SDR 9803146716

Service difficulty report · Start Valve · Boeing 747251F

Difficulty date
February 18, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N616US
Make and model
Boeing 747251F
Aircraft serial
21120
Engine
Pwa JT9D7J
Part
Start Valve
Condition
Failed
Location
Nr 3 Engine
Stage of operation
CL
Nature of condition
J
Precautionary procedure
A, E

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

What was found

DURING CLIMB, THE NR 3 START VALVE LIGHT ILLUMINATED. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT RETURNED TO NRT. MAINTENANCE CHANGED THE START VALVE AND THE START PRESSURE SWITCH. ALL INDICATIONS WERE NORMAL AND THE AIRCRAFT RETURNED TO SERVICE. EXACT PART CAUSING PROBLEM TO BE DETERMINED.