IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

External Parties

Table of Contents

Page

Seller

1. Certificate Payment Report

IndyMac Bank

2. Collection Account Report

3. Credit Enhancement Report

Servicer(s)

4. Collateral Report

IndyMac Bank, F.S.B.

5. Delinquency Report

6. REO Report

Underwriter(s)

7. Foreclosure Report

Merrill Lynch

8. Prepayment Report

Pierce

9. Prepayment Detail Report

Fenner & Smith Inc

10. Realized Loss Report

11. Realized Loss Detail Report

12. Triggers and Adj. Cert. Report

13. Other Related Information

Total Number of Pages

Dates

Contacts

Cut-Off Date:

May 01, 2007

Jennifer Hermansader

Close Date:

May 30, 2007

Administrator

First Distribution Date:

June 25, 2007

(714) 247-6258

Jennifer.Vandyne@db.com

Address:

Distribution Date:

November 26, 2007

1761 East St. Andrew Place, Santa Ana, CA 92705

Record Date:

October 31, 2007

Factor Information:

(800) 735-7777

Main Phone Number:

(714) 247-6000

Determination Date:

November 15, 2007

https://tss.sfs.db.com/investpublic

Page 1 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Certificate Payment Report
Current Period Distribution -
			Prior						Current
			Prior

	Class	Original	Principal			Total	Realized	Deferred	Principal

Class	Type	Face Value	Balance	Interest	Principal	Distribution	Loss	Interest	Balance
			(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
1-A-1	INT	161,842,000.00	146,476,592.85	727,960.26	260,852.91	988,813.17	0.00	0.00	146,215,739.94
1-A-1	INT	161,842,000.00	146,476,592.85	727,960.26	260,852.91	988,813.17	0.00	0.00	146,215,739.94
1-A-2	INT	17,981,900.00	16,274,684.22	80,882.02	28,982.78	109,864.80	0.00	0.00	16,245,701.44
2-A-1	INT	45,331,000.00	40,201,026.26	199,203.42	15,994.18	215,197.60	0.00	0.00	40,185,032.08
2-A-2	INT	5,037,000.00	4,466,977.79	22,134.69	1,777.21	23,911.90	0.00	0.00	4,465,200.58
3-A-1	INT	72,787,000.00	68,884,733.80	348,268.23	291,023.01	639,291.24	0.00	0.00	68,593,710.79
B-1	INT	6,238,000.00	6,207,779.19	30,962.65	208.07	31,170.72	0.00	0.00	6,207,571.12
B-2	INT	3,999,000.00	3,979,626.33	19,849.25	133.39	19,982.64	0.00	0.00	3,979,492.94
B-3	INT	2,559,000.00	2,546,602.58	12,701.73	85.36	12,787.09	0.00	0.00	2,546,517.22
B-4	INT	2,879,000.00	2,865,052.30	14,290.07	96.03	14,386.10	0.00	0.00	2,864,956.27
B-5	INT	799,000.00	795,129.13	3,965.88	26.65	3,992.53	0.00	0.00	795,102.48
B-6	INT	484,432.00	482,085.11	2,404.50	16.16	2,420.66	0.00	0.00	482,068.95
P	INT	100.00	100.00	0.00	0.00	0.00	0.00	0.00	100.00
L	INT	0.00	0.00	954.71	0.00	954.71	0.00	0.00	0.00
A-R	RES_EXE	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00


Total		319,937,532.00	293,180,389.56	1,463,577.41	599,195.75	2,062,773.16	0.00	0.00	292,581,193.81
Total




Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face Value
					Orig. Principal	Prior				Current
					Orig. Principal	Prior				Current
	Period	Period			(with Notional)	Principal			Total	Principal
Class	Starting	Ending	Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
			Method
					(1)	(1)	(2)	(3)	(4)=(2)+(3)	(5)

