# NTSB BFO86FA032: Beech J-35, N7266B, Myersville, MD, June 4, 1986

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: June 4, 1986, 10:36 local (14:36 UTC)
- Place: Myersville, MD
- Coordinates: 39.499008, -77.559219 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.4990&lon=-77.5592&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 11209
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO86FA032
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11209/pdf
- Page: https://openairdocs.org/ntsb/BFO86FA032

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,crankshaft - failure,total (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - flare/touchdown
  - object - fence

## Analysis

WHILE IN CRUISE FLIGHT AT 3500 FEET THE PILOT STATED HE EXPERIENCED A RAPID LOSS OF POWER. UNABLE TO RESTART THE ENGINE, HE WAS FORCED TO LAND IN A PASTURE WHICH WAS DIVIDED BY BARBED WIRE FENCES. THE AIRCRAFT COLLIDED WITH A FENCE AND CAME TO REST INVERTED. TEARDOWN EXAMINATION REVEALED THAT THE CRANKSHAFT HAD FAILED BETWEEN THE #2 CONNECTING ROD BEARING JOURNAL AND THE #2 MAIN BEARING JOURNAL. LABORATORY EXAMINATION DISCLOSED THAT THE FORWARD FRACTURE FACE OF THE UNDAMAGED AREAS HAD CHARACTERISTICS INDICATIVE OF HIGH CYCLE, LOW STRESS FATIGUE CRACK PROPAGATION.

## Aircraft

- Registration: [N7266B](https://openairdocs.org/deregistered/N7266B-1991-01-30), registration cancelled 1991-01-30, S/N D5614 (OpenAirDocs)
- Reported make and model: BEECH J-35
- Registry model: [Beech J35](https://openairdocs.org/model/beech-j35) (registry code 1151522) (OpenAirDocs)
- Category: Airplane
- Serial number: D-5614
- Airframe hours: 3619
- Engines: CONTINENTAL IO-470-C 250 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Leo M. Rishty
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Last inspection: Annual, June 20, 1985, 51 hours before
- Departed: GAI, GAITHERSBURG, MD
- Destination: HGR, HAGERSTOWN, MD

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 4,655 total, 4,130 in this make and model, 4,555 as pilot in command, 15 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: 5,000 ft broken
- Temperature: 68 °F, dew point -0 °F
- Altimeter: 30.00 inHg
- Observed at: HGR, 11 nm away

## 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 19860604031669A](https://openairdocs.org/incident/19860604031669A), Jun 4, 1986: Beech J35, Myersville, MD, Destroyed. Lost power at cruise. Struck fence landing in pasture. Flipped over. Crankshaft failed. Fatigue crack propagation.

## Other investigations on N7266B (2)

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.

- [NTSB MIA66F0317](https://openairdocs.org/ntsb/MIA66F0317), Nov 2, 1965: Beech J35 (N7266B), Ripley, MS, substantial damage
- [NTSB MKC66D0228](https://openairdocs.org/ntsb/MKC66D0228), Jul 20, 1965: Beechcraft J-35 (N7266B), Fulton, MO, substantial damage

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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