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SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
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1. Name and Address of Reporting Person*
CROWN CASTLE INTERNATIONAL CORP
(Last) (First) (Middle)
510 BERING DRIVE, SUITE 600
(Street)
HOUSTON TX 77057
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
08/29/2006 		3. Issuer Name and Ticker or Trading Symbol
FIRST AVENUE NETWORKS INC [ FRNS ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 26,352,956(1) I By Crown Castle Investment Corp.(2)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
CROWN CASTLE INTERNATIONAL CORP
(Last) (First) (Middle)
510 BERING DRIVE, SUITE 600
(Street)
HOUSTON TX 77057
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Crown Castle Investment Corp
(Last) (First) (Middle)
510 BERING DRIVE SUITE 600
(Street)
HOUSTON TX 77507
(City) (State) (Zip)
Explanation of Responses:
1. Received in exchange for 86,671,908 shares of FiberTower Network Services Corp. (FNS) common stock in connection with the merger of FNS into the Issuer (the Merger). Upon the effectiveness of the Merger, each share of FNS common stock converted into 0.3040542 share of Issuers common stock.
2. Crown Castle Investment Corp. directly beneficially owns the reported securities. Crown Castle International Corp. (CCIC) is the sole stockholder of Crown Castle Investment Corp. and as such may be deemed to be an indirect beneficial owner of the reported securities. Except to the extent of any indirect pecuniary interest therein, CCIC disclaims beneficial ownership of the securities beneficially owned by Crown Castle Investment Corp.
Remarks:
Exhibit list- Exhibit 99-Joint Filer Information
/s/ John Patrick Kelly, President & CEO 09/01/2006
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
Exhibit 99

FORM 3 JOINT FILER INFORMATION


Name:				Crown Castle Investment Corp.

Address:			510 Bering Drive, Suite 600
				Houston, TX 77057

Designated Filer:		Crown Castle International Corp.

Issuer & Ticker Symbol:	FiberTower Corporation (FTWR)

Date of Event
Requiring Statement:		8/29/06

						Crown Castle Investment Corp.

       Signature:			By:	J. Patrick Kelly, President & CEO