# SDR UIEA2020092302053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2020
- Submitted: October 5, 2020
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 108,024 hours, 21,428 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Ecu
- Part number: 211734220
- Part serial: 83322
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020092302053

## Discrepancy

NO DUCT PRESSURE FROM APU.  TRANSFERED TO MDDR 134869, DDG 49-11-01-01, CAT C.  PERFORM FIM TASK 49-11 FT 981 UP TO BLOCK 26, NO DUCT LEAK NOTED AND NO DEFECTS NOTED.  STANDBY C-72L/11R DYBY W 10L/9R DUCT PRESSURE WITHIN 2 PSI.  REMOVED AND REPLACED APU CONTROL UNIT (ECU), IAW AMM 49-61-05.  REACTIVATED APU SHUT OFF VALVE.  PERFORMED ENGINE RUN.  OPS CHECK DUCT PRESS WITH BOTH PACS ON, IAW AMM 49-11-00, OPS CHECK IS NORMAL AT THIS TIME.  ENG RUN PER AMM 71-00-00.  PLACARDS REMOVED.  THIS CLOSES DMI 134869.

---
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.