Unscheduled landing account engine failure in cruise flight.

Attributes
ACN	114204
Time
Date	198906
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5200 flight time type : 1100
ASRS Report	114204
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

During cruise #1 engine failed, resulting in unscheduled landing and dfw airport. Callback conversation with reporter revealed the following: reporter states that the aircraft had just leveled off at 35,000' from a step climb. Cruise power was set with automatic throttle. A rumble was heard. 2 compressor stalls and the engine surged down with egt climbing. Aircraft was 100 NM from dfw where a landing was made. On inspection small metal pieces found in rear of engine. #3 main bearing had failed. Reporter was not sure if this was a 'de-rated' engine, down from 22,000 horse power to 20,000. Claims there have been a number of these failures in europe and that his company has re-rated almost all the higher rated engines as this seems to be the common factor on this type of engine. The aircraft had been in service 5 months.

Original NASA ASRS Text

Title: UNSCHEDULED LNDG ACCOUNT ENGINE FAILURE IN CRUISE FLT.

Narrative: DURING CRUISE #1 ENGINE FAILED, RESULTING IN UNSCHEDULED LNDG AND DFW ARPT. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: REPORTER STATES THAT THE ACFT HAD JUST LEVELED OFF AT 35,000' FROM A STEP CLIMB. CRUISE POWER WAS SET WITH AUTO THROTTLE. A RUMBLE WAS HEARD. 2 COMPRESSOR STALLS AND THE ENGINE SURGED DOWN WITH EGT CLIMBING. ACFT WAS 100 NM FROM DFW WHERE A LNDG WAS MADE. ON INSPECTION SMALL METAL PIECES FOUND IN REAR OF ENGINE. #3 MAIN BEARING HAD FAILED. REPORTER WAS NOT SURE IF THIS WAS A 'DE-RATED' ENGINE, DOWN FROM 22,000 HORSE POWER TO 20,000. CLAIMS THERE HAVE BEEN A NUMBER OF THESE FAILURES IN EUROPE AND THAT HIS COMPANY HAS RE-RATED ALMOST ALL THE HIGHER RATED ENGINES AS THIS SEEMS TO BE THE COMMON FACTOR ON THIS TYPE OF ENGINE. THE ACFT HAD BEEN IN SERVICE 5 MONTHS.

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.