# SDR DL76G070072

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2007
- Submitted: February 6, 2007
- Operation: Air carrier
- Aircraft: [N174DZ](https://openairdocs.org/aircraft/N174DZ), registered now
- Make and model: Boeing 767332
- Aircraft serial: 29693
- Aircraft time: 26,278 hours, 11,134 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Module
- Condition: Malfunctioned
- Location: Control Panel
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL76G070072

## Discrepancy

FIRE WARNING HORN SOUNDED/AURALLY ALERTED IMMEDIATELY ON LIFT OFF.  NO LIGHTS EICAS MESSAGES O ANY INDICATIONS AT ALL WERE APPARENT.  THE HORN SOUNDED UNTIL LANDED AND TAXIED BACK.  PULLED J34 AND B18 WARN ELEX CBS.  HORN SILENCED WHEN B18 PULLED.  LANDING WEIGHT 319.9.  NO OVERWEIGHT LANDING.  REMOVED AND REPLACED PWR SUPPLY MODULE B AND ENG/CARGO FIRE TEST PANEL.  ALL OPS CHK NML.  TEST OPS NML FIRE WARNING SHUTS DOWN.

---
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.