An MD80 flight crew experienced high CSD oil temperature on climb and started the APU; which shut down with an overspeed fault. Flight crew declared an emergency and diverted to the nearest suitable airport.

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Attributes
ACN	788368
Time
Date	200805
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 27000
Environment
Flight Conditions	VMC VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	788368
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition flight crew : diverted to another airport flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During climb out of ZZZ; noticed left CSD oil outlet temperature in the yellow band. Accomplished the QRH procedure. APU was started as a precaution. Once level; the left CSD oil outlet temperature kept increasing to the red radial. Xferred the left electrical system to the APU. Shortly after this; APU shut down with an overspeed fault. Diverted to ZZZ1. Declared emergency due to overweight landing. Landing was uneventful at ZZZ1.

Original NASA ASRS Text

Title: AN MD80 FLT CREW EXPERIENCED HIGH CSD OIL TEMP ON CLIMB AND STARTED THE APU; WHICH SHUT DOWN WITH AN OVERSPEED FAULT. FLT CREW DECLARED AN EMERGENCY AND DIVERTED TO THE NEAREST SUITABLE ARPT.

Narrative: DURING CLB OUT OF ZZZ; NOTICED L CSD OIL OUTLET TEMP IN THE YELLOW BAND. ACCOMPLISHED THE QRH PROC. APU WAS STARTED AS A PRECAUTION. ONCE LEVEL; THE L CSD OIL OUTLET TEMP KEPT INCREASING TO THE RED RADIAL. XFERRED THE L ELECTRICAL SYS TO THE APU. SHORTLY AFTER THIS; APU SHUT DOWN WITH AN OVERSPEED FAULT. DIVERTED TO ZZZ1. DECLARED EMER DUE TO OVERWT LNDG. LNDG WAS UNEVENTFUL AT ZZZ1.

Data retrieved from NASA's ASRS site as of May 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.