Generator drive overheat and fire.

Attributes
ACN	287804
Time
Date	199411
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : private pilot : instrument pilot : commercial pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 13000 flight time type : 600
ASRS Report	287804
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp
Experience	flight time last 90 days : 160 flight time total : 6000 flight time type : 1300
ASRS Report	287805
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After engine shutdown, completing the securing check, we left the aircraft. At another gate we were paged by maintenance. They told us #1 engine constant speed drive had overheated. Ground service put a fire extinguisher into the constant speed drive outlet and put out the fire. The constant speed drive had been disconnected in flight and placarded in dtw. We had no indications of any irregularity in the cockpit. Note: at engine start in dtw so checked and there were neither frequency nor voltage on #1 constant speed drive. Supplemental information from acn 287805: after parking aircraft at ord. Completed checklist departed aircraft 10-15 mins later informed by maintenance that #1 constant speed drive had caught fire.

Original NASA ASRS Text

Title: GENERATOR DRIVE OVERHEAT AND FIRE.

Narrative: AFTER ENG SHUTDOWN, COMPLETING THE SECURING CHK, WE LEFT THE ACFT. AT ANOTHER GATE WE WERE PAGED BY MAINT. THEY TOLD US #1 ENG CONSTANT SPD DRIVE HAD OVERHEATED. GND SVC PUT A FIRE EXTINGUISHER INTO THE CONSTANT SPD DRIVE OUTLET AND PUT OUT THE FIRE. THE CONSTANT SPD DRIVE HAD BEEN DISCONNECTED IN FLT AND PLACARDED IN DTW. WE HAD NO INDICATIONS OF ANY IRREGULARITY IN THE COCKPIT. NOTE: AT ENG START IN DTW SO CHKED AND THERE WERE NEITHER FREQ NOR VOLTAGE ON #1 CONSTANT SPD DRIVE. SUPPLEMENTAL INFO FROM ACN 287805: AFTER PARKING ACFT AT ORD. COMPLETED CHKLIST DEPARTED ACFT 10-15 MINS LATER INFORMED BY MAINT THAT #1 CONSTANT SPD DRIVE HAD CAUGHT FIRE.

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.