1-A-1	10/01/07	10/30/07	A-30/360	456673AA0	161,842,000.00	905.059211	4.497969	1.611775	6.109744	903.447436
1-A-1	10/01/07	10/30/07	A-30/360	456673AA0	161,842,000.00	905.059211	4.497969	1.611775	6.109744	903.447436
1-A-2	10/01/07	10/30/07	A-30/360	456673AB8	17,981,900.00	905.059211	4.497969	1.611775	6.109744	903.447435
2-A-1	10/01/07	10/30/07	A-30/360	456673AC6	45,331,000.00	886.832990	4.394419	0.352831	4.747250	886.480159
2-A-2	10/01/07	10/30/07	A-30/360	456673AD4	5,037,000.00	886.832994	4.394419	0.352831	4.747250	886.480163
3-A-1	10/01/07	10/30/07	A-30/360	456673AE2	72,787,000.00	946.387869	4.784759	3.998283	8.783041	942.389586
B-1	10/01/07	10/30/07	A-30/360	456673AF9	6,238,000.00	995.155369	4.963554	0.033355	4.996909	995.122013
B-2	10/01/07	10/30/07	A-30/360	456673AG7	3,999,000.00	995.155371	4.963553	0.033356	4.996909	995.122016
B-3	10/01/07	10/30/07	A-30/360	456673AH5	2,559,000.00	995.155365	4.963552	0.033357	4.996909	995.122009
B-4	10/01/07	10/30/07	A-30/360	456673AJ1	2,879,000.00	995.155366	4.963553	0.033355	4.996909	995.122011
B-5	10/01/07	10/30/07	A-30/360	456673AK8	799,000.00	995.155357	4.963554	0.033354	4.996909	995.122003
B-6	10/01/07	10/30/07	A-30/360	456673AL6	484,432.00	995.155378	4.963545	0.033359	4.996904	995.122019
P	10/01/07	10/30/07	A-30/360	456673AN2	100.00	1,000.000000	0.000000	0.000000	0.000000	1,000.000000
L	10/01/07	10/30/07	A-30/360	456673AP7	0.00	0.000000	0.000000	0.000000	0.000000	0.000000
A-R	10/01/07	10/30/07	A-30/360	456673AM4	100.00	0.000000	0.000000	0.000000	0.000000	0.000000




Page 2 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


Distribution to Date -
									Current


	Original		Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal

Class	Face Value	Interest	Principal	Principal	Principal	Distribution	Loss	Interest	Balance
(1)	(2)	(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
1-A-1	161,842,000.00	4,534,354.45	15,602,747.52	23,512.54	15,626,260.06	20,160,614.51	0.00	0.00	146,215,739.94
1-A-2	17,981,900.00	503,801.90	1,733,586.13	2,612.43	1,736,198.56	2,240,000.46	0.00	0.00	16,245,701.44
2-A-1	45,331,000.00	1,275,387.75	5,135,109.63	10,858.29	5,145,967.92	6,421,355.67	0.00	0.00	40,185,032.08
2-A-2	5,037,000.00	141,716.01	570,592.90	1,206.53	571,799.42	713,515.43	0.00	0.00	4,465,200.58
3-A-1	72,787,000.00	2,139,550.61	2,756,416.55	1,436,872.44	4,193,289.21	6,332,839.82	0.00	0.00	68,593,710.79
B-1	6,238,000.00	186,204.57	0.00	30,428.88	30,428.88	216,633.45	0.00	0.00	6,207,571.12
B-2	3,999,000.00	119,370.32	0.00	19,507.06	19,507.06	138,877.38	0.00	0.00	3,979,492.94
B-3	2,559,000.00	76,386.25	0.00	12,482.78	12,482.78	88,869.03	0.00	0.00	2,546,517.22
B-4	2,879,000.00	85,938.27	0.00	14,043.73	14,043.73	99,982.00	0.00	0.00	2,864,956.27
B-5	799,000.00	23,850.17	0.00	3,897.52	3,897.52	27,747.69	0.00	0.00	795,102.48
B-6	484,432.00	14,460.30	0.00	2,363.05	2,363.05	16,823.35	0.00	0.00	482,068.95
P	100.00	11,328.00	0.00	0.00	0.00	11,328.00	0.00	0.00	100.00
L	0.00	2,552.87	0.00	0.00	0.00	2,552.87	0.00	0.00	0.00
A-R	100.00	0.50	0.00	0.00	100.00	100.50	0.00	0.00	0.00


Total	319,937,532.00	9,114,901.97	25,798,452.73	1,557,785.25	27,356,338.19	36,471,240.16	0.00	0.00	292,581,193.81


