SDR SWAA2021022550549

Service difficulty report · Circuit Breaker · Boeing 7377H4

Difficulty date: February 22, 2021
Submitted: February 25, 2021
Operation: Air carrier
Aircraft: N422WN
Make and model: Boeing 7377H4
Aircraft serial: 29826
Aircraft time: 64,487 hours, 37,970 cycles
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Circuit Breaker
Condition: Tripped
Location: Te Flaps
Stage of operation: AP
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

FLAPS WOULD NOT EXTEND NORMALLY AND AFTER RUNNING CHECKLIST OBSERVED SLIGHT ASSEMETRY BETWEEN LEFT AND RIGHT FLAP NEEDLES. REACCOMPLISHED FLAP ASSEMBLY CHECK LIST / PERFORM FIM 27-51 TASK 822, FOUND C/B ON P62 PANEL A12 OPEN. CLOSED C/B P62 A12. PERFORMED FIM 27-51 TASK 801, NO FAULTS. FAULT HISTORY SHOWS FAULTS 27-53280 AS INTERMITTENT INACTIVE. CYCLED FLAPS, OPS NORMAL

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