SDR UIEA2020052001091

Service difficulty report · Connector · Boeing 7673S1

Difficulty date: May 20, 2020
Submitted: May 20, 2020
Operation: Air carrier
Aircraft: N640GT
Make and model: Boeing 7673S1
Aircraft serial: 25221
Aircraft time: 90,965 hours, 19,372 cycles
System (JASC): 4997 · APU System Wiring
Part: Connector
Condition: Dirty
Location: Apu
Stage of operation: NR
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

APU FAULT, NO START(<P>TRANSFERRED TO MDDR 128562 IAW MEL 49-11-01B, CAT 'B'.</P><P>LOG PAGE 1199838: PERFORMED APU BITE PROCEDURES IAW FIM 49-11 FT 958, SH1, BLK1, SH2, BLK2,3, SH3, BLK4,25. NO FAULTS NOTED. REMOVED APU ECU, CLEANED AND INSPECTED CONNECTORS. REINSTALLED APU ECU IAW B767 AMM 49-61-05-004/404. PERFORMED APU BITE PROCEDURES IAW FIM 49-11 FT 958. NO FAULTS NOTED. APU START SUCCESSFUL. THIS CLEARS MDDR 128562.</P>)

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