# NTSB NYC90LA044: Cessna 150, N9241U, Millis, MA, January 2, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: January 2, 1990, 10:30 local (15:30 UTC)
- Place: Millis, MA
- Location: 42.1676° N, 71.3578° W: Placed by OpenAirDocs: center of Millis, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.1676&lon=-71.3578&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 12, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 36593
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC90LA044
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36593/pdf
- Page: https://openairdocs.org/ntsb/NYC90LA044

## Probable cause

THE PILOT'S IMPROPER USE OF CARBURETOR HEAT WHICH CAUSED A POWER LOSS AND A FORCED LANDING IN UNSUITABLE TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE CARBURETOR ICING CONDITIONS AND THE PILOTS LACK OF TOTAL EXPERIENCE.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, takeoff - initial climb
  - weather condition - carburetor icing conditions (cause)
  - carburetor heat - improper use of, pilot in command (cause)
  - lack of total experience, pilot in command
- Forced landing, descent - emergency
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - none suitable (contributing factor)

## Analysis

THE STUDENT PILOT EXPERIENCED A POWER LOSS ON TAKEOFF AT 500 FEET AND MADE A FORCED LANDING IN A GRAVEL PIT. THE ENGINE WAS TEST RUN SATISFACTORILY AFTER THE ACCIDENT. THE CLOSEST RECORDED WEATHER WAS 25 MILES AWAY AND HAD A TEMPERATURE OF 28 DEGREES F AND A DEWPOINT OF 16 DEGREES F. HOWEVER THE FAA REPORTED THE DEWPOINT WAS NOT REPRESENTATIVE OF THE AIRPORT WHICH IS TYPICALLY MORE HUMID DUE TO THE CLOSE PROXIMITY OF PONDS AND STREAMS.

## Aircraft

- Registration: [N9241U](https://openairdocs.org/deregistered/N9241U-1992-01-15), registration cancelled 1992-01-15, S/N 15078191 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150M](https://openairdocs.org/model/cessna-150m) (registry code 2071830) (OpenAirDocs)
- Category: Airplane
- Serial number: 15078191
- Engines: CONTINENTAL O-200A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Aviation East
- Airworthiness certificate: Standard, Normal
- Departed: MA07, NORFOLK, MA
- Destination: AFN, JAFFERY, NH
- Airport: MA07, Norfolk

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; student; medical: class 3, valid medical--w/ waivers/lim; flight hours: 63 total, 63 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 15 knots
- Visibility: 30 statute miles
- Lowest ceiling: 7,000 ft broken
- Temperature: 28 °F, dew point 16 °F
- Observed at: ORH, 25 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 19900102000039A](https://openairdocs.org/incident/19900102000039A), Jan 2, 1990: Cessna 150M, Norfolk, MA, Substantial damage. Lost power after takeoff forced landing in gravel pit,possible carb icing conditions.

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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