Narrative:

Accepted an aircraft with the left generator inop. APU faulted in route approx 150 miles east of ZZZ. Attempted restart; APU started; but upon reaching 100% faulted again. Advised ATC; declared emergency; ran checklist for right generator inoperative; requested a diversion to ZZZ.

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Original NASA ASRS Text

Title: Dispatched with one generator inoperative; a B757-200 flight crew diverted to a nearby airport when the APU failed enroute.

Narrative: Accepted an aircraft with the left generator inop. APU faulted in route approx 150 miles east of ZZZ. Attempted restart; APU started; but upon reaching 100% faulted again. Advised ATC; declared emergency; ran checklist for right generator INOP; requested a diversion to ZZZ.

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.