SDR ASAA2015011010192

Service difficulty report · Circuit Breaker · Boeing 737990ER

Difficulty date: January 10, 2015
Submitted: January 12, 2015
Operation: Air carrier
Aircraft: N442AS
Make and model: Boeing 737990ER
Aircraft serial: 43293
Aircraft time: 4,402 hours, 1,398 cycles
System (JASC): 2230 · Auto Throttle System
Part: Circuit Breaker
Condition: Tripped
Location: Autothrottle
Stage of operation: TX
How discovered: 9
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

CIRCUIT BREAKER AUTOTHROTTLE DC-1 ON P18-1 E, IS TRIPPED ON PRE-FLIGHT INSPECTION. ACFT GROUNDED. FLIGHT LEG NR 1 SHOWS 8 FAULTS FOR 28V INVALID AT LANDING, ELEV 385, SUSPECT SEATBELT. IAW MM 20-60-01, RESET AT DC-1 CIRCUIT BREAKER, PERFORMED REQUIRED LWMP TESTS IAW FIM 22-11/802 BITE GRP 43. OPS NORMAL. NO HISTORY 30 DAYS. GROUND VERIFICATION GOOD.