# NTSB NYC90LA070: Cessna 150, N4768X, Duanesburg, NY, February 8, 1990

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: February 8, 1990, 09:20 local (14:20 UTC)
- Place: Duanesburg, NY
- Coordinates: 42.759193, -74.130271 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.7592&lon=-74.1303&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 36613
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC90LA070
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36613/pdf
- Page: https://openairdocs.org/ntsb/NYC90LA070

## Probable cause

THE FAILURE OF THE FLIGHT INSTRUCTOR TO ADEQUATELY MONITOR THE ACTIONS OF THE STUDENT PILOT AND APPLY CORRECTIVE ACTION IN A TIMELY MANNER.

## Sequence of events

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

- In flight collision with object, descent
  - lowering of flaps - improper, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (cause)
  - remedial action - delayed, pilot in command(cfi) (cause)
  - object - tree(s) (contributing factor)

## Analysis

THE CFI AND STUDENT PILOT WERE ON A DUAL INSTRUCTIONAL FLIGHT. THE CFI REDUCED THE ENGINE POWER FOR FORCED LANDING PRACTICE. THE CFI CALLED FOR A GO AROUND AT 300-400 FEET ABOVE THE GROUND. ACCORDING TO THE CFI, THE STUDENT PILOT LOWERED THE FLAPS AND DID NOT ADD FULL POWER. WHEN THE CFI TOOK CONTROL OF THE AIRPLANE HE WAS UNABLE TO PREVENT IT FROM STRIKING TREES AND THE GROUND.

## Aircraft

- Registration: [N4768X](https://openairdocs.org/deregistered/N4768X-2014-10-14), registration cancelled 2014-10-14, S/N 15064818, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (registry code 2071816) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15064818
- Airframe hours: 3025
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Tom Sabata
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, December 27, 1989, 14 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: valid medical--no waivers/lim.; seat: right; flight hours: 1,660 total, 150 in this make and model, 1,596 as pilot in command, 120 in the last 90 days, 40 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 30 °F

## 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 19900208002349A](https://openairdocs.org/incident/19900208002349A), Feb 8, 1990: Cessna 150G, Duanesburg, NY, Substantial damage. Simulated forced landing into rising terrain. CFI took over to abort maneuver too late. Stalled into trees.

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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