SDR USAA2013061300001

Service difficulty report · Power Supply · Boeing 7572B7

Difficulty date: June 12, 2013
Submitted: June 13, 2013
Operation: Air carrier
Aircraft: N936UW
Make and model: Boeing 7572B7
Aircraft serial: 27244
Aircraft time: 61,991 hours, 24,583 cycles
System (JASC): 3350 · Emergency Lighting
Part: Power Supply
Part number: 20121
Part serial: 3183
Condition: Failed
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

C4 CHECK - THE FOLLOWING EMERGENCY LIGHTS FAILED THE OPS CHECK: AISLE LIGHTS AT ROW 1 RT, ROW 3 RT, ROW 4 LT, ROW 11 RT, ROW 13 LT, 17 LT, ROW 8 RT & ROW 25 RT, R1 DOOR SLIDE LIGHT & R2 & L2 DOOR SLIDE LIGHT. COMPLETED TROUBLESHOOTING OF EMERGENCY LIGHTS & FOUND DEFECTIVE BATTERY POWER SUPPLY M730. REPLACED BATTERY POWER SUPPLY M730 IAW WDM 33-51-21 & 33-51-07. OPS CHECK GOOD.

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