A B737-400 in climb at 8000 ft declared an emergency and diverted due to left engine overheat warning caused by a leaking high pressure bleed duct clamp.

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Attributes
ACN	503020
Time
Date	200103
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : tpa.airport
State Reference	FL
Altitude	msl single value : 8000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : tpa.tracon
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : initial
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 5000
ASRS Report	503020
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : #1 eng overheat light other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Engine overheat. Return to land. No other problems. Callback conversation with reporter revealed the following information: the reporter stated the overheat warning emergency was caused by a left engine high pressure bleed duct clamp that was found leaking. The reporter said when the engine was pulled back to idle, the overheat light went out.

Original NASA ASRS Text

Title: A B737-400 IN CLB AT 8000 FT DECLARED AN EMER AND DIVERTED DUE TO L ENG OVERHEAT WARNING CAUSED BY A LEAKING HIGH PRESSURE BLEED DUCT CLAMP.

Narrative: ENG OVERHEAT. RETURN TO LAND. NO OTHER PROBS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE OVERHEAT WARNING EMER WAS CAUSED BY A L ENG HIGH PRESSURE BLEED DUCT CLAMP THAT WAS FOUND LEAKING. THE RPTR SAID WHEN THE ENG WAS PULLED BACK TO IDLE, THE OVERHEAT LIGHT WENT OUT.

Data retrieved from NASA's ASRS site as of July 2007 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.