MD80 captain reports being dispatched with an inoperative engine driven generator and using the APU ...

Narrative:

In cruise at [FL330] we noticed an APU oil temperature high light come on with a master caution warning. We referenced the QRH and followed the checklist for APU oil temperature hi; which directed us to shut down the APU. This presented another problem since the right generator was deferred and now we were down to only the left generator. After that we ran the landing single generator checklist from the QRH. We declared an emergency due to the fact we were now single generator and diverted. Next I handed the controls to my co-pilot and communicated with my lead flight attendant about the problem and we were diverting. I told my lead flight attendant to please prepare the cabin for a normal approach and landing. I then proceeded to contact dispatch and inform them of the situation and also talked with maintenance control. Finally I briefed the passengers. Everything ran very smoothly and had no problem landing. Everyone was very professional and worked as a team. Thank you to maintenance control; dispatch; and the great crew on board. Suggestion: try to get the right generator fixed; so the APU is not running continuously for multiple days on all flights.

Original NASA ASRS Text

Title: MD80 Captain reports being dispatched with an inoperative engine driven generator and using the APU generator as the second power source. APU malfunction enroute requires it to be shut down; resulting in a diversion to the nearest suitable airport.

Narrative: In cruise at [FL330] we noticed an APU OIL TEMP HIGH light come on with a master caution warning. We referenced the QRH and followed the checklist for APU OIL TEMP HI; which directed us to shut down the APU. This presented another problem since the right generator was deferred and now we were down to only the left generator. After that we ran the landing single generator checklist from the QRH. We declared an emergency due to the fact we were now single generator and diverted. Next I handed the controls to my Co-pilot and communicated with my Lead Flight Attendant about the problem and we were diverting. I told my lead FA to please prepare the cabin for a normal approach and landing. I then proceeded to contact Dispatch and inform them of the situation and also talked with Maintenance Control. Finally I briefed the passengers. Everything ran very smoothly and had no problem landing. Everyone was very professional and worked as a team. Thank you to Maintenance Control; Dispatch; and the great crew on board. Suggestion: try to get the right generator fixed; so the APU is not running continuously for multiple days on all flights.

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	911299
Time
Date	201009
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	APU
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

MD80 captain reports being dispatched with an inoperative engine driven generator and using the APU generator as the second power source. APU malfunction enroute requires it to be shut down; resulting in a diversion to the nearest suitable airport.