# SDR DHL2005770009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2005
- Submitted: January 3, 2006
- Operation: Air carrier
- Aircraft: N770AT
- Make and model: Boeing 727-2B7
- Registry model: [Boeing 727-2B7](https://openairdocs.org/model/boeing-727-2b7) (OpenAirDocs)
- Aircraft serial: 21953
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Switch
- Part number: H1010261
- Part serial: E1859
- Condition: Inoperative
- Location: K Flaps
- Stage of operation: AP
- How discovered: O
- Nature of condition: F
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2005770009

## Discrepancy

DURING FLAP EXTENSION, NR 4 KRUEGER FLAP FAILED TO EXTEND.  COMPLETED ABNORMAL PROCEDURE AND LANDED.  ON SHORT FINAL NR 4 KRUEGER FLAP EXTENDED.  REMOVED AND REPLACED NR 4 L/E FLAP POSITION SWITCH, OPS CK NORMAL IAW B727 M/M 27-82-01 AND 27-82-00.

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