# SDR DL76L000720

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2000
- Submitted: April 19, 2000
- Operation: Air carrier
- Aircraft: [N179DN](https://openairdocs.org/aircraft/N179DN), registered now
- Make and model: Boeing 767332
- Aircraft serial: 25144
- Aircraft time: 44,552 hours, 6,723 cycles
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Proximity Switch
- Part number: 834403
- Part serial: 35581
- Condition: Malfunctioned
- Location: Rt Wing
- Stage of operation: CR
- 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/DL76L000720

## Discrepancy

AIR TURNBACK, HAD MASTER CAUTION WARNING WITH L/E SLAT ASSY LIGHT ON EICAS AND L/E LT.  BOTH FLAP NEEDLES MOVED UP TO THE 1/2 DETENT MARK.  PSEU BIOTE FAULTED S301. FSEU BITE NO FAULTS.  REPLACED S301 PER MM.  TARGET GAP OK.  OPERATED FLAPS/SLATS ALL NORMAL.

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