# SDR UALA2011080804103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2011
- Submitted: September 6, 2011
- Operation: Air carrier
- Aircraft: [N219UA](https://openairdocs.org/aircraft/N219UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30551
- Aircraft time: 44,326 hours, 5,442 cycles
- Engine: Pwa PW40903
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Tube
- Condition: Faulty
- Location: Smoke Detector
- 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/UALA2011080804103

## Discrepancy

DET ZONE 1 CARGO AFT AFT CARGO COMPARTMENT SMOKE DETECTOR ZONE FAILURE.  STATUS MSG01- ACTIVE CRUISE HARD; CARGO SMOKE DETECTOR TUBE 1 (LWR AFT) AIRFLOW IS LOW.  DB- CARGO SMOKE DETECTOR CH 2 (LWR AFT) ITEM CNX PER PLF SHOWS NOT ACTIVE MSG-2621062 ACTIVE ER HARD.  BLOW N2 TO TUBE 1 FROM DETECTOR SIDE.  AFTER RECONNECTING THE TUBE.  THE MSG IS DISAPPEARED.  PERFORM GRD TEST, PASSED.

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