# SDR AWXA0000042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N509AW](https://openairdocs.org/aircraft/N509AW), registered now
- Make and model: Boeing 737-33A
- Registry model: [Boeing 737-33A](https://openairdocs.org/model/boeing-737-33a) (OpenAirDocs)
- Aircraft serial: 23636
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Accessory Unit
- Part number: 65528087M0DD
- Condition: Failed
- Location: E/E Bay
- Part time: 27,783 hours
- Stage of operation: TO
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA0000042

## Discrepancy

AIR-TURNBACK, WING-TO-BODY OVERHEAT LIGHT ILLUMINATED IN FLIGHT AND FLICKERED ON TAKEOFF, WENT OUT UPON RETURN TO PHX. REMOVED AND REPLACED COMPARTMENT OVERHEAT M237 UNIT.  OPS CHECK GOOD.  A/C HAD EXACT MALFUNCTION (INFO ONLY), QRH PROCEDURES WERE FOLLOWED UNTIL APU WAS SHUT-DOWN AND SYSTEM WAS RESTORED.

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