# SDR CALA2009051400251

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2009
- Submitted: May 14, 2009
- Operation: Air carrier
- Aircraft: [N54711](https://openairdocs.org/aircraft/N54711), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28782
- Aircraft time: 36,045 hours, 11,753 cycles
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Switch
- Part number: 106122629
- Condition: Failed
- Location: Le Flap
- Stage of operation: LD
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2009051400251

## Discrepancy

DURING APPROACH FLAP 1 SELECTED L/E FLAP TRANSIT LT ILLUMINATED ON AND OFF.  FOLLOWED QRH PROCEDURES LANDED AT FLAP 15 STILL HAD L/E FLAP TRANSIT ON FORWARD PANEL ILLUMINATE APPROACH SPEED WAS 149 KTS LANDING NORMAL.  PERFORMED TROUBLESHOOTING PER FIM 27-88-00-810-805 FOUND NR 4 FLAP RETRACT SWITCH AT FAULT R& R''D PER MM 27-88-00 BITE & AMP; OPS CHECK GOOD REF ER TO L/P 8131226 FLAP OVERSPEED INSPECTION.

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