# NTSB LAX88LA159: Cessna TU206G, N735SU, Coarsegold, CA, April 13, 1988

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 13, 1988, 11:30 local (18:30 UTC)
- Place: Coarsegold, CA
- Coordinates: 37.170742, -119.710914 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.1707&lon=-119.7109&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report July 21, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 25986
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX88LA159
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25986/pdf
- Page: https://openairdocs.org/ntsb/LAX88LA159

## 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,connecting rod - separation (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - rough/uneven (contributing factor)

## Analysis

WHILE AT CRUISE FLIGHT, THE ENGINE SURGED TWICE THEN QUIT. DURING THE EMERGENCY LANDING, THE AIRPLANE COLLIDED WITH THE TERRAIN. INSPECTION OF THE ENGINE REVEALED THAT THE NUMBER THREE CONNECTING ROD BROKE.

## Aircraft

- Registration: [N735SU](https://openairdocs.org/deregistered/N735SU-2002-12-11), registration cancelled 2002-12-11, S/N U20604960, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA TU206G
- Registry model: [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g) (registry code 2073357) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U20604960
- Airframe hours: 1552
- Engines: CONTINENTAL TSIO-520-M 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Massie, George T.
- Registered owner: Massie, George T.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 27, 1987, 107 hours before
- Departed: 022, COLUMBIA, CA
- Destination: L18, FALLBROOK, CA
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 999 total, 829 in this make and model, 999 as pilot in command, 19 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 64 °F, dew point 48 °F
- Altimeter: 29.00 inHg
- Observed at: FAT

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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