# SDR CALA2014042190890

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2014
- Submitted: April 21, 2014
- Operation: Air carrier
- Aircraft: N119UA
- Make and model: Boeing 747422
- Aircraft serial: 28812
- Aircraft time: 62,427 hours, 7,150 cycles
- Engine: Pwa PW4056
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Warning
- Condition: False Activation
- Location: Cockpit
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014042190890

## Discrepancy

ENG 1 FIRE LOOP B STATUS MSG DISPLAYED ON EICAS.  MX MSG 26021, CMC GND TEST WOULD NOT RESET STATUS MSG.  IAW FIM 26-11 TASK 852, ENG 1 FIRE WARNING DETECTION CARD LOOP RESISTANCE CHECK WITHIN LIMIT, 1.512 KOHM, FOR PRECAUTION DETECTION CARD.  REPLACED IAW MM 26-10-01 & CMC GND TEST PASSED, NO MSG FOUND.

---
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.