# SDR AALA201810029033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2018
- Submitted: October 3, 2018
- Operation: Air carrier
- Aircraft: [N981AN](https://openairdocs.org/aircraft/N981AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29569
- Aircraft time: 30,283 hours, 11,889 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Overheat Sensor
- Part number: 3571280
- Condition: Defective
- Location: Lt Wing
- Stage of operation: CL
- How discovered: V
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201810029033

## Discrepancy

LEFT WING BODY OVERHEAT ILLUMINATED RIGHT AFTER TAKE OFF, REPEAT WRITE-UP. AFTER TURNING LEFT BLEED AND PACK OFF, LEFT WING BODY OVERHEAT LIGHT EXTINGUISHED.   AN EMERGENCY WAS DECLARED, RETURNED TO DEPARTURE, AND LANDED WITHOUT FURTHER INCIDENT.  THE AIRCRAFT WAS GROUNDED.  ACCOMPLISHED REPLACEMENT OF THE PACK OVERHEAT DETECTORS (M355 AND M1909). TROUBLESHOOTING THE LEFT PACK WIRING IAW FIM 26-18-00-810-802.   OPS CHECKED NORMAL..

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