# SDR 98ZZZX4594

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N782WW](https://openairdocs.org/aircraft/N782WW), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280295
- System (JASC): [5520 · Elevator Structure](https://openairdocs.org/jasc/5520)
- Part: Nutplate
- Part number: MS210783
- Condition: Separated
- Location: Elevator
- Part time: 790 hours
- Component: 05121651
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX4594

## Discrepancy

A PRE-FLIGHT REVEALED ELEVATOR WAS NOT HITTING DOWN STOP.  FURTHER INSPECTION REVEALED DOWN STOP BOLT WAS PUSHED IN.  DISASSEMBLY REVEALED MS21078-3 NUTPLATE IS A TWO-PIECE PRESSED NUTPLATE THAT CAN BE DISLODGED WITH REPEATED HITTING.  OTHER AIRCRAFT OF 172R THAT HAVE BEEN INSPECTED USE THIS NUTPLATE.  THE PROBLEM OF ORDERING NUTPLATES IS THAT MS21078-3 NUTPLATES ORDERED FROM CESSNA ARE PRESSED IN TYPE.  ANOTHER MS21078-3 NUTPLATE ORDER FROM AIRCRAFT VENDOR IS NOT PRESSED IN TYPE.  THE SOLID MS21078-3 WAS INSTALLED AS REPLACEMENT.

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