SDR 9903466627

Service difficulty report · Retract Mech · Boeing 747251B

Difficulty date
August 26, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N627US
Make and model
Boeing 747251B
Aircraft serial
21708
Part
Retract Mech
Condition
Malfunctioned
Location
Le Flaps
Stage of operation
CL
Nature of condition
E, J
Precautionary procedure
A, J

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

What was found

DURING CLIMB, THE LEADING EDGE FLAP AMBER LIGHTS ILLUMINATED ACCOMPANIED WITH AIRFRAME VIBRATION. AMBER LGHTS FOR THE NR 1 AND NR 2 LEFT WING LEADING EDGE FLAPS REMAINED ILLUMINATED AFTER USING THE ALTERNATE SYSTEM. AIRCRAFT DIVERTED NRT, DUMPED 120,000 LBS OF FUEL, AND LANDED WITHOUT INCIDENT. REPLACED CIRCUIT CARDS YA3A08 AND YA3A13. OPERATIONAL CHECK GOOD. EXACT CAUSE OF EVENT TO BE DETERMINED.