# NTSB MKC86LA135: Piper PA-28R-200, N44767, Mammoth Spring, AR, June 26, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 26, 1986, 13:15 local (18:15 UTC)
- Place: Mammoth Spring, AR
- Coordinates: 36.489822, -91.539718 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.4898&lon=-91.5397&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34200
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC86LA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34200/pdf
- Page: https://openairdocs.org/ntsb/MKC86LA135

## 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
  - maintenance,service of aircraft/equipment - improper, other maintenance personnel (cause)
  - condition(s)/step(s) in error, other maintenance personnel (contributing factor)
  - fluid,oil - exhaustion (cause)
- Forced landing, cruise
- On ground/water encounter with terrain/water, landing
  - terrain condition - rough/uneven (contributing factor)

## Analysis

THE PILOT STATED THAT THE AIRCRAFT HAD PLENTY OF OIL PRIOR TO DEPARTURE AND THAT THE FLIGHT WAS PROCEEDING NORMALLY WHEN, SUDDENLY, THE OIL PRESSURE DROPPED TO ZERO. WHILE SUBSEQUENTLY HEADING FOR A NEARBY AIRPORT, THE ENGINE LOST POWER AND SEIZED, FORCING AN OFF-AIRPORT EMERGENCY LANDING, ACCORDING TO THE PILOT. A POST-CRASH EXAMINATION OF THE ENGINE BY AN FAA AIRWORTHINESS INSPECTOR REVEALED THAT THE OIL PLUG WAS MISSING AND THERE WAS NO EVIDENCE OF SAFETY WIRING. THE AIRCRAFT HAD JUST BEEN RELEASED FROM MAINTENANCE, ACCORDING TO THE INSPECTOR.

## Aircraft

- Registration: [N44767](https://openairdocs.org/deregistered/N44767-1989-11-20), registration cancelled 1989-11-20, S/N 28R7535005 (OpenAirDocs)
- Reported make and model: PIPER PA-28R-200
- Registry model: [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200) (registry code 7102811) (OpenAirDocs)
- Category: Airplane
- Serial number: 28R-7535005
- Airframe hours: 2712
- Engines: LYCOMING IO-360-CIC 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Marvin L. Barnes
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 16, 1986, 42 hours before
- Departed: FLP, FLIPPIN, AR
- Destination: POF, POPLAR BLUFF, MO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 334 total, 18 in this make and model, 196 as pilot in command, 17 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 8 knots
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: 91 °F, dew point 72 °F
- Altimeter: 30.00 inHg
- Observed at: JBR, 59 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 19860626027849A](https://openairdocs.org/incident/19860626027849A), Jun 26, 1986: Piper PA28R200, Mammoth Spring, AR, Substantial damage. The engine seized and the aircraft made an off airport landing. The oil drain plug was missing.

## Other investigations on N44767 (1)

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.

- [NTSB CHI81FER37](https://openairdocs.org/ntsb/CHI81FER37), May 19, 1981: Piper PA-28R (N44767), Detroit Lakes, MN, substantial damage

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.