SDR UIEA2021030100431

Service difficulty report · Apu · Boeing 767375

Difficulty date: February 23, 2021
Submitted: March 1, 2021
Operation: Air carrier
Aircraft: N649GT
Make and model: Boeing 767375
Aircraft serial: 25864
Aircraft time: 92,486 hours, 23,664 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Apu
Condition: Malfunctioned
Stage of operation: CR
How discovered: O
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 COLD START ATTEMPT -47C, FL 380, 3 START ATTEMPTS, 3 START FAILS, EGT 0 22 RPM(<P>PERFORMED APU BITE PER FIM 49-11 FT 958, MINI FLAG 34; LRU - "NO LIGHT OFF". RESET CLEARED, PERFORMED SUCCESSFUL GROUND START PER AMM 49-11-00. ECU SUMMARY- A/C START CIRCUIT.</P>)