# NTSB CHI88DEX05: Beech V35A, N7892R, Seymour, IN, June 23, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 22, 1988, 22:30 local (Jun 23, 1988, 03:30 UTC)
- Place: Seymour, IN
- Coordinates: 38.950298, -85.880859 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9503&lon=-85.8809&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 11, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 13913
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI88DEX05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13913/pdf
- Page: https://openairdocs.org/ntsb/CHI88DEX05

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - engine assembly,valve,exhaust - failure,total (cause)
  - engine assembly,cylinder - cracked
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - wheels up landing - intentional (contributing factor)

## Analysis

AIRCRAFT WAS IN CRUISE FLIGHT AT 6500 FEET WHEN ENGINE BEGAN TO RUN ROUGH. PILOT NAVIGATED TO NEAREST AIRPORT AND MADE INTENTIONAL GEAR-UP LANDING WITH CRUISE POWER. POSTCRASH INVESTIGATION REVEALED NUMBER 2 EXHAUST VALVE HAD FAILED AND BECOME WEDGED BETWEEN THE CYLINDER AND PISTON TOP, CRACKING THE CYLINDER HEAD AT THE BARREL THREADS.

## Aircraft

- Registration: [N7892R](https://openairdocs.org/aircraft/N7892R), registered now, S/N D-8944, built 1969 (OpenAirDocs)
- Reported make and model: BEECH V35A
- Registry model: [Beech V35A](https://openairdocs.org/model/beech-v35a) (registry code 1151544) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: D8944
- Airframe hours: 2313
- Engines: CONTINENTAL IO-520-BA 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: John R. Martins
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, January 3, 1988, 149 hours before
- Departed: DKX, KNOXVILLE, TN
- Destination: 3CK, CHICAGO, IL
- Flight plan: VFR
- Airport: SER, Freeman Muni, runway 4, 5,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,630 total, 540 in this make and model, 1,875 as pilot in command, 163 in the last 90 days, 49 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 75 °F
- Altimeter: 29.00 inHg

## 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 19880622022749A](https://openairdocs.org/incident/19880622022749A), Jun 22, 1988: Beech V35A, Seymour, IN, Substantial damage. Landed gear up. Plane slid 1700 feet on rwy on its belly. Pilot had turned base indicating 160 knots. Much too fast.

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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