SDR 9711146614

Service difficulty report · Engine · Boeing 747251B

Difficulty date: June 8, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N614US
Make and model: Boeing 747251B
Aircraft serial: 20359
Engine: Pwa JT9D7F
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Malfunctioned
Location: Nr 1
Stage of operation: CR
Nature of condition: M, J
Precautionary procedure: E

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

WHILE IN CRUISE, THE NR 1 ENGINE FUEL FLOW INCREASED TO 15,000 LBS PER HOUR. EGT WENT INTO THE RED FOR 15 SECONDS. POWER LEVER WAS RETARDED TO IDLE WITH NO AFFECT FOR 5 SECONDS. FUEL HEAT WAS APPLIED AND THE ENGINE WAS SHUT DOWN. MAINTENANCE PERFORMED AN OVERTEMP INSPECTION PER MM 71-00-00 AND AN OVERSPEED INSPECTION PER MM 72-00-00, NO DEFECTS WERE NOTED. NUMEROUS PARTS WERE CHANGED AND SUBSEQUENT ENGINE RUN WAS NORMAL. EXACT PART CAUSING PROBLEM TO BE DETERMINED.