UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D/A
(Amendment No. 6)
Under the Securities Exchange Act of 1934

BlackRock Investment Quality Municipal Income Trust (RFA)

(Name of Issuer)

Auction Rate Municipal Preferred Shares

(Title of Class of Securities)

09247B208

(CUSIP Number)

George W. Karpus, President
Karpus Management, Inc.,
d/b/a Karpus Investment Management
183 Sully's Trail
Pittsford, New York 14534
(585) 586-4680

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

November 30, 2011

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G
to report the acquisition that is the subject of this Schedule 13D,
and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or
240.13d-1(g), check the following box.

CUSIP No.: 09247B208

1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

Karpus Management, Inc., d/b/a Karpus Investment Management
I.D. #16-1290558

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)
(b) X

3. SEC Use Only

4. Source of Funds (See Instructions)

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

N/A

6. Citizenship or Place of Organization

New York

Number of Shares Beneficially Owned by Each reporting Person With:

7. Sole Voting Power

8. Shared Voting Power

9. Sole Dispositive Power

10. Shared Dispositive Power

11. Aggregate Amount Beneficially Owned by Each Reporting Person

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

N/A

13. Percent of Class Represented by Amount in Row (11)

32.24%*

14. Type of Reporting Person (See Instructions)

*Item 13, above, is calculated based on the aggregate amount of 183 outstanding auction rate preferred shares indicated by the Issuer's N-CSR filing, filed with the U.S. Securities and Exchange Commission on October 6, 2011, dated as of July 31, 2011.

The following constitutes Amendment No. 6 ("Amendment No. 6") to the Schedule 13D filed by the undersigned. This Amendment amends the original Schedule 13D as specifically set forth.

Item 3. Source and Amount of Funds or Other Considerations.

KIM, an independent investment advisor, has accumulated 59 shares of RFA Auction Rate Municipal Preferred Shares on behalf of accounts that are managed by KIM (the “Accounts”) under limited powers of attorney, which represents 32.24% of the outstanding shares. All funds that have been utilized in making such purchases are from such Accounts.

Item 4. Purpose of Transaction.

KIM has purchased Shares for the Accounts for investment purposes. However, KIM reserves the right to contact management with regard to concerns that they have with respect to the Fund. This may include letters to the Board and/or other communications with Fund management. Being an independent registered investment advisor, with a specialty focus in closed end funds, the profile of the RFA Auction Rate Municipal Preferred Shares fits the investment guidelines for various Accounts. Shares have been acquired since April 19, 2010.

Item 5. Interest in Securities of the Issuer.

(a) As of the date of this Report, KIM represents beneficial ownership of 59 shares or 32.24% of the outstanding shares. None of the principals of KIM presently own shares of RFA Auction Rate Municipal Preferred Shares.

(b) KIM has the sole power to dispose of and to vote all of such Shares under limited powers of attorney.

(c) Open market purchases for the last 60 days for the Accounts. There have been no dispositions and no acquisitions, other than by such open market purchases:



	Date	Shares	Price Per Share
	11/9/2011	8*


*- shares transferred out from KIM

The Accounts have the right to receive all dividends from, and any proceeds from the sale of the Shares. None of the Accounts has an interest in Shares constituting more than 5% of the Shares outstanding.

Item 6. Contracts, Arrangements, Understandings, or Relationships with Respect to Securities of the Issuer.

Pursuant to the Issuer's 8-K filing on June 16, 2011, Karpus and the Issuer entered an agreement on June 15, 2011 regarding all outstanding auction rate preferred securities. The terms of the June 15 agreement are outlined in the stated filing.

Item 7. Materials to be Filed as Exhibits.

None

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete, and correct.

Karpus Management, Inc.


By:  	/s/
Name:  	Sharon Thornton
Title:  	Senior Director of Investments
Date:  	December 9, 2011

BLACKROCK INVESTMENT QUALITY MUNICIPAL INCOME TRUST SC 13D/A