# SDR UPS01235785

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2001
- Submitted: May 4, 2001
- Operation: Air carrier
- Aircraft: [N904UP](https://openairdocs.org/aircraft/N904UP), registered now
- Make and model: Boeing 727-51C
- Registry model: [Boeing 727-51C](https://openairdocs.org/model/boeing-727-51c) (OpenAirDocs)
- Aircraft serial: 18946
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Warning System
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS01235785

## Discrepancy

COMPT SHOWS-TD DELAY FOR FIRE WARNING BELL INDICATOR INOP COCKPIT FIRE BELL WILL NOT SOUND WITH THE ENG FIRE DETECTION PANEL TEST SWITCH IN A,B,OR A/B THIS APPLIES TO ACTUATING EITHER THE ENG TEST SWITCH OR WHEEL WELL TEST SWITCH.     CLEANED AND RESECURED WIRING AT TB 224 56 AND 57.  TEST VOLTAGE, OK SYSTEM OK PER 26-11-02.

---
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.