# SDR AALA2018090429005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2018
- Submitted: September 4, 2018
- Operation: Air carrier
- Aircraft: [N833NN](https://openairdocs.org/aircraft/N833NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31093
- Aircraft time: 26,629 hours, 10,650 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7312 · Fuel Heater](https://openairdocs.org/jasc/7312)
- Part: Servo
- Condition: Leaking
- Location: Fuel Heater
- Stage of operation: DE
- 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/AALA2018090429005

## Discrepancy

CREW REPORTED FUMES IN AFT CABIN DURING FLIGHT. AT FL 220. THE AIRCRAFT WAS GROUNDED. TROUBLESHOT AND FOUND THE NR 1 ENGINE FUEL HEATER SERVO LEAKING.  REPLACED FUEL HEATER SERVO IAW AMM 73-11-07. LEAK CHECKED GOOD,  PACK RUN GOOD.  NO FUMES OF FUEL IN CABIN. OK FOR SERVICE.

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