SDR UIEA2020092212039

Service difficulty report · Pneumatic System · Boeing 76731K

Difficulty date: September 18, 2020
Submitted: September 22, 2020
Operation: Air carrier
Aircraft: N1489A
Make and model: Boeing 76731K
Aircraft serial: 27206
Aircraft time: 107,982 hours, 21,415 cycles
System (JASC): 4950 · APU Bleed Air System
Part: Pneumatic System
Condition: Malfunctioned
Location: Apu
Stage of operation: IN
How discovered: 9
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

APU AIR PNEUMATIC FUNCTION INOP AUXILIARY POWER UNIT, PNEUMATIC FUNCTION. DEFERRED IAW DDG 49-11-01-01 MDDR 134624, CAT C, DISPATCH 0712Z JJT. PERFORMED OPS CHECK OF APU PNEUMATICS, IAW AMM 49-11-00, OPS CHECK GOOD. PERFORMED BITE OF ECU, NO PREVIOUS FAULTS FOUND. ALL OPS NORMAL. THIS CLEARS DMI 134624, MCC NOTIFIED, PLACARDS REMOVED. PERFORMED BITE OF ECU, IAW FIM 49-11 FT 958 DISPATCH-JL @ 1449Z.

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