SDR ASAA2023031042307

Service difficulty report · Power Supply · Boeing 737900ER

Difficulty date: March 10, 2023
Submitted: March 13, 2023
Operation: Air carrier
Aircraft: N403AS
Make and model: Boeing 737900ER
Aircraft serial: 41730
Aircraft time: 38,421 hours, 12,264 cycles
System (JASC): 3350 · Emergency Lighting
Part: Power Supply
Part number: D71702001
Condition: Failed
Location: Mid 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

REF TC 78233001 - R AFT OVERWING ESCAPE LT, & AISLE LTS L1507, L1513, & L1517 FAIL CAPACITY CHECK - EMERGENCY BATTERY. GROUNDED - YES. REPLACED EMERGENCY EXIT POWER SUPPLY M1671 WITH SERVICEABLE UNIT OPS CHECKS OK. REF B737-900 AMM 33-51-06-960-806.

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