<< >> NASA ASRS Report 807251, October 2008

A failed generator shortly after takeoff caused B767-300 to dump fuel and return to departure airport.

Attributes
ACN	807251
Time
Date	200810
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 1000
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	departure sid : zzz
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 19000 flight time type : 6000
ASRS Report	807251
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas gen drive msg
Resolutory Action	other
Consequence	Other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After takeoff; we received an EICAS message 'left generator drive.' we started the APU. I asked the first officer to take over flying duties. Myself and the relief pilot pulled out the checklist. As per the checklist we disconnected the left generator drive. The left generator is now inoperative for the rest of the flight. Climbing out; we contacted dispatch and talked to maintenance. After we made a decision to return; we dumped fuel at FL290 over the water off the coast. We dumped about 44000 pounds and landed overweight by about 5000 pounds.

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Original NASA ASRS Text

Title: A FAILED GENERATOR SHORTLY AFTER TKOF CAUSED B767-300 TO DUMP FUEL AND RETURN TO DEP ARPT.

Narrative: AFTER TKOF; WE RECEIVED AN EICAS MESSAGE 'L GENERATOR DRIVE.' WE STARTED THE APU. I ASKED THE FO TO TAKE OVER FLYING DUTIES. MYSELF AND THE RELIEF PLT PULLED OUT THE CHKLIST. AS PER THE CHKLIST WE DISCONNECTED THE L GENERATOR DRIVE. THE L GENERATOR IS NOW INOP FOR THE REST OF THE FLT. CLBING OUT; WE CONTACTED DISPATCH AND TALKED TO MAINT. AFTER WE MADE A DECISION TO RETURN; WE DUMPED FUEL AT FL290 OVER THE WATER OFF THE COAST. WE DUMPED ABOUT 44000 LBS AND LANDED OVERWT BY ABOUT 5000 LBS.

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.