# NTSB MKC84FA016: Stinson 108, N39468, Angora, NE, November 6, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: November 6, 1983, 13:55 local (20:55 UTC)
- Place: Angora, NE
- Coordinates: 41.870918, -103.100463 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.8709&lon=-103.1005&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): 33502
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84FA016
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33502/pdf
- Page: https://openairdocs.org/ntsb/MKC84FA016

## 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
  - engine assembly,valve,intake - failure,total (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - ditch (contributing factor)
- On ground/water collision with object, landing
  - object - fence (contributing factor)

## Analysis

THE PLT REPORTED THAT THE ENG BEGAN RUNNING ROUGH, THEN QUIT WHILE HE WAS FLYING OVER AN AREA OF ROUGH TERRAIN. HE REPORTED THAT AS HE WAS MAKING A FORCED LANDING, THE ACFT CAME IN CONTACT WITH A WASHED OUT DITCH, CARTWHEELED & HIT A FENCE. AN EXAM OF THE ENG REVEALED THAT THE #4 EXHAUST VALVE STEM HAD FAILED. THE #4 PISTON WAS DISINTEGRATED & PIECES WERE SCATTERED THRU-OUT THE INSIDE OF THE ENG, BUT THE VALVE HEAD WAS NOT FOUND. THE ENG HAD ACCUMULATED 555 HRS SINCE THE LAST MAJOR OVERHAUL.

## Aircraft

- Registration: [N39468](https://openairdocs.org/deregistered/N39468-2012-11-14), registration cancelled 2012-11-14, S/N 108-24, built 1946 (OpenAirDocs)
- Reported make and model: STINSON 108
- Registry model: [Stinson 108](https://openairdocs.org/model/stinson-108) (registry code 9230402) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 108-24
- Airframe hours: 3228
- Engines: FRANKLIN 6A4-165-B3 165 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Daniel M. Bowman
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 10, 1983

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; private; airplane ratings: single-engine land; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 134 total, 31 in this make and model, 97 as pilot in command, 8 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 8 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 66 °F
- Altimeter: 29.00 inHg
- Observed at: AIA, 19 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 19831106056449A](https://openairdocs.org/incident/19831106056449A), Nov 6, 1983: Univar 108, Angora, NE, Destroyed. Engine quit. Stalled aircraft trying to stretch the glide. Exhause valve broke and piston disintegrated

## Other investigations on N39468 (1)

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 CHI67D0219](https://openairdocs.org/ntsb/CHI67D0219), Jul 10, 1966: Stinson 108 (N39468), Grays Lake, IL, 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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