# NTSB CHI85LA272: Stinson 108-2, N9306K, Hastings, MI, July 5, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 5, 1985, 15:45 local (19:45 UTC)
- Place: Hastings, MI
- Coordinates: 42.649482, -85.2798 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.6495&lon=-85.2798&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13126
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA272
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13126/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA272

## 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 - failure,total (cause)
  - maintenance - inadequate, other maintenance personnel (cause)
- Forced landing, descent - emergency
  - terrain condition - none suitable (contributing factor)
- In flight collision with object, landing - flare/touchdown
  - object - tree(s) (contributing factor)

## Analysis

THE PURPOSE OF THE FLIGHT WAS TO BREAK IN THE NEWLY OVERHAULED ENGINE. THE PILOT STATED THAT HE HAD BEEN FLYING AROUND THE LOCAL AREA FOR ABOUT 25 MINUTES WHEN HE HEARD A CLANK AND THE ENGINE LOST COMPLETE POWER. THE PILOT DETERMINED THAT A TREE LANDING WAS IMPENDING DUE TO THE LACK OF AN OPEN FIELD. THE ACFT COLLIDED WITH TREES IN A NOSE HIGH, WINGS LEVEL,STALLED ATTITUDE. THE ACFT CAME TO REST IN A TREE ABOUT 10 FT AGL. DISASSEMBLY OF THE ENGINE DISCLOSED THE CRANKSHAFT GEAR HAD FAILED. METALLURGICAL EXAM DETERMINED HIGH CYCLE FATIGUE.

## Aircraft

- Registration: [N9306K](https://openairdocs.org/deregistered/N9306K-2013-10-24), registration cancelled 2013-10-24, S/N 108-2306, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-2
- Registry model: [Stinson 108-2](https://openairdocs.org/model/stinson-108-2) (registry code 9230406) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1082306
- Engines: FRANKLIN 6A4165 SERIES 165 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Jack W. Shirlin
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 5, 1984

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 295 total, 32 in this make and model, 295 as pilot in command, 10 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 6 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 39 °F
- Altimeter: 29.00 inHg
- Observed at: GRR

## 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 19850705029919A](https://openairdocs.org/incident/19850705029919A), Jul 5, 1985: Univar 1082, Hastings, MI, Destroyed. Stalled aircraft into trees after engine failed. Found crankshaft gear failed due to improperly inserted keyway.

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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