# NTSB BFO92LA119: Cessna 150F, N1073P, Norfolk, MA, July 30, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 30, 1992, 09:30 local (13:30 UTC)
- Place: Norfolk, MA
- Location: 41.5676° N, 71.1192° W: Placed by OpenAirDocs at Friends Ultralightport (MA07), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.5676&lon=-71.1192&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 30, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 11835
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO92LA119
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11835/pdf
- Page: https://openairdocs.org/ntsb/BFO92LA119

## Probable cause

THE LOSS OF COMPRESSION IN THE NO. 4 CYLINDER DUE TO A VALVE STUCK IN THE OPEN POSITION, WHICH RESULTED IN THE LOSS OF ENGINE POWER.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - engine assembly,valve,exhaust - jammed (cause)
  - engine assembly,valve,exhaust - open (cause)
- On ground/water encounter with terrain/water, maneuvering - turn to reverse direction
- Nose over, landing
  - terrain condition - soft (contributing factor)

## Analysis

THE PILOT WAS TAKING OFF ON RUNWAY 36 WHEN THE ENGINE LOST POWER AT ABOUT 400 FEET ABOVE THE GROUND.  THE PILOT STATED THAT HE LOWERED THE NOSE AND MADE A TURN TO LAND ON RUNWAY 18, BUT THE AIRPLANE VEERED OFF 150 FEET TO THE RIGHT OF THE RUNWAY INTO A PLOWED FIELD AND NOSED OVER. EXAMINATION OF THE AIRPLANE BY THE FAA REVEALED THE NUMBER FOUR EXHAUST VALVE FAILED IN THE OPEN POSIITON, AND THE NUMBER THREE EXHAUST VALVE WAS LEAKING DUE TO A WORN SEAT.

## Aircraft

- Registration: [N1073P](https://openairdocs.org/deregistered/N1073P-2018-01-09), registration cancelled 2018-01-09, S/N 15074988, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 150F
- 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: 15074988
- Airframe hours: 2752
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Aviation East Inc.
- Registered owner: Troy J Flowers
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, July 3, 1992, 147 hours before
- Departed: MA07
- Airport: MA07, Norfolk, runway 36, 2,700 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 66; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 169 total, 110 in this make and model, 50 in the last 90 days, 10 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 73 °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 19920730028169A](https://openairdocs.org/incident/19920730028169A), Jul 30, 1992: Cessna 150F, Norfolk, MA, Substantial damage. Worn and sticking valves caused power loss on climbout. Made 180 to return. Landed but veered off runway into ditch

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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