B727 crew experiences fire warning on #2 engine during departure and returns to field.

Attributes
ACN	716341
Time
Date	200610
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 4500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : zzz.tracon tower : rsw.tower
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 48 flight time total : 6200 flight time type : 480
ASRS Report	716341
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

#2 engine fire occurred during departure. Takeoff used maximum power. Normal departure until passing 4500 ft MSL when #2 engine fire indications were observed. Fire indications went out when fire handle was pulled. Declared emergency with center. Returned to ZZZ uneventfully. Callback conversation with reporter revealed the following information: the reporter states that mechanics discovered a bleed air duct clamp that was not properly installed. This error allowed a leak which activated the fire warning system.

Original NASA ASRS Text

Title: B727 CREW EXPERIENCES FIRE WARNING ON #2 ENG DURING DEP AND RETURNS TO FIELD.

Narrative: #2 ENG FIRE OCCURRED DURING DEP. TKOF USED MAX PWR. NORMAL DEP UNTIL PASSING 4500 FT MSL WHEN #2 ENG FIRE INDICATIONS WERE OBSERVED. FIRE INDICATIONS WENT OUT WHEN FIRE HANDLE WAS PULLED. DECLARED EMER WITH CTR. RETURNED TO ZZZ UNEVENTFULLY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATES THAT MECHS DISCOVERED A BLEED AIR DUCT CLAMP THAT WAS NOT PROPERLY INSTALLED. THIS ERROR ALLOWED A LEAK WHICH ACTIVATED THE FIRE WARNING SYS.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.