Interest Detail -
	Pass	Prior Principal		Non-	Prior	Unscheduled		Paid or	Current
	Pass	Prior Principal		Non-	Prior	Unscheduled		Paid or

	Through	(with Notional)	Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid

Class	Rate	Balance	Interest	Interest SF	Interest	Adjustment	Interest	Interest	Interest
			(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
1-A-1	5.96377%	146,476,592.85	727,960.26	0.00	0.00	0.00	727,960.26	727,960.26	0.00
1-A-2	5.96377%	16,274,684.22	80,882.02	0.00	0.00	0.00	80,882.02	80,882.02	0.00
2-A-1	5.94622%	40,201,026.26	199,203.42	0.00	0.00	0.00	199,203.42	199,203.42	0.00
2-A-2	5.94622%	4,466,977.79	22,134.69	0.00	0.00	0.00	22,134.69	22,134.69	0.00
3-A-1	6.06697%	68,884,733.80	348,268.23	0.00	0.00	0.00	348,268.23	348,268.23	0.00
B-1	5.98526%	6,207,779.19	30,962.65	0.00	0.00	0.00	30,962.65	30,962.65	0.00
B-2	5.98526%	3,979,626.33	19,849.25	0.00	0.00	0.00	19,849.25	19,849.25	0.00
B-3	5.98526%	2,546,602.58	12,701.73	0.00	0.00	0.00	12,701.73	12,701.73	0.00
B-4	5.98526%	2,865,052.30	14,290.07	0.00	0.00	0.00	14,290.07	14,290.07	0.00
B-5	5.98526%	795,129.13	3,965.88	0.00	0.00	0.00	3,965.88	3,965.88	0.00
B-6	5.98526%	482,085.11	2,404.50	0.00	0.00	0.00	2,404.50	2,404.50	0.00
P	0.00000%	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
L	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	954.71	0.00
A-R	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00


Total		293,180,389.56	1,462,622.70	0.00	0.00	0.00	1,462,622.70	1,463,577.41	0.00



Page 3 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Collection Account Report
SUMMARY

	Group 3	Group 2	Group 1	Total
Principal Collections	291,188.96	17,899.61	290,107.18	599,195.75
Principal Withdrawals	0.00	0.00	0.00	0.00
Principal Other Accounts	0.00	0.00	0.00	0.00
TOTAL NET PRINCIPAL	291,188.96	17,899.61	290,107.18	599,195.75
Interest Collections	383,197.29	244,832.13	892,033.14	1,520,062.56
Interest Withdrawals	-0.00	-0.00	-0.00	-0.00
Interest Other Accounts	28.22	0.00	926.49	954.71
Interest Fees	-14,736.18	-9,524.32	-33,179.35	-57,439.85
TOTAL NET INTEREST	368,489.33	235,307.81	859,780.28	1,463,577.42
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION	659,678.29	253,207.42	1,149,887.46	2,062,773.17




PRINCIPAL - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Principal Received	3,028.18	2,159.72	4,662.26	9,850.16
Curtailments	288,160.78	15,739.89	285,444.92	589,345.59
Prepayments In Full	0.00	0.00	0.00	0.00
Repurchased/Substitutions	0.00	0.00	0.00	0.00
Liquidations	0.00	0.00	0.00	0.00
Insurance Principal	0.00	0.00	0.00	0.00
Other Additional Principal	0.00	0.00	0.00	0.00
Delinquent Principal	-0.00	-0.00	-647.74	-647.74
Realized Losses	-0.00	-0.00	-0.00	-0.00
Advanced Principal	0.00	0.00	647.74	647.74
TOTAL PRINCIPAL COLLECTED	291,188.96	17,899.61	290,107.18	599,195.75




PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK




PRINCIPAL - OTHER ACCOUNTS

	Group 3	Group 2	Group 1	Total
TOTAL PRINCIPAL OTHER ACCOUNTS	0.00	0.00	0.00	0.00






Page 4 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


INTEREST - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Interest	384,160.40	245,537.35	896,080.89	1,525,778.64
Repurchased/Substitution Interest	0.00	0.00	0.00	0.00
Liquidation Interest	0.00	0.00	0.00	0.00
Insurance Interest	0.00	0.00	0.00	0.00
Other Additional Interest	0.00	0.00	0.00	0.00
Prepayment Interest Shortfalls	-0.00	-0.00	-0.00	-0.00
Delinquent Interest	-24,083.97	-17,580.10	-101,241.71	-142,905.78
Compensating Interest	0.00	0.00	0.00	0.00
Civil Relief Act Shortfalls	-0.00	-0.00	-0.00	-0.00
Interest Advanced	23,120.85	16,874.89	97,193.97	137,189.71
Interest Realized Loss	-0.00	-0.00	-0.00	-0.00
TOTAL INTEREST COLLECTED	383,197.29	244,832.13	892,033.14	1,520,062.56




INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK




INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
	Group 3	Group 2	Group 1	Total

Late payment charges.	28.22	0.00	926.49	954.71
Prepayment charges.	0.00	0.00	0.00	0.00
TOTAL INTEREST OTHER ACCOUNTS	28.22	0.00	926.49	954.71


Late payment charges Waived.	0.00	0.00	0.00	0.00




INTEREST FEES
INTEREST FEES
	Group 3	Group 2	Group 1	Total
Current Servicing Fees	14,219.95	9,187.96	31,955.25	55,363.16
Trustee Fees	516.22	336.37	1,224.10	2,076.69
TOTAL INTEREST FEES	14,736.18	9,524.32	33,179.35	57,439.85



Page 5 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Credit Enhancement Report

ACCOUNTS

Distribution Account

Beginning Account Balance

0.00

Amount Deposited

2,064,850.02

Amount Withdrawn

2,064,850.02

Ending Account Balance

0.00

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 6 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Collateral Report


COLLATERAL



		Group 3	Group 2	Group 1	Total



Loan Count:
Loan Count:


Original	101	70	253	424
Prior	97	66	235	398
Prefunding	0	0	0	0
Scheduled Paid Offs	-0	-0	-0	-0
Full Voluntary Prepayments	-0	-0	-0	-0
Repurchases	-0	-0	-0	-0
Liquidations	-0	-0	-0	-0
Current	97	66	235	398
Principal Balance:


Original	76,861,273.48	53,187,798.50	189,888,359.80	319,937,431.78
Prior	72,878,729.21	47,487,212.66	172,814,347.70	293,180,289.57
Prefunding	0.00	0.00	0.00	0.00
Scheduled Principal	-3,028.18	-2,159.72	-4,662.26	-9,850.16
Partial Prepayments	-288,160.78	-15,739.89	-285,444.92	-589,345.59
Full Voluntary Prepayments	-0.00	-0.00	-0.00	-0.00
Repurchases	-0.00	-0.00	-0.00	-0.00
Liquidations	-0.00	-0.00	-0.00	-0.00
Current	72,587,540.25	47,469,313.05	172,524,240.52	292,581,093.82


Aggregate number and outstanding Stated Principal
of Mortgage Loans repurchased during the related
Due Period due to material breaches of representations
and warranties regarding such Mortgage Loans*

* Information not available with Trustee





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 7 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution



CHARACTERISTICS
CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Coupon Original	6.33034%	6.23805%	6.24432%	6.26394%
Weighted Average Coupon Prior	6.32535%	6.20549%	6.22228%	6.24518%
Weighted Average Coupon Current	6.32547%	6.20472%	6.22227%	6.24508%
Weighted Average Months to Maturity Original	359	358	359	359
Weighted Average Months to Maturity Prior	354	354	355	355
Weighted Average Months to Maturity Current	352	353	353	353
Weighted Avg Remaining Amortization Term Original	362	358	359	360
Weighted Avg Remaining Amortization Term Prior	358	354	355	356
Weighted Avg Remaining Amortization Term Current	356	353	354	354
Weighted Average Seasoning Original	1.40	1.79	1.34	1.43
Weighted Average Seasoning Prior	5.38	5.69	5.33	5.40
Weighted Average Seasoning Current	6.38	6.69	6.33	6.40

