SDR UIEA2016051600297

Service difficulty report · Power Supply · Boeing 747481

Difficulty date: May 15, 2016
Submitted: May 16, 2016
Operation: Air carrier
Aircraft: N322SG
Make and model: Boeing 747481
Aircraft serial: 30322
Aircraft time: 42,368 hours, 5,631 cycles
System (JASC): 3350 · Emergency Lighting
Part: Power Supply
Part number: 20131A
Part serial: 107768
Condition: Inoperative
Location: Cabin
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

FOUND L1, R2, L5 DOOR EMER EXIT SIGNS INOPERABLE. IAW AMM 33-51-04-002-009-001, 33-51-04-402-012-001 REV 86, REPLACED M7915, M7923 POWER SUPPLY. IAW AMM 33-51-04-402-012-001 REV 86, PFM TEST OF THE POWER SUPPLY & THE RESULT WAS SATISFACTORY.