# SDR UALA2011110906126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2011
- Submitted: November 30, 2011
- Operation: Air carrier
- Aircraft: [N122UA](https://openairdocs.org/aircraft/N122UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29168
- Aircraft time: 51,302 hours, 6,107 cycles
- Engine: Pwa PW4056
- System (JASC): [2621 · Fire Bottle, Fixed](https://openairdocs.org/jasc/2621)
- Part: Squib
- Condition: Faulty
- Location: Nr 4 Engine
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011110906126

## Discrepancy

DURING TEST ON JOB8-8401 FIRE EXT BOTTLE SQUIB CHECK, ON STEP 12 TEST2 ENG 4 SQUIB LIGHT DID NOT COME ON.  REPLACED NR 4, SYS 'B' SQUIB PER MM.

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