# NTSB SEA87IA093: Stinson 108-1, N9016K, Idaho Falls, ID, May 9, 1987

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: May 9, 1987, 17:31 local (23:31 UTC)
- Place: Idaho Falls, ID
- Coordinates: 43.499374, -111.890083 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.4994&lon=-111.8901&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed, report July 10, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40544
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87IA093
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40544/pdf
- Page: https://openairdocs.org/ntsb/SEA87IA093

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - in-flight planning/decision - improper, pilot in command (cause)
  - lack of recent experience in type of aircraft, pilot in command (contributing factor)
  - weather condition - gusts (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
- Main gear collapsed, landing - roll
  - landing gear,main gear strut - overload (contributing factor)
  - landing gear,main gear strut - separation (contributing factor)

## Analysis

DURING A GO AROUND THE PILOT DECIDED TO ATTEMPT TO RELAND THE AIRCRAFT. GUSTY CROSSWIND CONDITIONS EXISTED AT THE TIME AND DIRECTIONAL CONTROL WAS LOST DURING WHICH THE AIRCRAFT ENTERED INTO A GROUND LOOP MANEUVER AND THE LEFT MAIN LANDING GEAR STRUT SEPARATED.  THE PILOT'S FLIGHT RECORDS INDICATED THAT HE HAD EXECUTED ONLY 4 LANDINGS IN THE MAKE/MODEL AIRCRAFT WITHIN THE PREVIOUS 8 MONTHS.

## Aircraft

- Registration: [N9016K](https://openairdocs.org/deregistered/N9016K-2014-08-15), registration cancelled 2014-08-15, S/N 108-2016, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-1
- Registry model: [Stinson 108-1](https://openairdocs.org/model/stinson-108-1) (registry code 9230404) (OpenAirDocs)
- Registry engine: [Franklin 6A4150 series](https://openairdocs.org/engine/franklin-6a4150-series) (registry code 27024, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 108-2016
- Airframe hours: 1590
- Engines: FRANKLIN 6A4-150 150 horsepower reciprocating
- Damage: Minor damage
- Flight: Personal, Part 91
- Operator: Delaine G. Bowen
- Registered owner: Delaine G. Bowen
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 17, 1986, 25 hours before
- Departed: PVU, PROVO, UT
- Destination: IDA, IDAHO FALLS, ID
- Airport: IDA, Fanning Field, runway 34, 5,175 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 153 total, 116 as pilot in command, 6 in the last 90 days, 6 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 22 knots, gusting 33
- Visibility: 20 statute miles
- Lowest ceiling: 10,000 ft overcast
- Altimeter: 29.00 inHg
- Observed at: IDA

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19870509034999I](https://openairdocs.org/incident/19870509034999I), May 9, 1987: Univar 1081, Idaho Falls, ID, Minor damage. Aircraft ground looped in gusty winds during rollout.

## Other investigations on N9016K (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 WPR12LA045](https://openairdocs.org/ntsb/WPR12LA045), Nov 19, 2011: Stinson 108-1 (N9016K), Boulder City, NV, substantial damage. Probable cause: The pilot's failure to maintain directional control while taxiing with a gusting crosswind.

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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