A MD80's tail compt temperature high alerted on climb out so an emergency was declared and the fligh...

Narrative:

Climbing out around 85 NM from our departure airport the aircraft was through FL250 when the tail compt temperature high annunciator illuminated. The QRH checklist was followed and the left throttle being retarded was the only way the annunciator extinguished. A return to the departure airport was initiated and the return to the field was successful. Upon inspection from the maintenance personnel; the ducting line was found to be missing a clamp allowing air to escape into the tail compartment.

Original NASA ASRS Text

Title: A MD80's TAIL COMPT TEMP HIGH alerted on climb out so an emergency was declared and the flight returned to the departure airport where Maintenance found a disconnected air duct allowing hot air directly into the tail compartment.

Narrative: Climbing out around 85 NM from our departure airport the aircraft was through FL250 when the TAIL COMPT TEMP HIGH annunciator illuminated. The QRH checklist was followed and the left throttle being retarded was the only way the annunciator extinguished. A return to the departure airport was initiated and the return to the field was successful. Upon inspection from the Maintenance personnel; the ducting line was found to be missing a clamp allowing air to escape into the tail compartment.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	957367
Time
Date	201107
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Engine Air Pneumatic Ducting
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

A MD80's tail compt temperature high alerted on climb out so an emergency was declared and the flight returned to the departure airport where maintenance found a disconnected air duct allowing hot air directly into the tail compartment.