|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : zlc.artcc|
|Altitude||msl single value : 37000|
|Controlling Facilities||artcc : zlc.artcc|
|Operator||common carrier : air carrier|
|Make Model Name||DC-8 62|
|Operating Under FAR Part||Part 121|
|Navigation In Use||other|
|Flight Phase||cruise : level|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 150|
flight time total : 9000
flight time type : 5000
|Function||flight crew : first officer|
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 120|
flight time total : 7050
flight time type : 5130
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||other flight crewa|
other flight crewb
|Resolutory Action||flight crew : landed in emergency condition|
flight crew : declared emergency
In cruise at FL370 we heard a loud bang, the aircraft shook and began to lose pressurization. We donned oxygen masks and completed loss of pressurization checklist and initiated descent to 14000 ft. The engine instruments indicated a failure of #2 engine. We secured #2 engine via the engine failure checklist and declared an emergency with ZLC. We diverted to den and landed without further incident. Callback conversation with reporter revealed the following information: reporter said that the cowling separated from the #2 engine. The engine continued to run but instrument indications, because of wiring separating with the engine, indicated it was not. Decision was made to shut it down. Pressurization was lost when cowling struck the fuselage cutting 2 openings over the left wing with other parts striking and damaging the horizontal stabilizer. Company investigation has not determined why cowling came off.
Original NASA ASRS Text
Title: ENG SHUTDOWN AND PRESSURIZATION LOSS DUE TO ENG COWLING LOSS ON A DC8-62.
Narrative: IN CRUISE AT FL370 WE HEARD A LOUD BANG, THE ACFT SHOOK AND BEGAN TO LOSE PRESSURIZATION. WE DONNED OXYGEN MASKS AND COMPLETED LOSS OF PRESSURIZATION CHKLIST AND INITIATED DSCNT TO 14000 FT. THE ENG INSTS INDICATED A FAILURE OF #2 ENG. WE SECURED #2 ENG VIA THE ENG FAILURE CHKLIST AND DECLARED AN EMER WITH ZLC. WE DIVERTED TO DEN AND LANDED WITHOUT FURTHER INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR SAID THAT THE COWLING SEPARATED FROM THE #2 ENG. THE ENG CONTINUED TO RUN BUT INST INDICATIONS, BECAUSE OF WIRING SEPARATING WITH THE ENG, INDICATED IT WAS NOT. DECISION WAS MADE TO SHUT IT DOWN. PRESSURIZATION WAS LOST WHEN COWLING STRUCK THE FUSELAGE CUTTING 2 OPENINGS OVER THE L WING WITH OTHER PARTS STRIKING AND DAMAGING THE HORIZ STABILIZER. COMPANY INVESTIGATION HAS NOT DETERMINED WHY COWLING CAME OFF.
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.