SDR ASAA2017111222546

Service difficulty report · Circuit Breaker · Boeing 737990ER

Difficulty date: November 12, 2017
Submitted: November 14, 2017
Operation: Air carrier
Aircraft: N481AS
Make and model: Boeing 737990ER
Aircraft serial: 44106
Aircraft time: 9,107 hours, 3,077 cycles
System (JASC): 2210 · Autopilot System
Part: Circuit Breaker
Condition: Tripped
Location: Control Panel
Stage of operation: NR
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

MCP DC1 CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. INSPECTED THE CIRCUIT BREAKER & PANEL AREA, NO DEFECTS NOTED, RESET THE CIRCUIT BREAKER. ACCOMPLISHED AN MCP REPLACEMENT TEST BITE GRP 32, DFCS CURRENT STATUS, AND LAND VERIFY BITE GRP 49. ALL TESTS PASS, SYS OPS CHECKED NORMAL.