UNITED STATES

SECURITIES & EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Special Situations Fund LP

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
PN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Special Situations Overseas Master Fund Ltd.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
Cayman Islands, British West Indies

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
CO

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Special Situations Overseas Benefit Plan Fund Ltd.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
Cayman Islands, British West Indies

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
CO

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Credit Opportunities Fund (Helios), L.P.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
Cayman Islands, British West Indies

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
PN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Capital Partners LP

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IA; PN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Bennett J. Goodman

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
J. Albert Smith III

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Douglas I. Ostrover

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
GSO Advisor Holdings L.L.C.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
OO

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Blackstone Holdings I L.P.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
PN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Blackstone Holdings I/II GP Inc.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
CO

CUSIP No. 00766T100

(1)

Names of Reporting Persons
The Blackstone Group L.P.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
PN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Blackstone Group Management L.L.C.

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
State of Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
OO

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Stephen A. Schwarzman

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IN

CUSIP No. 00766T100

(1)

Names of Reporting Persons
Peter G. Peterson

(2)

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

(3)

SEC Use Only

(4)

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

(5)

Sole Voting Power
-0-

(6)

Shared Voting Power
-0-

(7)

Sole Dispositive Power
-0-

(8)

Shared Dispositive Power
-0-

(9)

Aggregate Amount Beneficially Owned by Each Reporting Person
-0-

(10)

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

(11)

Percent of Class Represented by Amount in Row (9)
0%

(12)

Type of Reporting Person (See Instructions)
IN

CUSIP No. 00766T100

Item 1.

(a)

Name of Issuer:
Aecom Technology Corporation (the “Company”)

(b)

Address of Issuer’s Principal Executive Offices:
555 South Flower Street, Suite 3700

Los Angeles, California 90071

Item 2.

Item 2(a).

Name of Person Filing

Item 2(b).

Address of Principal Business Office

Item 2(c).

Citizenship
GSO SPECIAL SITUATIONS FUND LP

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  State of Delaware

GSO SPECIAL SITUATIONS OVERSEAS FUND LTD.

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  Cayman Islands, British West Indies

GSO SPECIAL SITUATIONS OVERSEAS BENEFIT PLAN FUND LTD.

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  Cayman Islands, British West Indies

GSO CREDIT OPPORTUNITIES FUND (HELIOS), L.P.

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  Cayman Islands, British West Indies

CUSIP No. 00766T100

GSO CAPITAL PARTNERS LP

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  State of Delaware

BENNETT J. GOODMAN

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  United States

J. ALBERT SMITH III

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  United States

DOUGLAS I. OSTROVER

c/o GSO Capital Partners LP

280 Park Avenue, 11th Floor

New York, NY 10017

Citizenship:  United States

GSO ADVISOR HOLDINGS. L.L.C.

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  State of Delaware

BLACKSTONE HOLDINGS I L.P.

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  State of Delaware

BLACKSTONE HOLDINGS I/II GP INC.

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  State of Delaware

THE BLACKSTONE GROUP L.P.

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  State of Delaware

CUSIP No. 00766T100

BLACKSTONE GROUP MANAGEMENT L.L.C.

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  State of Delaware

STEPHEN A. SCHWARZMAN

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  United States

PETER G. PETERSON

c/o The Blackstone Group

345 Park Avenue

New York, NY 10154

Citizenship:  United States

The foregoing persons are hereinafter sometimes collectively referred to as the “Reporting Persons.” Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.

Stephen A. Schwarzman and Peter G. Peterson were controlling shareholders of Blackstone Group Management L.L.C. and in that capacity, directed its operations.  Blackstone Group Management L.L.C. was the general partner of The Blackstone Group L.P., and in that capacity directed its operations.  The Blackstone Group L.P. was the controlling shareholder of Blackstone Holdings I/II GP Inc., and in that capacity, directed its operations.  Blackstone Holdings I/II GP Inc. was the general partner of Blackstone Holdings I L.P., and in that capacity, directed its operations.  Blackstone Holdings I L.P. was the sole member of GSO Advisor Holdings L.L.C., and in that capacity, directed its operations.  GSO Advisor Holdings L.L.C. was the general partner of GSO Capital Partners LP, and in that capacity directed its operations.  GSO Capital Partners LP was the investment manager of each of GSO Special Situations Fund LP, GSO Special Situations Overseas Master Fund Ltd., GSO Special Situations Overseas Benefit Plan Fund Ltd. and GSO Credit Opportunities Fund (Helios), L.P., and in that respect held discretionary investment authority for each of them. In addition, each of Bennett J. Goodman, J. Albert Smith III and Douglas I. Ostrover may have had shared voting and dispositive power with respect to previously reported shares of Common Stock (as defined below).

