# SDR CALA2011120700797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2011
- Submitted: December 7, 2011
- Operation: Air carrier
- Aircraft: [N21108](https://openairdocs.org/aircraft/N21108), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27298
- Aircraft time: 65,128 hours, 17,314 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Fseu
- Part number: 285N001140
- Part serial: 3330
- Condition: Faulty
- Location: Nr 2
- Part time: 20,314 hours, 5,789 cycles
- Stage of operation: LD
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2011120700797

## Discrepancy

L/E SLAT ASYM EICAS LIGHT CAME ON ON APPROACH WHILE SLOWING FROM 250K TO 220K.  AT 220K WITHOUT MOVING ANY SLAT/FLAP CONTROLS THE LIGHT ILLUMINATED.  FOLLOWED QRH PROCEDURE.  T/S IAW FIM 27-81-00-815-804.  FOUND FAULT CODE 317 ON FSEU NR 1 AND FAULT CODE 337 ON FSEU NR 2.  PER FIM T/S TO BAD GROUND FROM FSEU NR 2.  REPLACED FSEU NR 2 IAW AMM 27-51-01-722-005.  ALL OPS CHECKS PASS W/ NO FAULTS NOTED, EICAS MSG CLEARED FAULT LIGHT EXTINGUISHED.  NO FURTHER DEFECTS NOTED, OK TO CONTINUE. ROTABLE PARTS CHANGE WAS INDICATED - TT 1486557  SN OFF 03330.  FSEU NR 1: 317 FAULT CODE, FSEU NR 2: 337 FAULT COMMENTS : REF FIM 27-81-00-815-804 UNIT, FLAP AND SL OFF 19-2758-9-0002 3330 ON 19-2758-9-0002 2671 DECLARED EMERGENCY LANDING.

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