SDR UIEA2020050600948

Service difficulty report · Unknown · Boeing 7673Y0

Difficulty date: May 5, 2020
Submitted: May 8, 2020
Operation: Air carrier
Aircraft: N1181A
Make and model: Boeing 7673Y0
Aircraft serial: 26206
Aircraft time: 87,705 hours, 21,944 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Unknown
Condition: Malfunctioned
Location: Apu
Stage of operation: TX
How discovered: C
Nature of condition: O
Precautionary procedure: O

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

What was found

APU FAILED AND SHUTDOWN BEFORE ENG START(<P>PLACED ON MDDR 127985 PER MEL 49-11-01A, CAT 'C'.</P><P>08MAY20, BWI LP 1150050, ITEM M5: PERF APU BITE IAW FIM 49-11 FT 958. FOUND NO FAULTS. APU OPERATING NORMAL AND STARTING PARAMETERS SHOW NO SIGNS OF A BAD START. THIS CLEARS DMI 127985. DP @ 16:05Z.</P>)

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