# SDR UIE2003F00001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2003
- Submitted: October 15, 2003
- Operation: Air carrier
- Aircraft: N524MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21784
- Engine: Ge CF650E2
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Warning System
- Condition: Malfunctioned
- Location: Te Flaps
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIE2003F00001

## Discrepancy

DURING TAKEOFF AT APPROXIMATELY 75 KNOTS, PILOTS LEADING EDGE FLAP INDICATED UNSAFE WITH F/E LT WING PANEL LEADING EDGE FLAP INDICATORS ALSO INDICATING UNSAFE.  NO WARNING HORN WAS HEARD AT ANY TIME DURING TAKEOFF.  VISUALLY AND MANUALLY CHECKED ALL LEFT WING PDU`S AND CONNECTORS.  OPERATIONALLY CHECKED FLAPS IN PRIMARY AND ALTERNATE MODES IAW MM 27-81-03. ALL INDICATIONS AND FUNCTIONS NORMAL.

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