# SDR UIEA2021030500476

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2021
- Submitted: March 5, 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: 92,560 hours, 19,716 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Warning Message
- Condition: False Activation
- Location: Apu
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021030500476

## Discrepancy

APU "ALTN CONT" AND ENG START/ECS DISCRETES CB'S POPPED IN FLT. NO EICAS OR STATUS MSG. RESET C/B'S, PERFORMED APU BITE CK IAW FIM 49-11 F/T 958. NO FAULTS FOUND. PERFORMED 2 APU GROUND STARTS AND APU STARTS NORMAL. ACCOMPLISHED 2 ENG GROUND DRY MOTORS, IAW B767 AMM 71-00-00. APU AIR AND START VALVES OPS CK GOOD. NO DEFECTS NOTED.

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