# SDR X3TR201712110001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2017
- Submitted: December 12, 2017
- Operation: General aviation
- Filed by: [Curtiss-Wright DS Inc, repair station X3TR865J](https://openairdocs.org/faa-repair-station/X3TR865J/curtiss-wright-ds-inc.md) (OpenAirDocs)
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 33011
- Part serial: 5479
- Condition: Out Of Adjust
- Location: Cargo Bay
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/X3TR201712110001

## Discrepancy

THE SMOKE DETECTOR WAS RECEIVED AT OUR REPAIR FACILITY FOR RETROFIT FROM P/N 3301-1 TO P/N 3301-21. DURING THE RETROFIT PROCESS AN INCOMING TEST WAS PERFORMED AND THE DETECTOR DID NOT MEET THE OEM (FACTORY)REQUIREMENTS OF ALARM SETTING: 96.5 +/- 1% TRANSMISSIBILITY, THE UNIT RESULT OF THE ALARM TEST WAS 93.0%. CURTISS-WRIGHT HAS DETERMINED THIS IS NOT A SAFETY ISSUE AS THE UNIT MEETS FAA TSO TYPE II REQUIREMENTS OF ALARM LEVEL OF 60%-96% LIGHT TRANSMISSION/FOOT.

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