SDR AALA202210173501

Service difficulty report · Circuit Card · Boeing 737

Difficulty date: October 14, 2022
Submitted: October 17, 2022
Operation: Air carrier
Aircraft: N823AN
Make and model: Boeing 737
Aircraft serial: 40641
Aircraft time: 21,790 hours, 2,521 cycles
System (JASC): 2460 · DC Power Distribution System
Part: Circuit Card
Condition: Failed
Location: Zone 200 - Fuse
Stage of operation: CR
How discovered: V
Nature of condition: G
Precautionary procedure: A

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

What was found

AIRCRAFT WAS GROUNDED: STANDBY DC FEED CIRCUIT BREAKER TRIPPED. NO SMOKE OR FUMES. CAUSED MULTIPLE FAILURES. AIRCRAFT DIVERTED TO KEF. EMERGENCY WAS DECLARED AND WAS OVERWEIGHT FOR LANDING. FOUND MAINTENANCE MESSAGE 24-39288, CE2471823 CIRCUIT BREAKER POPPED, STANDBY DC FEED RIGHT POWER DRIVE UNIT 73 FAULTY, REPLACED RIGHT POWER DRIVE UNIT 73M6 (AALA202210179264) AND M7 POWER MODULE (AALA202210179898) AND P300M5 DC2 CIRCUIT CARD (AALA202210173501) PER FIM DMC-B787-A-24-00-F9-BLA-421A-A.