Air carrier widebody transport in-flight engine shutdown, diversion to alternate.

Attributes
ACN	90369
Time
Date	198807
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mls
State Reference	MT
Altitude	msl bound lower : 27000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 176 flight time total : 23775 flight time type : 9602
ASRS Report	90369
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	faa : reviewed incident with flight crew Other
Supplementary
Primary Problem	Aircraft

Narrative:

Flight sea to dtw. I was 75 mi west of MLS, mt, at 37000' in the clear. We observed an outside temperature change from -41 to -47 degrees, and a minor increase in mach airspeed. I reduced power to .82 N1 and upon increasing power #1 N1 didn't pick up (accelerate). Believed I had a stalled engine and as I was shutting it down got a fire light. Completed shutdown and checklists. Descended to 27000'. Talked with flight dispatch and maintenance control. Upon going to idle and cutting start lever, light went out. This action/observation was so simultaneous that the time was 3-4 seconds. Maintenance control and I discussed a restart and they said it was worth a try. We attempted restart using procedure for 'over 16 1% N2.' no light off. Again talked with maintenance control and they advised trying procedure #2 'below 16 1% N2 a & B.' again, no light off. Proceeded to msp and landed. Requested emergency equipment standby. Maintenance found blown duct as some part broke. Therefore, no start. 2 hour repair and we continued to dtw.

Original NASA ASRS Text

Title: ACR WDB INFLT ENGINE SHUTDOWN, DIVERSION TO ALTERNATE.

Narrative: FLT SEA TO DTW. I WAS 75 MI W OF MLS, MT, AT 37000' IN THE CLEAR. WE OBSERVED AN OUTSIDE TEMP CHANGE FROM -41 TO -47 DEGS, AND A MINOR INCREASE IN MACH AIRSPD. I REDUCED PWR TO .82 N1 AND UPON INCREASING PWR #1 N1 DIDN'T PICK UP (ACCELERATE). BELIEVED I HAD A STALLED ENG AND AS I WAS SHUTTING IT DOWN GOT A FIRE LIGHT. COMPLETED SHUTDOWN AND CHKLISTS. DSNDED TO 27000'. TALKED WITH FLT DISPATCH AND MAINT CTL. UPON GOING TO IDLE AND CUTTING START LEVER, LIGHT WENT OUT. THIS ACTION/OBSERVATION WAS SO SIMULTANEOUS THAT THE TIME WAS 3-4 SECS. MAINT CTL AND I DISCUSSED A RESTART AND THEY SAID IT WAS WORTH A TRY. WE ATTEMPTED RESTART USING PROC FOR 'OVER 16 1% N2.' NO LIGHT OFF. AGAIN TALKED WITH MAINT CTL AND THEY ADVISED TRYING PROC #2 'BELOW 16 1% N2 A & B.' AGAIN, NO LIGHT OFF. PROCEEDED TO MSP AND LANDED. REQUESTED EMER EQUIP STANDBY. MAINT FOUND BLOWN DUCT AS SOME PART BROKE. THEREFORE, NO START. 2 HR REPAIR AND WE CONTINUED TO DTW.

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.