# SDR UALA2013021200848

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2013
- Submitted: February 14, 2013
- Operation: Air carrier
- Aircraft: [N774UA](https://openairdocs.org/aircraft/N774UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26936
- Aircraft time: 69,354 hours, 13,005 cycles
- Engine: Pwa PW4077
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Igniter
- Condition: Faulty
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013021200848

## Discrepancy

APU START SYS STATUS MSG.  MX MSG 49-10690 IGNITION CLUSTER HIGH VOLTAGE CIRCUIT IS OPEN.  DF PER MEL. INF-  :REF: FIM 49-40 & PERFORM TASK 805.  RPL NR 2 IGNITOR PLUG REF AMM, ALSO REPLACED IGNITION UNIT AS PRECAUTIONARY & NR 1 IGNITION LEAD, STARTED APU 3 TIMES.  NO MESSAGES PRESENT.  START NORMAL.

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