An air carrier B737-200 flight crew has the left engine generator fail on takeoff. They declared an ...

Attributes
ACN	361917
Time
Date	199702
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord tower : ord
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff cruise other landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 192 flight time total : 8900 flight time type : 739
ASRS Report	361917
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On takeoff above 100 KIAS, observed 1, 1 second flash of master caution and 'elec' annunciator. Shortly after gear up left engine generator failed. Right engine accepted appropriate transfer bus functions. APU inoperative and deferred by maintenance. Left engine generator indicated low oil pressure. Unsure of right engine generator constant speed drive servicing status. Due to IMC, ice and apparent desire of ord ATC to put us into normal flow of inbound traffic, elected to declare emergency for priority handling. At 5000 ft MSL elected to attempt reset of left engine generator -- successful. Continued approach to landing due to uncertain future of generator. All appropriate checklists completed. Flight attendants advised in flight, but no cabin preparation required or directed. Post flight revealed low/no oil in left engine constant speed drive. Callback conversation with reporter revealed the following information: this B737-200 said that the maintenance personnel concluded that the constant speed drive had been under or not serviced during its last check. They serviced the unit, inspected it and returned it to the line with no repairs necessary. He said that the flight crew's decision to return immediately was a factor in not having to repair the constant speed drive according to the maintenance personnel.

Original NASA ASRS Text

Title: AN ACR B737-200 FLC HAS THE L ENG GENERATOR FAIL ON TKOF. THEY DECLARED AN EMER AND RETURNED AND LANDED. DURING THE POST FLT INSPECTION IT WAS FOUND THAT THE UNIT WAS WITHOUT OIL.

Narrative: ON TKOF ABOVE 100 KIAS, OBSERVED 1, 1 SECOND FLASH OF MASTER CAUTION AND 'ELEC' ANNUNCIATOR. SHORTLY AFTER GEAR UP L ENG GENERATOR FAILED. R ENG ACCEPTED APPROPRIATE TRANSFER BUS FUNCTIONS. APU INOP AND DEFERRED BY MAINT. L ENG GENERATOR INDICATED LOW OIL PRESSURE. UNSURE OF R ENG GENERATOR CONSTANT SPD DRIVE SERVICING STATUS. DUE TO IMC, ICE AND APPARENT DESIRE OF ORD ATC TO PUT US INTO NORMAL FLOW OF INBOUND TFC, ELECTED TO DECLARE EMER FOR PRIORITY HANDLING. AT 5000 FT MSL ELECTED TO ATTEMPT RESET OF L ENG GENERATOR -- SUCCESSFUL. CONTINUED APCH TO LNDG DUE TO UNCERTAIN FUTURE OF GENERATOR. ALL APPROPRIATE CHKLISTS COMPLETED. FLT ATTENDANTS ADVISED IN FLT, BUT NO CABIN PREPARATION REQUIRED OR DIRECTED. POST FLT REVEALED LOW/NO OIL IN L ENG CONSTANT SPD DRIVE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THIS B737-200 SAID THAT THE MAINT PERSONNEL CONCLUDED THAT THE CONSTANT SPD DRIVE HAD BEEN UNDER OR NOT SERVICED DURING ITS LAST CHK. THEY SERVICED THE UNIT, INSPECTED IT AND RETURNED IT TO THE LINE WITH NO REPAIRS NECESSARY. HE SAID THAT THE FLC'S DECISION TO RETURN IMMEDIATELY WAS A FACTOR IN NOT HAVING TO REPAIR THE CONSTANT SPD DRIVE ACCORDING TO THE MAINT PERSONNEL.

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.

An air carrier B737-200 flight crew has the left engine generator fail on takeoff. They declared an emergency and returned and landed. During the post flight inspection it was found that the unit was without oil.