# NTSB MIA89LA190: Cessna 172M, N4427Q, Perry, FL, July 10, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 10, 1989, 09:17 local (13:17 UTC)
- Place: Perry, FL
- Coordinates: 30.169536, -83.610725 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.1695&lon=-83.6107&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report July 9, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 32455
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA89LA190
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32455/pdf
- Page: https://openairdocs.org/ntsb/MIA89LA190

## Probable cause

FAILURE OF THE NUMBER THREE EXHAUST VALVE WHICH NECESSITATED A FORCED LANDING.  THE TREES WERE CONSIDERED TO BE A CONTRIBUTING FACTOR.

## 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, cruise - normal
  - engine assembly,valve,exhaust - failure,total (cause)
- Forced landing, descent - emergency
- In flight collision with object, landing
  - object - tree(s) (contributing factor)

## Analysis

THE ACFT WAS CRUISING AT 3000 FT WHEN THE ENG LOST POWER. SUBSEQUENTLY, IT STRUCK TREES DURING A FORCED LANDING, WHICH RESULTED IN SUBSTANTIAL DAMAGE. AN EXAM OF THE ENG REVEALED THE #3 EXHUST VALVE HAD FAILED. THE ENG HAD BEEN OPERATED 1545 HRS SINCE IT WAS LAST OVERHAULED IN 1977.

## Aircraft

- Registration: [N4427Q](https://openairdocs.org/deregistered/N4427Q-1989-08-14), registration cancelled 1989-08-14, S/N 17261706 (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs)
- Category: Airplane
- Serial number: 17261706
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Pringle, George O.
- Registered owner: George O Pringle
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Departed: 2J9, QUINCY, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 4 knots
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 73 °F
- Altimeter: 30.00 inHg
- Observed at: TLH, 50 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 19890710021529A](https://openairdocs.org/incident/19890710021529A), Jul 10, 1989: Cessna 172, Perry, FL, Substantial damage. Engine quit en route. Crash landed in trees. Found NR3 cylilnder exhaust valve had failed.

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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