Partial engine failure over the north atlantic.

Attributes
ACN	311801
Time
Date	199507
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : snn
State Reference	FO
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : eggx
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other other
Route In Use	enroute : other oceanic enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 2000
ASRS Report	311801
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At 25 mi west in the minneapolis area at FL370, #1 engine rolled back to idle. Exited track in accordance with with mnps procedures. Later determined engine had failed but with no cockpit indications. ATC cleared us to FL280 for relight. Restarted to idle only. Crew proceeded to snn because engine responded to idle only. Company requested to fly to lgw. While en route to lgw, engine then responded to normal inputs. Crew contacted company and with our concurrence, decided to fly to destination (ory) with engine normal. We rejoined our flight plan over landsend, received direct din. Then flight plan route. Flight remained normal until approach when #1 engine failed again on short approach. Landed normally with no event. Ory maintenance later determined reason for engine failure was a bad fuel regulator.

Original NASA ASRS Text

Title: PARTIAL ENG FAILURE OVER THE N ATLANTIC.

Narrative: AT 25 MI W IN THE MINNEAPOLIS AREA AT FL370, #1 ENG ROLLED BACK TO IDLE. EXITED TRACK IAW WITH MNPS PROCS. LATER DETERMINED ENG HAD FAILED BUT WITH NO COCKPIT INDICATIONS. ATC CLRED US TO FL280 FOR RELIGHT. RESTARTED TO IDLE ONLY. CREW PROCEEDED TO SNN BECAUSE ENG RESPONDED TO IDLE ONLY. COMPANY REQUESTED TO FLY TO LGW. WHILE ENRTE TO LGW, ENG THEN RESPONDED TO NORMAL INPUTS. CREW CONTACTED COMPANY AND WITH OUR CONCURRENCE, DECIDED TO FLY TO DEST (ORY) WITH ENG NORMAL. WE REJOINED OUR FLT PLAN OVER LANDSEND, RECEIVED DIRECT DIN. THEN FLT PLAN RTE. FLT REMAINED NORMAL UNTIL APCH WHEN #1 ENG FAILED AGAIN ON SHORT APCH. LANDED NORMALLY WITH NO EVENT. ORY MAINT LATER DETERMINED REASON FOR ENG FAILURE WAS A BAD FUEL REGULATOR.

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.