SDR AALA202201257355

Service difficulty report · Switch · Boeing 777223

Difficulty date: January 18, 2022
Submitted: January 25, 2022
Operation: Air carrier
Aircraft: N798AN
Make and model: Boeing 777223
Aircraft serial: 30797
Aircraft time: 79,232 hours, 10,283 cycles
System (JASC): 5210 · Passenger/Crew Doors
Part: Switch
Condition: Failed
Location: Zone 800 - Doors
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

AIRCRAFT IN BASE MAINTENANCE: DURING PASSENGER ENTRY DOOR EMERGENCY POWER ASSIST SYSTEM CIRCUITRY FUNCTIONAL CHECK, DOOR L3 EMERGENCY POWER ASSIST SYSTEM BATTERY CONTINUITY AMBER LIGHT FAILED TO ILLUMINATE. REMOVED AND REPLACED L3 DOOR, DOOR OPEN SWITCH AND BATTERY (AALA202201251315) P2 CHECK, PERFORMED OPERATIONS CHECK GOOD PER B777-200 AMM 52-11-28, AMM 52-11-20, WDM 52-11-15.