# SDR 9WGA2021091354201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2021
- Submitted: September 13, 2021
- Operation: Air carrier
- Aircraft: [N542KD](https://openairdocs.org/aircraft/N542KD), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48542
- Aircraft time: 72,312 hours, 14,608 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Fuel Sys
- Condition: Faulted
- Location: Left
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9WGA2021091354201

## Discrepancy

AIR TURN BACK DUE TO AUX UPPER L MALFUNCTION. FUEL TRAPPED ON UPPER AUX. STARTED WORKING AFTER LANDING.

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