Air carrier widebody transport lost 1700' and deviated 7 NM off track when 3 engines had a compressor stall as the aircraft transited a high level takeoff at FL410.

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Attributes
ACN	161908
Time
Date	199010
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : tyo
State Reference	FO
Altitude	msl bound lower : 39300 msl bound upper : 41000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : rjtg
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : pacific enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : commercial pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 250 flight time total : 5550 flight time type : 1800
ASRS Report	161908
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude inflight encounter : weather other anomaly other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	other

Narrative:

Encountered a rather strong takeoff at approximately 157 degrees east en route hnl-nrt. At FL410, moderate-heavy turbulence, static air temperature rise from -63 to -30 degrees. Engines #1, #3 and #4 compressor stalled. Aircraft descended from 41000 to 39300' and deviated approximately 7 NM right course west/O clearance. Descent required due to loss of thrust. Once clear of WX climbed back to FL410 and reported to tokyo and hnl radio. Flight continued to destination with no further problems.

Original NASA ASRS Text

Title: ACR WDB LOST 1700' AND DEVIATED 7 NM OFF TRACK WHEN 3 ENGINES HAD A COMPRESSOR STALL AS THE ACFT TRANSITED A HIGH LEVEL TKOF AT FL410.

Narrative: ENCOUNTERED A RATHER STRONG TKOF AT APPROX 157 DEGS E ENRTE HNL-NRT. AT FL410, MODERATE-HEAVY TURB, STATIC AIR TEMP RISE FROM -63 TO -30 DEGS. ENGS #1, #3 AND #4 COMPRESSOR STALLED. ACFT DSNDED FROM 41000 TO 39300' AND DEVIATED APPROX 7 NM RIGHT COURSE W/O CLRNC. DSNT REQUIRED DUE TO LOSS OF THRUST. ONCE CLR OF WX CLBED BACK TO FL410 AND RPTED TO TOKYO AND HNL RADIO. FLT CONTINUED TO DEST WITH NO FURTHER PROBS.

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.