# SDR 98ZZZX1539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N98QS
- Make and model: Cessna S550
- Registry model: [Cessna S550](https://openairdocs.org/model/cessna-s550) (OpenAirDocs)
- Aircraft serial: S5500098
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Switch
- Part number: 602EN166
- Condition: Shorted
- Location: Lt Flap Limit
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX1539

## Discrepancy

PILOT REPORTED FLAP CONTROL CIRCUIT BREAKER TRIPPED WHEN FLAPS SELECTED UP.  C/B WOULD NOT RESET.  MAINTENANCE FOUND FLAP LIMIT SWITCH ON LT FLAP ACTUATOR INTERNALLY SHORTED TO GROUND.  INSTALLED NEW SWITCH, P/N 602EN16-6, AND ADJUSTED AND SAFETIED IAW CESSNA S550 MM.  PERFORMED OPERATIONAL CHECK OF FLAP SYSTEM AFTER RESETTING C/B, NO DEFECTS.  FLAP SYSTEM NOW OPERATING NORMALLY.  REF:  CESSNA CITATION S550 MM CH 27-51-OU FOR REMOVAL AND REPLACEMENT PROCEDURES OF SWITCH.   SUSPECT HIGH TIME PART LED TO FAILURE.

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