Page 8 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution



ARM CHARACTERISTICS
ARM CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Margin Original	2.68653%	2.74295%	2.73892%	2.72700%
Weighted Average Margin Prior	2.68347%	2.74213%	2.73783%	2.72502%
Weighted Average Margin Current	2.68352%	2.74212%	2.73783%	2.72503%
Weighted Average Max Rate Original	11.33034%	11.23805%	11.24432%	11.26394%
Weighted Average Max Rate Prior	11.32535%	11.20549%	11.22228%	11.24518%
Weighted Average Max Rate Current	11.32547%	11.20472%	11.22227%	11.24508%
Weighted Average Min Rate Original	6.33034%	6.23805%	6.24432%	6.26394%
Weighted Average Min Rate Prior	6.32535%	6.20549%	6.22228%	6.24518%
Weighted Average Min Rate Current	6.32547%	6.20472%	6.22227%	6.24508%
Weighted Average Cap Up Original	2.00000%	2.00000%	2.00000%	2.00000%
Weighted Average Cap Up Prior	2.00000%	2.00000%	2.00000%	2.00000%
Weighted Average Cap Up Current	2.00000%	2.00000%	2.00000%	2.00000%
Weighted Average Cap Down Original	2.00000%	2.00000%	2.00000%	2.00000%
Weighted Average Cap Down Prior	2.00000%	2.00000%	2.00000%	2.00000%
Weighted Average Cap Down Current	2.00000%	2.00000%	2.00000%	2.00000%





Page 9 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

	Group 3	Group 2	Group 1	Total




Current Servicing Fees	14,219.95	9,187.96	31,955.25	55,363.16
Delinquent Servicing Fees	963.12	705.21	4,047.74	5,716.07
TOTAL SERVICING FEES	15,183.07	9,893.17	36,002.99	61,079.23


Total Servicing Fees	15,183.07	9,893.17	36,002.99	61,079.23
Compensating Interest	-0.00	-0.00	-0.00	-0.00
Delinquent Servicing Fees	-963.12	-705.21	-4,047.74	-5,716.07
COLLECTED SERVICING FEES	14,219.95	9,187.96	31,955.25	55,363.16


Total Advanced Interest	23,120.85	16,874.89	97,193.97	137,189.71
Total Advanced Principal	0.00	0.00	647.74	647.74
Aggregate Advances with respect to this Distribution	23,120.85	16,874.89	97,841.71	137,837.45
Aggregate Advances Outstanding on the close of distribution*

Any additional servicing compensation received by the
Servicer attributable to penalties, fees, Excess Proceeds
or other similar charges or fees and items. *

The aggregate amount of Advances reimbursed
during the related Due Period. *
The general source of funds for such reimbursements. *
The aggregate amount of Advances outstanding as
of the close of business on the Distribution Date. *


The aggregate amount of Servicing Advances
reimbursed during the related Due Period. *
The general source of funds for such reimbursements. *
The aggregate amount of Servicing Advances outstanding
as of the close of business on the Distribution Date. *

* Information not available with Trustee




ADDITIONAL COLLATERAL INFORMATION
ADDITIONAL COLLATERAL INFORMATION
	Group 3	Group 2	Group 1	Total
Prepayment Interest Shortfall (PPIS)	0.00	0.00	0.00	0.00
Compensating Interest	0.00	0.00	0.00	0.00
Net Prepayment Interest Shortfall (PPIS)	0.00	0.00	0.00	0.00

Weighted Average Net Mortgage Rate	6.066974%	5.946219%	5.963767%	5.986580%

The number and aggregate balance of any
Delayed Delivery Mortgage Loans not delivered
within the time periods specified in the
definition of Delayed Delivery Mortgage Loans. *

* Information not available with Trustee




Page 10 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Delinquency Report

TOTAL
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		2,846,000.00	3,644,772.43	464,000.00	6,954,772.43
	% Balance		0.97%	1.25%	0.16%	2.38%
	# Loans		4	3	1	8
	% # Loans		1.01%	0.75%	0.25%	2.01%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	2,846,000.00	3,644,772.43	464,000.00	6,954,772.43
	% Balance	0.00%	0.97%	1.25%	0.16%	2.38%
	# Loans	0	4	3	1	8
	% # Loans	0.00%	1.01%	0.75%	0.25%	2.01%

