# SDR 20001108SH034

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2000
- Submitted: November 8, 2000
- Operation: General aviation
- Aircraft: [N7899N](https://openairdocs.org/aircraft/N7899N), registered now
- Make and model: Cessna R172E
- Registry model: [Cessna R172E](https://openairdocs.org/model/cessna-r172e) (OpenAirDocs)
- Aircraft serial: R1720290
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Flap
- Part number: 052390138
- Condition: Destroyed
- Location: Rt Inboard
- Part time: 13,495 hours
- Component: Rib Assembly
- Component part number: 05239018
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20001108SH034

## Discrepancy

AIR LOADS MOVED THE RIGHT FLAP OUTBOARD SO THAT, WHEN RETRACTED, THE INBOARD RIB ASSY - FLAP SUPPORT ARM LEFT, P/N 0523901-8, WAS BLOCKED BY THE FLAP TRACK SUPPORT STRUCTURE.  BOTH FLAP SUPPORT ARMS WERE BENT BACKWARD BY THE FORCE OF THE FLAP MOTOR, FINALLY JAMMING AT ABOUT FIVE DEGREES DOWN.  SUBMITTER RECOMMENDED INSTALLATION OF CESSNA SERVICE KIT SK180-44-1.  (X)

---
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.