Service difficulty report · Control Unit · Boeing 747236B

Difficulty date
May 24, 2003
Submitted
May 28, 2003
Operation
Air carrier
Aircraft
N924FT
Make and model
Boeing 747236B
Aircraft serial
21730
Aircraft time
64,218 hours, 17,975 cycles
Part
Control Unit
Part number
21B73D
Condition
Inoperative
Location
Nr 1 Engine
Stage of operation
TX
How discovered
V
Nature of condition
K
Precautionary procedure
D

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

What was found

RTB, NR 1 ENG GENERATOR FIELD LT NR 4 ADP INOP. NR 2 GENERATOR ALREADY ON DEFERRAL, 1-2ND RTB NR 3 GEN INOP. SWAPPED NR 1 & NR 2 GCU (NR 2 GEN DEFERRED) OPS NORMAL. CLEANED & RESEATED CONNECTORS FOR NR 4 ADP S/O VALVE, ADP OPS NORMAL 2ND RTB NR 3 ENG GENERATOR OPS CHECKED NORMAL ON ENG RUN. SWAPPED GLU'S FROM NR 2 GENERATOR (ON DEFERRAL) NR 1 GEN OPS NORMAL. NO FURTHER DISCREPENCIES.