Item 2(d).

Title of Class of Securities:
Common Stock, $0.01 par value per share (the “Common Stock”)

Item 2(e).

CUSIP Number:
00766T100

CUSIP No. 00766T100

Item 3.

If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under Section 15 of the Act,

(b)

o

Bank as defined in Section 3(a)(6) of the Act,

(c)

o

Insurance Company as defined in Section 3(a)(19) of the Act,

(d)

o

Investment Company registered under Section 8 of the Investment Company Act of 1940,

(e)

o

Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E),

(f)

o

Employee Benefit Plan or Endowment Fund in accordance with 13d-1 (b)(1)(ii)(F),

(g)

o

Parent Holding Company or control person in accordance with Rule 13d-1 (b)(1)(ii)(G),

(h)

o

Savings Association as defined in Section 3(b) of the Federal Deposit Insurance Act,

(i)

o

Church Plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940,

(j)

o

Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.

Ownership.

(a)

Amount beneficially owned:   

As of the date of this filing, none of the Reporting Persons beneficially own any shares of Common Stock of the Company.

(b)

Percent of class:   

0%

(c)

Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote   

0

(ii)

Shared power to vote or to direct the vote    

0

CUSIP No. 00766T100

(iii)

Sole power to dispose or to direct the disposition of   

0

(iv)

Shared power to dispose or to direct the disposition of   

0

Item 5.

Ownership of Five Percent or Less of a Class

As of the date hereof, none of the Reporting Persons beneficially owns any shares of Common Stock of the Company and each has ceased to be a Reporting Person with respect to the shares of Common Stock of the Company:  x

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

Not Applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not Applicable.

Item 8.

Identification and Classification of Members of the Group.

See Item 2(a), 2(b), 2(c).

Item 9.

Notice of Dissolution of Group.

Not Applicable.

Item 10.

Certification.

Each of the Reporting Persons hereby makes the following certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

CUSIP No. 00766T100

GSO SPECIAL SITUATIONS FUND LP

GSO SPECIAL SITUATIONS OVERSEAS
FUND LP

By:

GSO Capital Partners LP

its Investment Manager

By:

GSO Capital Partners LP

its Investment Manager

By:

/s/ George Fan

By:

/s/ George Fan

Name:

George Fan

Title:

Chief Legal Officer/Chief Compliance

Name:

George Fan

Officer

Title:

Chief Legal Officer/Chief Compliance

Officer

GSO SPECIAL SITUATIONS OVERSEAS
BENEFIT PLAN FUND LTD.

GSO CREDIT OPPORTUNITIES FUND
(HELIOS), L.P.

By:

GSO Capital Partners LP

By:

GSO Capital Partners LP

its Investment Manager

its Investment Manager

By:

/s/ George Fan

By:

/s/ George Fan

Name:

George Fan

Name:

George Fan

Title:

Chief Legal Officer/Chief Compliance

Title:

Chief Legal Officer/Chief Compliance

Officer

Officer

GSO CAPITAL PARTNERS LP

GSO ADVISOR HOLDINGS I L.P.

By:

/s/ George Fan

By:

/s/ Robert L Friedman

Name:

George Fan

Name:

Robert L. Friedman

Title:

Chief Legal Officer/Chief Compliance

Title:

Authorized Person

Officer

CUSIP No. 00766T100

BLACKSTONE HOLDINGS I/II GP INC.

BLACKSTONE GROUP MANAGEMENT
L.L.C.

By:

/s/ Robert L. Friedman

By:

/s/ Robert L. Friedman

Name:

Robert L. Friedman

Title:

Authorized Person

Name:

Robert L. Friedman

Title:

Authorized Person

THE BLACKSTONE GROUP L.P.

BLACKSTONE HOLDINGS I L.P.

By:

/s/ Robert L. Friedman

By:

/s/ Robert L. Friedman

Name:

Robert L. Friedman

Name:

Robert L. Friedman

Title:

Authorized Person

Title:

Attorney-in-Fact

/s/ Stephen A. Schwarzman

/s/ Peter G. Peterson

STEPHEN A. SCHWARZMAN

PETER G. PETERSON

BENNETT J. GOODMAN

J. ALBERT SMITH III

By:

/s/ George Fan

By:

/s/ George Fan

Name:

George Fan

Name:

George Fan

Title:

Attorney-in-Fact

Title:

Attorney-in-Fact

DOUGLAS I. OSTROVER

By:

/s/ George Fan

Name:

George Fan

Title:

Attorney-in-Fact