# NTSB MKC86LA111: Jackman Pitts S-1S, N39967, Montezuma, KS, May 19, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 18, 1986, 19:00 local (May 19, 1986, 00:00 UTC)
- Place: Montezuma, KS
- Coordinates: 37.590469, -100.439231 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.5905&lon=-100.4392&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34179
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC86LA111
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34179/pdf
- Page: https://openairdocs.org/ntsb/MKC86LA111

## Sequence of events

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

- Loss of control - on ground/water, landing - flare/touchdown
  - proper alignment - not maintained, pilot in command (cause)
  - terrain condition - crop
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled, pilot in command
- Nose over, landing - roll

## Analysis

THE PILOT STATED THAT AS THE AIRCRAFT TOUCHED DOWN ON THE RUNWAY THE LEFT WING STRUCK CROPS IN A WHEATFIELD WHICH ARRESTED THE FORWARD MOTION OF THE WING. ACCORDING TO TH E PILOT, THE AIRCRAFT VEERED OUT OF CONTROL INTO THE WHEATFIELD, CARTWHEELED TWICE, AND CAME TO REST IN AN INVERTED POSITION. THE PLT REPORTED LOCAL WINDS WERE FROM THE EAST AT 5 TO 10 KTS.

## Aircraft

- Registration: [N39967](https://openairdocs.org/deregistered/N39967-2013-09-12), registration cancelled 2013-09-12, S/N 100EA421, built 1984 (OpenAirDocs)
- Reported make and model: JACKMAN PITTS S-1S
- Registry model: [Jackman Don PITTS S-1S](https://openairdocs.org/model/jackman-don-pitts-s-1s) (registry code 7221225) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 100EA421
- Airframe hours: 80
- Engines: LYCOMING O-360 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Edward F.Fleet
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, September 13, 1985
- Departed: 8K4, MEADE, KS
- Destination: 46K, MONTEZUMA, KS
- Airport: 46K, Rexford, runway 17, 2,500 × 120 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 281 total, 43 in this make and model, 281 as pilot in command, 22 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 8 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 34 °F
- Altimeter: 30.00 inHg
- Observed at: DDC, 28 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 19860518017919A](https://openairdocs.org/incident/19860518017919A), May 18, 1986: Child S1SPITTS, Montezuma, KS, Substantial damage. Aircraft wing struck tall crops by the side of the runway during landing. Aircraft cartwheeled and flipped over.

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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