Page 11 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 1
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		2,846,000.00	3,644,772.43	464,000.00	6,954,772.43
	% Balance		1.65%	2.11%	0.27%	4.03%
	# Loans		4	3	1	8
	% # Loans		1.70%	1.28%	0.43%	3.40%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	2,846,000.00	3,644,772.43	464,000.00	6,954,772.43
	% Balance	0.00%	1.65%	2.11%	0.27%	4.03%
	# Loans	0	4	3	1	8
	% # Loans	0.00%	1.70%	1.28%	0.43%	3.40%

Page 12 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 2
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		0.00	0.00	0.00	0.00
	% Balance		0.00%	0.00%	0.00%	0.00%
	# Loans		0	0	0	0
	% # Loans		0.00%	0.00%	0.00%	0.00%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%

Page 13 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 3
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		0.00	0.00	0.00	0.00
	% Balance		0.00%	0.00%	0.00%	0.00%
	# Loans		0	0	0	0
	% # Loans		0.00%	0.00%	0.00%	0.00%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%

Page 14 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

REO Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

Page 15 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Foreclosure Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

Page 16 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

		Group 3	Group 2	Group 1	Total


Current


Number of Paid in Full Loans	0	0	0	0
Number of Repurchased Loans	0	0	0	0
Total Number of Loans Prepaid in Full	0	0	0	0
Curtailments Amount	288,160.78	15,739.89	285,444.92	589,345.59
Paid in Full Balance	0.00	0.00	0.00	0.00
Repurchased Loans Balance	0.00	0.00	0.00	0.00
Total Prepayment Amount	288,160.78	15,739.89	285,444.92	589,345.59
Cumulative


Number of Paid in Full Loans	3	4	18	25
Number of Repurchased Loans	1	0	0	1
Total Number of Loans Prepaid in Full	4	4	18	26
Paid in Full Balance	2,330,899.00	5,253,999.00	15,372,095.81	22,956,993.81
Repurchased Loans Balance	1,500,000.00	0.00	0.00	1,500,000.00
Curtailments Amount	425,517.55	451,703.53	1,964,337.77	2,841,558.85
Total Prepayment Amount	4,256,416.55	5,705,702.53	17,336,433.58	27,298,552.66

Page 17 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Including Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.40%	0.03%	0.17%	0.20%
3 Months Avg SMM	0.54%	0.77%	0.37%	0.48%
12 Months Avg SMM	0.95%	1.87%	1.58%	1.48%
Avg SMM Since Cut-off	0.95%	1.87%	1.58%	1.48%



CPR	4.64%	0.40%	1.96%	2.39%
3 Months Avg CPR	6.28%	8.85%	4.36%	5.58%
12 Months Avg CPR	10.77%	20.31%	17.43%	16.34%
Avg CPR Since Cut-off	10.77%	20.31%	17.43%	16.34%



PSA	363.95%	29.69%	155.26%	186.47%
3 Months Avg PSA Approximation	584.08%	778.01%	408.93%	517.02%
12 Months Avg PSA Approximation	1,386.14%	2,405.91%	2,273.91%	2,089.67%
Avg PSA Since Cut-off Approximation	1,386.15%	2,405.91%	2,273.92%	2,089.67%


(*) SMM, CPR, PSA Figures Include Liquidated Balances

Page 18 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

PREPAYMENT CALCULATION METHODOLOGY - Including Liquidated Balances

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidated Balances)/(Beg Principal Balance - Sched Principal)

Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)

PSA Standard Prepayment Model: CPR/(0.20%*min(30,WAS))

Average SMM over period between nth month and mth month (AvgSMMn,m): 1 - [(1-SMMn)*(1-SMMn+1)*...*(1-SMMm)]^(1/months in period n,m)

Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)

Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.20%*Avg WASn,m))

Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m)

Weighted Average Seasoning (WAS)

Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments and repurchases.

Dates correspond to distribution dates.

