# SDR CALA2026092119567

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2026
- Submitted: September 21, 2026
- Operation: Air carrier
- Aircraft: [N37422](https://openairdocs.org/aircraft/N37422), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31620
- Aircraft time: 57,433 hours, 20,539 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Control Module
- Part number: 35008307
- Part serial: 2578
- Condition: Damaged
- Location: Overheat Detect
- Part time: 48,284 hours, 17,809 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026092119567

## Discrepancy

LEFT WING BODY OVHT LIGHT AFTER TAKE OFF,  LIGHT REMAINED ON  AFTER CHECKLI ST IAW FIM 26-18 TASK 801 PERFORMED BITE OF WHEEL WELL FIRE, WING & BODY OVERHEAT DETECTION CONTROL MODULE. FOUND MAINT MSG 14 (LEFT WING LE - ALARM).   R & R WHEEL WELL FIRE WING & BODY OVERHEAT DETECTION UNIT IAW AMM 26-18-01. OPS CHKD GOOD.

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