A B737-500 on climb at 16000 ft had both left and right engine driven generators fail. Accomplished dual generator fail checklist restored power.

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Attributes
ACN	591715
Time
Date	200308
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 16000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : zzz
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 84 flight time total : 2600 flight time type : 84
ASRS Report	591718
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : generator bus off warning lights other flight crewa other flight crewb
Resolutory Action	aircraft : equipment problem dissipated controller : issued new clearance flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

On departure, approaching abcde intersection, passing approximately 16000 ft MSL, we experienced dual generator failure. While analyzing the situation, we requested and received a block altitude and holding to the southwest of ZZZ. After running the dual generator checklist, all system returned to normal. Since we were so close to ZZZ, I consulted with dispatch and maintenance control on whether to continue on to ZZZ1 or return to ZZZ. Maintenance suggested return to ZZZ, and I concurred. Return to ZZZ was uneventful. An emergency was never declared. Callback conversation with reporter revealed the following information: the reporter stated the engine driven generators tripped off simultaneously and remained off a short period of time until completing the dual generator fail checklist, power was restored. The reporter said the standby bus AC/dc system worked as advertised with no interruption. The reporter stated maintenance at the diversion station replaced a generator control panel and operation of the generators checked ok. The reporter said the airplane was flown the remainder of the day, and the generators operated ok.

Original NASA ASRS Text

Title: A B737-500 ON CLB AT 16000 FT HAD BOTH L AND R ENG DRIVEN GENERATORS FAIL. ACCOMPLISHED DUAL GENERATOR FAIL CHKLIST RESTORED PWR.

Narrative: ON DEP, APCHING ABCDE INTXN, PASSING APPROX 16000 FT MSL, WE EXPERIENCED DUAL GENERATOR FAILURE. WHILE ANALYZING THE SIT, WE REQUESTED AND RECEIVED A BLOCK ALT AND HOLDING TO THE SW OF ZZZ. AFTER RUNNING THE DUAL GENERATOR CHKLIST, ALL SYS RETURNED TO NORMAL. SINCE WE WERE SO CLOSE TO ZZZ, I CONSULTED WITH DISPATCH AND MAINT CTL ON WHETHER TO CONTINUE ON TO ZZZ1 OR RETURN TO ZZZ. MAINT SUGGESTED RETURN TO ZZZ, AND I CONCURRED. RETURN TO ZZZ WAS UNEVENTFUL. AN EMER WAS NEVER DECLARED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ENG DRIVEN GENERATORS TRIPPED OFF SIMULTANEOUSLY AND REMAINED OFF A SHORT PERIOD OF TIME UNTIL COMPLETING THE DUAL GENERATOR FAIL CHKLIST, PWR WAS RESTORED. THE RPTR SAID THE STANDBY BUS AC/DC SYS WORKED AS ADVERTISED WITH NO INTERRUPTION. THE RPTR STATED MAINT AT THE DIVERSION STATION REPLACED A GENERATOR CTL PANEL AND OP OF THE GENERATORS CHKED OK. THE RPTR SAID THE AIRPLANE WAS FLOWN THE REMAINDER OF THE DAY, AND THE GENERATORS OPERATED OK.

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.