# SDR 2005FA0000920

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2005
- Submitted: June 30, 2005
- Operation: General aviation
- Aircraft: [N81SK](https://openairdocs.org/aircraft/N81SK), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE81
- Engine: Pwa PT6*
- System (JASC): [2752 · Trailing Edge Flap Actuator](https://openairdocs.org/jasc/2752)
- Part: Drive Assy
- Part number: 503801534
- Condition: Sheared
- Location: Flap Actuator
- Part time: 17,610 hours
- Component: Actuator, Raythn
- Component part number: 1295210502
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0000920

## Discrepancy

RT IB FLAP ACTUATOR WOULD NOT ACTUATE.  UPON TEARDOWN INSPECTION DISCOVERED THE 90 DEGREE DRIVE ASSEMBLY, FLAP CABLE CONNECTOR COUPLING HAD SHEARED THE ROLL PIN THAT CONNECTS THE COUPLING TO A DRIVE GEAR.  THIS 90 DEGREE DRIVE ASSEMBLY HAS NO FIELD MAINTENANCE REQUIREMENTS BEYOND LUBING AND CHECKING GEAR FREEPLAY.  THIS PART IS NOT ALLOWED TO BE REPAIRED IN THE FIELD AND NO INSTRUCTIONS TO INSPECT THE SHEAR PINS.  THE FLAP ACTUATOR WAS LAST EACH 10,000 CYCLE INSPECTED 9/04.  (K)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.