# SDR UIEA2021040600841

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2021
- Submitted: April 9, 2021
- Operation: Air carrier
- Aircraft: [N649GT](https://openairdocs.org/aircraft/N649GT), registered now
- Make and model: Boeing 767375
- Aircraft serial: 25864
- Aircraft time: 92,665 hours, 23,704 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Exciter
- Part number: 388880585
- Part serial: 050218054681
- Condition: Inoperative
- Location: Apu
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021040600841

## Discrepancy

APU INOP ( AUXILIARY POWER UNIT (APU), EXCEPT ER OPERATIONS BEYOND 120 MINUTES (NOTIFY DISPATCH) R120 )(<P>TRANSFERRED TO MDDR 144881 PER MEL 49-11-01B CAT B DUE 08 APR 21</P><P>07 APR 21 LP 1335073 ITEM 2 - HHN- R AND R APU ECU BITE OK  APU STILL FAILS TO START MDDR REMAINS OPEN.</P><P><SPAN>REMOVED AND REPLACED EXCITER IAW 49-41-03</SPAN><BR DATA-MCE-BOGUS="1" /></P>)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.