# NTSB MIA87LA193: Stinson 108-1, N8399K, West Palm Beach, FL, June 29, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 29, 1987, 19:10 local (23:10 UTC)
- Place: West Palm Beach, FL
- Coordinates: 26.579534, -80.069984 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.5795&lon=-80.0700&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 8, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 31934
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA87LA193
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31934/pdf
- Page: https://openairdocs.org/ntsb/MIA87LA193

## 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
  - throttle/power control - improper use of, dual student (cause)
  - directional control - not maintained, dual student (cause)
  - ground loop/swerve - not corrected, pilot in command(cfi) (cause)
- Gear collapsed, landing - roll

## Analysis

WHILE ON AN INSTRUCTIONAL FLT DURING THE LANDING ROLL THE ACFT BEGAN TO DRIFT TO THE RIGHT. THE STUDENT PLT CORRECTED THE DRIFT WITH LEFT RUDDER, HOWEVER HE THEN ADDED FULL POWER. THE ACFT THEN GROUND LOOPED TO THE LEFT, DURING WHICH THE RIGHT MAIN GEAR COLLAPSED.

## Aircraft

- Registration: [N8399K](https://openairdocs.org/aircraft/N8399K), registered now, S/N 108-1399 (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: 1081399
- Airframe hours: 1775
- Engines: FRANKLIN 6A4-150 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Alexis D. Smith
- Registered owner: Alexis D Smith
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 15, 1987, 10 hours before
- Airport: LNA, Palm Beach County Park, runway 15, 3,485 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 69; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 4,373 total, 6 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 82 °F, dew point 75 °F
- Altimeter: 30.00 inHg
- Observed at: PBI, 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 19870629056619A](https://openairdocs.org/incident/19870629056619A), Jun 29, 1987: Univar 1081, West Palm Beach, FL, No damage. The aircraft ground looped on landing. The instructor failed to anticipate and correct the student control inputs.

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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