SDR ASAA2013012193717

Service difficulty report · Buss · Boeing 737890

Difficulty date: January 21, 2013
Submitted: January 24, 2013
Operation: Air carrier
Aircraft: N583AS
Make and model: Boeing 737890
Aircraft serial: 35681
Aircraft time: 20,975 hours, 6,265 cycles
System (JASC): 2450 · AC Power Distribution System
Part: Buss
Condition: Malfunctioned
Location: Apu
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

STARTED APU ON LANDING ATTEMPTED TO BRING APU ELECTRICAL POWER ON BUSSES AND WOULD NOT HOLD AFTER 2ND BUSS ATTEMPTED ON TWO ATTEMPTS, ATTEMPTED TO PROVIDE APU BLEED AIR AT GATE ALSO AND THERE WAS ZERO APU BLEED DUCT PRESSURE. APU BITE PROCEDURE AMM TASK 49-60-801, FAULT 49-31171 INDICATED, PAGE 6 OF 16 49-60, TASK 801 LED TO TASK 49-31, TASK 808 PERFORMED FIM TASK 49-31-808A. -F 910 10 APU OPS NORMAL - ACCEPTS ALL BLEED AIR LOADS AND ELECTRICAL LOADS, INSPECTION OF TAIL PIPE PERFORMED.