<< >> NASA ASRS Report 123702, September 1989

4 engine heavy transport aircraft on climb lost #2 engine cowling. Loss of generator, loss of oil, returned to departure airport.

Attributes
ACN	123702
Time
Date	198909
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : phl
State Reference	PA
Altitude	msl bound lower : 10000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny tower : hlg
Operator	common carrier : air carrier
Make Model Name	Heavy Transport, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 2700 flight time type : 100
ASRS Report	123702
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Approximately 10 mins after takeoff from phl at 10000', we heard a loud noise and felt the aircraft yaw slightly. Upon inspection by an onboard mechanic, it was discovered that the #2 engine cowling had separated from the aircraft. We informed ZNY of the problem and informed them that we needed to return to phl. Our #2 generator tripped off the line, but we were able to reset it. Our #2 oil quantity gauge showed a loss of engine oil, so as a precaution, the #2 engine was shut down. After dumping fuel, we returned to hpl and made a 3-ENG landing west/O further incident. Early indications point to missing pins on the cowling hinges as the possible cause of the sep.

Related reports:

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Original NASA ASRS Text

Title: 4 ENGINE HVT ACFT ON CLIMB LOST #2 ENGINE COWLING. LOSS OF GENERATOR, LOSS OF OIL, RETURNED TO DEP ARPT.

Narrative: APPROX 10 MINS AFTER TKOF FROM PHL AT 10000', WE HEARD A LOUD NOISE AND FELT THE ACFT YAW SLIGHTLY. UPON INSPECTION BY AN ONBOARD MECH, IT WAS DISCOVERED THAT THE #2 ENG COWLING HAD SEPARATED FROM THE ACFT. WE INFORMED ZNY OF THE PROB AND INFORMED THEM THAT WE NEEDED TO RETURN TO PHL. OUR #2 GENERATOR TRIPPED OFF THE LINE, BUT WE WERE ABLE TO RESET IT. OUR #2 OIL QUANTITY GAUGE SHOWED A LOSS OF ENG OIL, SO AS A PRECAUTION, THE #2 ENG WAS SHUT DOWN. AFTER DUMPING FUEL, WE RETURNED TO HPL AND MADE A 3-ENG LNDG W/O FURTHER INCIDENT. EARLY INDICATIONS POINT TO MISSING PINS ON THE COWLING HINGES AS THE POSSIBLE CAUSE OF THE SEP.

Data retrieved from NASA's ASRS site as of August 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.