# SDR UIEA2021032100667

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N640GT](https://openairdocs.org/aircraft/N640GT), registered now
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 25221
- Aircraft time: 92,356 hours, 19,742 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Apu
- Condition: Malfunctioned
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021032100667

## Discrepancy

AFTER  4 ATTEMPTS APU WILL NOT START.     REACHES  25%  777 EGT,  OIL QTY  75%(<P>PERFORMED APU BITE TEST PER 767 FIM TASK 49-11 FAULT TREE 958.</P><P>NO DISCREPANCY NOTED, APU  OPERATING  AT  NORMAL CONDITIONS.</P>)

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