# SDR CALA2026072317961

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2026
- Submitted: July 23, 2026
- Operation: Air carrier
- Aircraft: [N37287](https://openairdocs.org/aircraft/N37287), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31636
- Aircraft time: 67,354 hours, 25,265 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Horn
- Condition: False Activation
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072317961

## Discrepancy

RTO AT ABOUT 100KTS FOR TO COFIG LIGHT/HORN.   ACCOMPLISHED TAKEOFF WARNING SYSTEM TEST IAW AMM 31-51-00-710-803-C2. OPS CHKD GOOD,  NO FAULTS, NO MESSAGES.  REF FIM 31-51 TASK 803 ACCOMPLISHED INITIAL EVALUATION. TAKEOFF WARNING REPORT SHOWED FAULT MESSAGE 31-53010 REF FIM TASK 32-09, TASK 812,  ACCOMPLISHED FSEU BITE TEST  PER FIM 27-51 TASK 801, TEST PASSED AND SHOWED NO FAULTS.

---
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.