# NTSB BFO94LA059: Gulfstream American AA-5B, N28224, Oneonta, NY, April 2, 1994

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 2, 1994, 14:15 local (19:15 UTC)
- Place: Oneonta, NY
- Coordinates: 42.450771, -75.059837 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.4508&lon=-75.0598&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 13, 1995
- Report: Approved by Office Director
- NTSB case key (mKey): 8904
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO94LA059
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8904/pdf
- Page: https://openairdocs.org/ntsb/BFO94LA059

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING TAKEOFF.  A RELATED FACTOR WAS THE CROSSWIND COMPONENT.

## Sequence of events

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

- Loss of control - on ground/water, takeoff
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - flight into known adverse weather - initiated, pilot in command (cause)
  - directional control - not maintained, pilot in command
- On ground/water encounter with terrain/water, takeoff - roll/run
  - terrain condition - snowbank

## Analysis

THE STUDENT PILOT REPORTED THAT DURING THE TAKEOFF ROLL, AS HE WAS ABOUT TO LIFT OFF, THE AIRPLANE VEERED LEFT. THE PILOT WAS UNABLE TO REGAIN DIRECTIONAL CONTROL, DESPITE USING RIGHT RUDDER/BRAKE. THE AIRPLANE OVERRAN THE LEFT SIDE OF THE RUNWAY AND STRUCK A SNOWBANK. THE PILOT STATED THAT HE BELIEVED THERE WAS A PROBLEM WITH THE LEFT WHEEL OR BRAKE. AN FAA AVIATION SAFETY INSPECTOR WHO EXAMINED THE AIRPLANE DISCLOSED NO EVIDENCE OF MECHANICAL MALFUNCTION. THERE WAS A 90 DEGREE LEFT CROSSWIND AT 14 KTS WITH GUSTS TO 20 KTS, AT THE TIME OF THE ACCIDENT.

## Factual narrative

On April 2, 1994, at 1415 eastern standard time, a Gulfstream American AA-5B, struck a snowbank during takeoff on runway 24 at Oneonta Municipal Airport, Oneonta, New York.  The student pilot was not injured while the airplane sustained substantial damage.  The instructional flight was being operated under 14 CFR 91.  Visual meteorological conditions prevailed and a flight plan was not filed.

The pilot stated that during the takeoff roll as he was about to rotate, the airplane started to veer to the left.  He stated that he applied right rudder, but he was unsuccessful.  The pilot stated that he continued to apply right rudder and right brake, but the airplane continued to veer off the left side of the runway and struck a snowbank.  The pilot stated that he believed there was a problem with the left wheel or brake.

An FAA Aviation Safety Inspector examined the airplane after the accident and reported that there was no mechanical malfunction.  He stated that the winds at the time of the accident were 150 degrees at 14 knots gusting to 20 knots.

## Aircraft

- Registration: [N28224](https://openairdocs.org/aircraft/N28224), registered now, S/N AA5B0946, built 1978 (OpenAirDocs)
- Reported make and model: GULFSTREAM AMERICAN AA-5B
- Registry model: [Gulfstream American AA-5B](https://openairdocs.org/model/gulfstream-american-aa-5b) (registry code 3970106) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: AA5B0946
- Airframe hours: 3115
- Engines: LYCOMING O-360-A4K 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Kamp Air Aviation Inc.
- Registered owner: Bert Cook/ Bernard Kamp,
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: Annual, February 23, 1994, 20 hours before
- Airport: N66, Oneonta Muni, runway 24, 4,200 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 46 total, 27 in this make and model, 13 as pilot in command, 27 in the last 90 days, 11 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 14 knots, gusting 20
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 30 °F
- Altimeter: 30.00 inHg
- Observed at: BGM, 40 nm away

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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