# NTSB MKC82DA036: Piper PA-32R-301T, N8424B, Marceline, MO, February 21, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: February 21, 1982, 08:15 local (14:15 UTC)
- Place: Marceline, MO
- Coordinates: 39.710914, -92.939704 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7109&lon=-92.9397&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 21, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71574
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC82DA036
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71574/pdf
- Page: https://openairdocs.org/ntsb/MKC82DA036

## 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,intake - fatigue (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE PILOT STATED THAT WHILE CRUISING AT 7000 FEET THE ENGINE BEGAN VIBRATING, LOST POWER, AND EVENTUALLY STOPPED. HE ELECTED TO LAND IN AN OPEN FIELD RESULTING IN SUBSTANTIAL DAMAGE TO THE AIRCRAFT. EXAMINATION OF THE ENGINE REVEALED THAT THE INTAKE VALVE STEM ON THE #3 CYLINDER FAILED. FURTHER METALLURGICAL TESTS INDICATED THAT THE VALVE FAILED DUE TO EXCESSIVE HARDNESS IN A LOCALIZED AREA, RESULTING IN A MICRO-CRACK WHICH WAS THE STRESS RISER FOR THE FATIGUE FAILURE.

## Aircraft

- Registration: N8424B (not matched to a registry record)
- Reported make and model: PIPER PA-32R-301T (PA-32R-301)
- Category: Airplane
- Serial number: 32R8129093
- Airframe hours: 175
- Engines: LYCOMING TIO-540-SIAD 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kennwth D, Turner
- Registered owner: Parker/Mccrory/Mfc Co & Twenty
- Departed: OLATHE, KS
- Destination: QUINCY, IL
- Flight plan: IFR
- Airport: 6K1, Marceline, runway 34, 2,350 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; flight hours: 510 total, 13 in this make and model, 361 as pilot in command, 31 in the last 90 days, 13 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles

## 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 19820221000739A](https://openairdocs.org/incident/19820221000739A), Feb 21, 1982: Piper PA32R301T, Marceline, KS, Substantial damage. Engine vibrated, lost power. Landed in open field. Intake valve stem failed. Pieces fouled other cylinders.

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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