SDR YENA2025030300218

Service difficulty report · Power Supply · Airbus A321231

Difficulty date: March 1, 2025
Submitted: March 3, 2025
Operation: Air carrier
Aircraft: N934JB
Make and model: Airbus A321231
Aircraft serial: 06130
Aircraft time: 42,789 hours, 8,334 cycles
System (JASC): 3350 · Emergency Lighting
Part: Power Supply
Condition: No Test
Location: Zone 200
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

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

What was found

DURING HEAVY MAINTENANCE: DURING OPERATIONAL CHECK OF EMERGENCY LIGHTING 11WL, 12WL, 13WL, AND 14WL FAILED; REF STS WO W003701 NR N0520 PERFORMED TEACH IN PROCEDURE FOR 11WL, 13WL, 14WL IAW AMM 33-51-00-820-801-A REMOVED AND REPLACED EPSU IAW AMM 33-51-38-00-001-A AND 33-51-38-400-001-A ALL EPSU OPS CHECK GOOD IAW AMM 33-51-00-710-001-A.

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