# NTSB MIA92LA120: Beech C35, N657D, Scottsmoor, FL, April 29, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 29, 1992, 13:00 local (17:00 UTC)
- Place: Scottsmoor, FL
- Location: 28.7680° N, 80.8710° W: Placed by OpenAirDocs: center of Scottsmoor, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=28.7680&lon=-80.8710&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 13, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 33088
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA92LA120
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33088/pdf
- Page: https://openairdocs.org/ntsb/MIA92LA120

## Probable cause

ENCOUNTER WITH CLEAR AIR TURBULENCE DURING CRUISE FLIGHT.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight encounter with weather, cruise - normal
  - weather condition - turbulence,clear air (cause)

## Analysis

DURING CRUISE FLT, THE ACFT ENCOUNTERED CLEAR AIR TURBULENCE & WAS SUBSTANTIALLY DAMAGED.  THE FLT CONTINUED TO THE DESTINATION & AN UNEVENTFUL LANDING OCCURRED.  APRX 3 MONTHS EARLIER, THE RUDDERVATORS WERE REMOVED, REPAIRED, PAINTED, BALANCED, & REINSTALLED.  FOLLOWING THE ACCIDENT, THE RUDDERVATORS WERE REMOVED & FOUND TO BE WITHIN PRESCRIBED LIMITS REGARDING BALANCING PER THE BEECHCRAFT MANUAL.

## Aircraft

- Registration: [N657D](https://openairdocs.org/deregistered/N657D-2018-01-25), registration cancelled 2018-01-25, S/N D-2925, built 1951 (OpenAirDocs)
- Reported make and model: BEECH C35
- Registry model: [Beech C35](https://openairdocs.org/model/beech-c35) (registry code 1151508) (OpenAirDocs)
- Registry engine: [Continental E185 series](https://openairdocs.org/engine/continental-e185-series) (registry code 17014, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: D2925
- Airframe hours: 6600
- Engines: CONTINENTAL E-185-11 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Dennison, Danny G.
- Registered owner: Dennison, Danny G.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 2, 2000, 10 hours before
- Departed: 09J, JEKYLL ISLAND, GA
- Destination: FPR, FORT PIERCE, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 653 total, 290 in this make and model, 483 as pilot in command, 24 in the last 90 days, 13 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 24 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 82 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19920429015639A](https://openairdocs.org/incident/19920429015639A), Apr 29, 1992: Beech 35BEECH, Scottsmoor, FL, Substantial damage. Encountered clear air turbulence then ruddervator flutter. Landed safe. Fuselage near v tail wrinkled. Rivets loose

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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