# NTSB SEA93LA074: Cessna 150L, N150KC, Provo, UT, March 6, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 6, 1993, 10:45 local (17:45 UTC)
- Place: Provo, UT
- Coordinates: 40.219638, -111.689926 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.2196&lon=-111.6899&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 19, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42995
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA93LA074
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42995/pdf
- Page: https://openairdocs.org/ntsb/SEA93LA074

## Probable cause

DIRECTIONAL CONTROL WAS NOT MAINTAINED.

## 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
  - directional control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - snowbank

## Analysis

DURING THE TAKEOFF GROUND ROLL, THE PILOT REPORTED THAT AT 40 MPH, AND THE TAILWHEEL RAISED, 'THE RIGHT LANDING GEAR COCKED AND FULL LEFT RUDDER WOULD NOT CORRECT THE DRIFT TO THE RIGHT.' THE PILOT WAS UNABLE TO MAINTAIN CONTROL AND THE AIRPLANE TRAVELLED OFF THE RUNWAY AND COLLIDED WITH A SNOWBANK. THERE WAS NO EVIDENCE TO INDICATE A MECHANICAL FAILURE OR MALFUNCTION.

## Aircraft

- Registration: [N150KC](https://openairdocs.org/aircraft/N150KC), registered now, S/N 15074254, built 1972 (OpenAirDocs)
- Reported make and model: CESSNA 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15074254
- Airframe hours: 3008
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Pro Air Services
- Registered owner: Pro Air Services
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 22, 1992, 6 hours before
- Airport: PVU, Provo, runway 13, 7,091 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,600 total, 200 in this make and model, 1,600 as pilot in command, 38 in the last 90 days, 22 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 4 statute miles
- Lowest ceiling: 3,300 ft broken
- Temperature: 34 °F, dew point 30 °F
- Altimeter: 30.00 inHg

## 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 19930306034579A](https://openairdocs.org/incident/19930306034579A), Mar 6, 1993: Cessna STC150, Provo, UT, Substantial damage. Lost directional control when tail came up on takeoff. Veered into a snowbank.

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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