An MD83 in climb at FL180 declared an emergency and diverted due to a tail compartment high temperature warning light illuminated caused by a failed seal on the right pack heat exchanger located in the compartment.

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Attributes
ACN	422694
Time
Date	199812
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pbi
State Reference	FL
Altitude	msl bound lower : 18000 msl bound upper : 18000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	other other
Route In Use	departure sid : sid enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 12000 flight time type : 2600
ASRS Report	422694
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other

Narrative:

Tail compartment temperature high light came on during climb out. Went out when throttles closed. Returned to pbi and landed at approximately 137000 pounds (maximum gross landing weight 130000 pounds). Maintenance found blown seal on right air-conditioning pack heat exchanger. I was concerned about airworthiness of aircraft. For this reason I elected not to complete the prescribed procedure, but to immediately close throttles (after warning light went from intermittent to steady) and return to pbi for landing.

Original NASA ASRS Text

Title: AN MD83 IN CLB AT FL180 DECLARED AN EMER AND DIVERTED DUE TO A TAIL COMPARTMENT HIGH TEMP WARNING LIGHT ILLUMINATED CAUSED BY A FAILED SEAL ON THE R PACK HEAT EXCHANGER LOCATED IN THE COMPARTMENT.

Narrative: TAIL COMPARTMENT TEMP HIGH LIGHT CAME ON DURING CLBOUT. WENT OUT WHEN THROTTLES CLOSED. RETURNED TO PBI AND LANDED AT APPROX 137000 LBS (MAX GROSS LNDG WT 130000 LBS). MAINT FOUND BLOWN SEAL ON R AIR-CONDITIONING PACK HEAT EXCHANGER. I WAS CONCERNED ABOUT AIRWORTHINESS OF ACFT. FOR THIS REASON I ELECTED NOT TO COMPLETE THE PRESCRIBED PROC, BUT TO IMMEDIATELY CLOSE THROTTLES (AFTER WARNING LIGHT WENT FROM INTERMITTENT TO STEADY) AND RETURN TO PBI FOR LNDG.

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.