# SDR SWAA2026032682393

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2026
- Submitted: March 26, 2026
- Operation: Air carrier
- Aircraft: [N924WN](https://openairdocs.org/aircraft/N924WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36628
- Aircraft time: 57,106 hours, 34,695 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Clamp
- Condition: Loose
- Location: Duct
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026032682393

## Discrepancy

LEFT WING BODY OVERHEAT LIGHT ILLUMINATED PASSING FL260 ON CLIMBOUT<[01] INSPECTED FOR LEAKS; NONE FOUND. OK TO CONTINUE PER MEL 26-12-01 SP1 AUTH# 311416.;[02] TROUBLESHOT AND FOUND WIGGINS CLAMP FROM NGS HEAT EXCHANGER MISSING. FOUND ASM INSULATION BURNED AND MISSING FROM ASM. SUSPECT OPEN DUCT BURNED INSULATION FROM ASM AND CAUSED WING TO BODY OVERHEAT TO OCCUR;[03] REMOVED AND REPLACED WIGGINS CLAMP ON NGS HEAT EXCHANGER AND NGS ASM REF AMM 47-11-01. OPS CHECKS GOOD NO LEAKS NOTED

---
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.