Service difficulty report · Actuator · Boeing 747122

Difficulty date
May 1, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N853FT
Make and model
Boeing 747122
Aircraft serial
19753
Engine
Pwa JT9D7A
Part
Actuator
Part number
63030000
Condition
Inoperative
Location
Nr 4 Engine
Stage of operation
CR
Nature of condition
X
Precautionary procedure
A

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

What was found

NR 4 ENG FAILED IN CRUISE. TRIED TO RELIGHT 2 TIMES AT 2 DIFFERENT ALTITUDES AND WOULD NOT RELIGHT. REMOVED ENGINE FUEL CONDITION MOTOR ACTUATOR PER MM 76-11-04 PG 401 TO 404. GROUND CHECK OK STATICALLY. INSPECTED FUEL PUMP FILTER, NO CONTAMINATION FOUND. LEAK CHECK OK. FIREWALL C/PS CLEANED AND CHECKED. OP CHECK FUEL CONDITION MOTOR ACTUATOR GOOD.