# SDR 2006UALA01789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2006
- Submitted: September 26, 2006
- Operation: Air carrier
- Aircraft: [N223UA](https://openairdocs.org/aircraft/N223UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30224
- Aircraft time: 20,010 hours, 2,706 cycles
- Engine: Pwa PW4090
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Malfunctioned
- Location: Cargo Bay
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006UALA01789

## Discrepancy

AT DEPARTURE, EICAS MSG APPEARED, CREW REST LOWER CH2 SMOKE DETECTOR.  REMAINING CH1 OPS OK--AND BOTH AFT CARGO COMP SMOKE DETECTORS OPERATE NORMALLY.    REINSTALLED ORIGINAL SMOKE DETECTOR IN FWD CARGO PIT.   REPLACED AFT CARGO SMOKE DETECTOR. GROUND SYSTEM TEST PASSED. NO EICAS MSG'S. OK FOR SERVICE

---
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.