# SDR ASAA2019040128825

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2019
- Submitted: April 1, 2019
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 47,342 hours, 14,221 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Sensor
- Part number: 3571275
- Condition: Corroded
- Location: Overheat
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019040128825

## Discrepancy

CLIMB OUT, 25,000 FT #2 WING BODY OVERHEAT LIGHT DID QRH LIGHT REMAINED ILLUMINATED. GROUNDED - YES. DIVERSION TIME 42 MINUTES - FOUND NO ACTIVE FAULTS RECORDED ON THE CODCU. VISUALLY INSPECTED THE ELEMENTS ASSOCIATED WITH FAULT 64 (FROM T/S ENTRY), AND FOUND M1764 VERY CORRODED. REPLACED ELEMENT M1764 PER B737-800 AMM 26-18-02/401. OP-CHECKS GOOD PER SAME. NOTE: THE REMOVED M1764 ELEMENT HAD A 1M OHM SHORT FROM INNER TO OUTER SECTIONS, WHICH FLUCTUATED WITH ANY MOVEMENT OF THE ELEMENT. THIS CLEARS MEL 26-13B.

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