SDR CALA2013090691077

Service difficulty report · Circuit Breaker · Boeing 757222

Difficulty date: September 5, 2013
Submitted: September 6, 2013
Operation: Air carrier
Aircraft: N507UA
Make and model: Boeing 757222
Aircraft serial: 24743
Aircraft time: 76,385 hours, 28,713 cycles
Engine: Pwa PW2037
System (JASC): 3310 · Flight Compartment Lighting
Part: Circuit Breaker
Condition: Defective
Location: Cabin
Stage of operation: IN
How discovered: C
Nature of condition: O
Precautionary procedure: K

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

What was found

WHILE TROUBLESHOOTING, FOUND CIRCUIT BREAKER FOR INDICATOR LIGHT SECT 4, ON P5 OVERHEAD, LOCATION A35, DEFECTIVE. MOVING CIRCUIT BREAKER WHILE CLOSED CAUSES SECTION 4 INDICATOR LIGHTS TO FLICKER, TO CYCLE ON & OFF. REPLACED BREAKER P11-A35, MASTER DIM & TEST CHECKED OK IAW MM. FOUND BPCU WAS REPLACED & CHECKED OK IAW MM.