Page 19 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Excluding Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.40%	0.03%	0.17%	0.20%
3 Months Avg SMM	0.54%	0.77%	0.37%	0.48%
12 Months Avg SMM	0.95%	1.87%	1.58%	1.48%
Avg SMM Since Cut-off	0.95%	1.87%	1.58%	1.48%



CPR	4.64%	0.40%	1.96%	2.39%
3 Months Avg CPR	6.28%	8.85%	4.36%	5.58%
12 Months Avg CPR	10.77%	20.31%	17.43%	16.34%
Avg CPR Since Cut-off	10.77%	20.31%	17.43%	16.34%



PSA	363.95%	29.69%	155.26%	186.47%
3 Months Avg PSA Approximation	584.08%	778.01%	408.93%	517.02%
12 Months Avg PSA Approximation	1,386.14%	2,405.91%	2,273.91%	2,089.67%
Avg PSA Since Cut-off Approximation	1,386.15%	2,405.91%	2,273.92%	2,089.67%

(*) SMM, CPR, PSA Figures Exclude Liquidated Balances
(*) SMM, CPR, PSA Figures Exclude Liquidated Balances

Page 20 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

PREPAYMENT CALCULATION METHODOLOGY - Excluding Liquidated Balances

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases)/(Beg Principal Balance - Sched Principal)

Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)

PSA Standard Prepayment Model: CPR/(0.20%*min(30,WAS))

Average SMM over period between nth month and mth month (AvgSMMn,m): 1 - [(1-SMMn)*(1-SMMn+1)*...*(1-SMMm)]^(1/months in period n,m)

Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)

Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.20%*Avg WASn,m))

Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m)

Weighted Average Seasoning (WAS)

Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments and repurchases.

Dates correspond to distribution dates.

Page 21 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Prepayment Detail Report

Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution

Loan Number

Original

Current

State &

Type Prepayment

First

Loan

Principal

Prepayment

Note

LTV at

Payment

Loan Group

Status

Balance

Amount

Date

Rate

Origination

Original Term

Date

SPACE INTENTIONALLY LEFT BLANK

TOTAL

Page 22 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Realized Loss Report

COLLATERAL REALIZED LOSSES


		Group 3	Group 2	Group 1	Total


Current





	Subsequent Recoveries		0.00	0.00	0.00	0.00

	Number of Loans Liquidated		0	0	0	0
	Collateral Principal Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
	Collateral Interest Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
Net Liquidation Proceeds		0.00	0.00	0.00	0.00
Cumulative




	Number of Loans Liquidated		0	0	0	0

	Collateral Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
	Net Liquidation Proceeds		0.00	0.00	0.00	0.00
Cumulative Subsequent Recoveries		0.00	0.00	0.00	0.00



	Special Hazard Loss Coverage Amt					5,326,703.26
	Fraud Loss Coverage Amt					3,199,374.32
	Bankruptcy Loss Coverage Amt					100,000.00

Page 23 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


DEFAULT SPEEDS
DEFAULT SPEEDS
	Group 3	Group 2	Group 1	Total




MDR	0.00%	0.00%	0.00%	0.00%
3 Months Avg MDR	0.00%	0.00%	0.00%	0.00%
12 Months Avg MDR	0.00%	0.00%	0.00%	0.00%
Avg MDR Since Cut-off	0.00%	0.00%	0.00%	0.00%


CDR	0.00%	0.00%	0.00%	0.00%
3 Months Avg CDR	0.00%	0.00%	0.00%	0.00%
12 Months Avg CDR	0.00%	0.00%	0.00%	0.00%
Avg CDR Since Cut-off	0.00%	0.00%	0.00%	0.00%


SDA	0.00%	0.00%	0.00%	0.00%
3 Months Avg SDA Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg SDA Approximation	0.00%	0.00%	0.00%	0.00%
Avg SDA Since Cut-off Approximation	0.00%	0.00%	0.00%	0.00%


Principal Only Loss Severity Approx for Current Period	0.00%	0.00%	0.00%	0.00%
3 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
Avg Loss Severity Approximation Since Cut-Off	0.00%	0.00%	0.00%	0.00%


Principal & Interest Loss Severity Approx for Current Period	0.00%	0.00%	0.00%	0.00%
3 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
Avg Loss Severity Approximation Since Cut-Off	0.00%	0.00%	0.00%	0.00%

Page 24 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY

Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)

Conditional Default Rate (CDR): 1-((1-MDR)^12)

SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)*0.02%,MAX(0.03%,MIN(30,WAS)*0.02%-0.0095%*(WAS-60)))

Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn)*(1-MDRn+1)*...*(1-MDRm)]^(1/months in period n,m)

Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)

Average SDA Approximation over period between the nth month and mth month:

AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)*0.02%,MAX(0.03%,MIN(30,Avg WASn,m)*0.02%-0.0095%*(Avg WASn,m-60)))

Average WASn,m: (WASn + WASn+1 +...+ WASm )/(number of months in the period n,m)

Principal Only Loss Severity Approximation for current period:

Sum(Principal Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

Principal & Interest Loss Severity Approximation for current period:

Sum(Principal & Interest Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

Average Loss Severity Approximation over period between nth month and mth month:

Sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans for months in the period n,m

Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.

Dates correspond to distribution dates.

All Realized Losses in excess of Principal Balance are treated as Interest Realized Losses.

Page 25 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Realized Loss Detail Report

Loan Number

Current

State &

Prior

Realized

Cumulative

Loan

Note

LTV at

Original

Principal

Loss/(Gain)

Realized

Loan Group

Status

Rate

Origination

Term

Balance

Revision

Loss/(Gain)

TOTAL

Page 26 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Triggers and Adj. Cert. Report

TRIGGER EVENTS

Group 3

Group 2

Group 1

Total

Has Optional Termination Date Reached ?

Has Sr. Credit Supp. Depletion Date Occured ?

Has Special Haz. Cov. Term Date Occured ?

Has Fraud Loss Coverage Term Date Occured ?

Has BK Loss Cov. Term Date Occured ?

Does an Event of Default Exist?

Senior Stepdown Date has occurred?

Sr.Stepdown Cond Satisfied?(1=Yes or 2=Yes)

1.Delinquency Trigger

Does Delinquency Trigger Event Exist (a > 50% of b)

(a) Rolling Six Month 60+ Delq Balance

1,075,111.48

(b) Aggregate Balance of Subordinate Certificates

16,875,708.98

2.Cumulative Loss Trigger

Does a Loss Trigger Event Exist (a > b)

(a) Cumulative Realized Loss

0.00

(b) Cumulative Loss Threshold (i)*(ii)

16,958,432.00

(i) Threshold Percentage

100.0000%

(ii) Cutoff Date Subordinate Principal Balance

16,958,432.00

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

ADDITIONAL INFORMATION

Group 3

Group 2

Group 1

Total

Senior Percentage

94.519669%

94.063226%

94.176947%

Subordinate Percentage

5.480331%

5.936774%

5.823053%

Senior Prepayment Percentage

100.000000%

Subordinate Prepayment Percentage

0.000000%

Subordinate Pass Through Rate

5.985261%

Page 27 of 28

IndyMac INDA Mortgage Loan Trust 2007-AR3



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Scheduled Payments	387,188.58	247,697.07	900,743.15	1,535,628.79
Current Scheduled Payments 1 Month Prior	387,365.02	248,164.46	900,870.54	1,536,400.02
Current Scheduled Payments 2 Month Prior	391,710.18	253,952.27	909,593.42	1,555,255.87
Current Scheduled Payments 3 Month Prior	400,076.60	274,671.23	933,961.68	1,608,709.51
Current Scheduled Payments 4 Month Prior	400,190.17	275,949.42	959,546.96	1,635,686.56
Current Scheduled Payments 5 Month Prior	400,290.15	278,589.39	992,708.53	1,671,588.08
Current Scheduled Payments 6 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 7 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 8 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 9 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 10 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 11 Month Prior	0.00	0.00	0.00	0.00


Sched. Payments for 60+Day Delinquent Loans	0.00	0.00	21,521.03	21,521.03
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior	0.00	0.00	2,465.00	2,465.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior	0.00	0.00	9,733.60	9,733.60
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior	0.00	0.00	0.00	0.00



Class B-1 Writedown Amount				0.00
Class B-2 Writedown Amount				0.00
Class B-3 Writedown Amount				0.00
Class B-4 Writedown Amount				0.00
Class B-5 Writedown Amount				0.00
Class B-6 Writedown Amount				0.00





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IndyMac INDA Mortgage Loan Trust 2007-AR3 10-D