# NTSB BFO92LA113: Stinson JR.SR., N13462, Hanson, MA, July 26, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 26, 1992, 12:00 local (16:00 UTC)
- Place: Hanson, MA
- Location: 42.2966° N, 71.4158° W: Placed by OpenAirDocs at MSP GHQ (MA02), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2966&lon=-71.4158&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 30, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 11829
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO92LA113
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11829/pdf
- Page: https://openairdocs.org/ntsb/BFO92LA113

## Probable cause

THE PILOT INADEQUATE COMPENSATION FOR WIND WHICH RESULTED IN THE LOSS OF DIRECTIONAL CONTROL.

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - weather condition - crosswind (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, takeoff - roll/run
- Gear collapsed, takeoff - roll/run

## Analysis

THE PILOT WAS TAKING OFF FROM AN AIRSTRIP TO POSITION HIS FLOATPLANE AT A SEAPLANE BASE.  THE AIRPLANE WAS EQUIPPED WITH A PORTABLE SIX WHEEL ' DOLLY ' WHICH ATTACHES TO THE FLOATS, AND AUTOMATICALLY DETACHES WHEN THE AIRPLANE BECOMES AIRBORNE DURING TAKEOFF.  ACCORDING TO THE FAA, THIS WAS THE PILOT'S FIRST FLIGHT WITH THIS LOCALLY FABRICATED ARRANGEMENT. THE PILOT STATED THAT DURING TAKEOFF THE ' DOLLY ' MALFUNCTIONED, AND THE AIRPLANE TURNED APPROXIMATELY 70 DEGREES TO THE LEFT REDUCING THE SPEED OF THE AIRPLANE.  THE AIRPLANE SETTLED BACK ONTO THE RUNWAY SIDEWAYS BREAKING OFF THE' X BRACE RESULTING IN THE FLOAT STRUCTURE COLLAPSING UNDER THE AIRPLANE.'  THE RIGHT WING THEN STRUCK THE GROUND, BREAKING THE SPARS. THE PILOT REPORTED THAT THERE WAS 5 KNOTS RIGHT CROSSWIND.  A WITNESS REPORTED THAT DURING TAKEOFF ROLL THE RIGHT WING LIFTED, FOLLOWED BY THE SEPARATION OF THE RIGHT FLOAT DOLLY.  THE AIRPLANE THEN SWERVED LEFT ON THE LEFT FLOAT DOLLY AND THE LEFT WING STRUCK THE GROUND.  THE WITNESS SAID THE AIRPLANE SLID SIDEWAYS, COLLAPSING THE FLOATS.

## Aircraft

- Registration: [N13462](https://openairdocs.org/aircraft/N13462), registered now, S/N 8715, built 1955 (OpenAirDocs)
- Reported make and model: STINSON JR.SR.
- Registry model: [Stinson JR. SR](https://openairdocs.org/model/stinson-jr-sr) (registry code 8630406) (OpenAirDocs)
- Registry engine: [Lycoming R680E series](https://openairdocs.org/engine/lycoming-r680e-series) (registry code 41545, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 8715
- Airframe hours: 4123
- Engines: LYCOMING R-680-13 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Positioning, Part 91
- Operator: Annis, Peter
- Registered owner: North River Aviation Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 20, 1992, 1 hours before
- Departed: MA02
- Destination: MA01, HALIFAX, MA
- Airport: MA02, Cranland, runway 18, 1,860 × 60 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; airline transport, flight instructor, flight engineer; airplane ratings: single-engine sea, multi-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 22,686 total, 35 in this make and model, 10,960 as pilot in command, 144 in the last 90 days, 30 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 9 knots
- Visibility: 7 statute miles
- Lowest ceiling: 22,000 ft broken
- Temperature: 77 °F, dew point 57 °F
- Altimeter: 29.00 inHg
- Observed at: KNZW, 1 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 19920726027329A](https://openairdocs.org/incident/19920726027329A), Jul 26, 1992: Stnson JRSR, Hanson, MA, Substantial damage. Float plane took off from runway on a dolly. Pilot allowed wind to lift a wing. Lost directional control. Crashed.

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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