# NTSB CHI92LA178: Cessna 150L, N19317, Colby, KS, June 15, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 15, 1992, 11:40 local (16:40 UTC)
- Place: Colby, KS
- Coordinates: 39.380283, -101.039123 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.3803&lon=-101.0391&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 September 14, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15470
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92LA178
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15470/pdf
- Page: https://openairdocs.org/ntsb/CHI92LA178

## Probable cause

A JAMMED EXHAUST VALVE IN THE NUMBER ONE CYLINDER OF THE ENGINE ASSEMBLY.

## Sequence of events

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

- Loss of engine power, takeoff - initial climb
  - engine assembly,valve,exhaust - jammed (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - rough/uneven (contributing factor)

## Analysis

THE ACCIDENT AIRPLANE NOSED OVER IN ROUGH UNEVEN TERRAIN DURING AN OFF AIRPORT FORCED LANDING GROUND ROLL.  THE PILOT SELECTED THE FIELD FOR LANDING AFTER LOSING PARTIAL ENGINE POWER APPROXIMATELY 80 FEET ABOVE THE GROUND DURING INITIAL CLIMB FROM TAKEOFF.  A POST ACCIDENT INSPECTION OF THE ENGINE DISCLOSED THE EXHAUST VALVE IN THE NUMBER ONE CYLINDER WAS STUCK IN THE OPEN POSITION.

## Aircraft

- Registration: [N19317](https://openairdocs.org/deregistered/N19317-1994-06-15), registration cancelled 1994-06-15, S/N 15074332 (OpenAirDocs)
- Reported make and model: CESSNA 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Category: Airplane
- Serial number: 15074332
- Airframe hours: 3361
- Engines: CONTINENTAL O-200 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Patrick R. Johnson
- Registered owner: Patrick R. Johnson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 7, 1992, 89 hours before
- Destination: COS, CO. SPRINGS, CO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 378 total, 142 in this make and model, 182 as pilot in command, 49 in the last 90 days, 41 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 19 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 34 °F
- Altimeter: 29.00 inHg
- Observed at: GLD, 30 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 19920615020249A](https://openairdocs.org/incident/19920615020249A), Jun 15, 1992: Cessna 150L, Colby, KS, Substantial damage. Lost power on climbout. Forced landed in rough field. Found NR1 cylinder exhaust valve stuck in open position.

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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