Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust
   2. Issuer Name and Ticker or Trading Symbol
ARMSTRONG WORLD INDUSTRIES INC [AWI] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
818 N. WASHINGTON ST.		 3. Date of Earliest Transaction (Month/Day/Year)
08/10/2009
(Street)

WILMINGTON, DE 19801		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/10/2009   S   7,000,000 D $ 22.31 29,981,480 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Forward Sale Contract (obligation to sell) (1) (2) (3) (1) 08/10/2009   J(1)   1,039,777     (1)   (1) Common Stock 1,039,777 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust
818 N. WASHINGTON ST.
WILMINGTON, DE 19801		     X    

Signatures

 /s/Edward E. Steiner, attorney-in-fact for Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust   08/11/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) On August 10, 2009, the reporting person entered into a prepaid variable forward sale contract with TPG Partners V, L.P. and TPG Partners VI, L.P. (collectively, "TPG"). The contract obligates the reporting person to deliver to TPG 1,039,777 shares of AWI common stock (or cash as provided in the contract) on the maturity date of the contract. The maturity date is the 20th trading day beginning on November 4, 2013. In exchange for assuming this obligation, the reporting person will receive $23,197,425 at closing of the contract.
(2) The reporting person pledged 1,039,777 shares of AWI common stock (the "Pledged Shares") to secure its obligations under the contract. While the reporting person retained dividend and voting rights in the Pledged shares during the term of the pledge, the reporting person is obligated to pay TPG dividends received on such shares and is party to a shareholders agreement with TPG relating to such shares.
(3) The settlement price will be based on the 20 day AWI common stock price preceding the settlement transaction date, and the contract can be settled in cash or in the release of sufficient Pledge Shares to satisfy the settlement payment (as determined at the settlement price).

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