B747-200 #3 engine failed while at cruise altitude; and the flight crew diverted.

Attributes
ACN	765226
Time
Date	200712
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : zzz.artcc
State Reference	US
Altitude	msl single value : 31000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	B747-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 170 flight time total : 18000 flight time type : 272
ASRS Report	765226
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : landed as precaution
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

At cruise #3 engine decided to wind down after muffled bang; slight yaw; loss of thrust. Normal egt; N1; N2; except ff did not decrease as egt; N1; N2 still had about 2500 P/H ff with #3 engine wind-milling. Performed appropriate checklists; attempted restart; successful but engine failed to maintain thrust and not response to throttle movement. Shut down and diverted to ZZZ. Safe flight and landing ZZZ.

Original NASA ASRS Text

Title: B747-200 #3 ENG FAILED WHILE AT CRUISE ALT; AND THE FLT CREW DIVERTED.

Narrative: AT CRUISE #3 ENG DECIDED TO WIND DOWN AFTER MUFFLED BANG; SLIGHT YAW; LOSS OF THRUST. NORMAL EGT; N1; N2; EXCEPT FF DID NOT DECREASE AS EGT; N1; N2 STILL HAD ABOUT 2500 P/H FF WITH #3 ENG WIND-MILLING. PERFORMED APPROPRIATE CHKLISTS; ATTEMPTED RESTART; SUCCESSFUL BUT ENG FAILED TO MAINTAIN THRUST AND NOT RESPONSE TO THROTTLE MOVEMENT. SHUT DOWN AND DIVERTED TO ZZZ. SAFE FLT AND LNDG ZZZ.

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