# NTSB MKC85LA221: Lon J. Mcknight Flybaby 1A, N3826, Lebanon, MO, September 21, 1985

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: September 21, 1985, 12:00 local (17:00 UTC)
- Place: Lebanon, MO
- Coordinates: 37.669181, -92.659965 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.6692&lon=-92.6600&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34038
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC85LA221
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34038/pdf
- Page: https://openairdocs.org/ntsb/MKC85LA221

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, cruise - normal
  - reason for occurrence undetermined (cause)
- Forced landing, approach - vfr pattern - final approach
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - ground
  - stall - inadvertent, pilot in command (cause)
  - proper glidepath - not attained, pilot in command (cause)

## Analysis

AFTER WASHING HIS AIRCRAFT THE PLT DPTD THE AIRPORT FOR A LCL FLIGHT.  THE FLIGHT LASTED FOR APPROX. 30 MIN. WHEN THE PLT STATED THE END BEGAN RUNNING ROUGH.  A PRECAUTIONARY LANDING WAS MADE TO THE AIRPORT.  THE ACFT STALLED IMPACTING THE GROUND SHORT OF THE RWY.  THE ACFT IMPACTED THE GROUND AT AN APPROXIMATE 40 DEGREE ANGLE.  INSP OF THE ACFT ENGINE DID NOT REVEAL ANY MECHANICAL MALFUNCTION.

## Aircraft

- Registration: [N3826](https://openairdocs.org/aircraft/N3826), registered now, S/N 66-66, built 1972 (OpenAirDocs)
- Reported make and model: LON J. MCKNIGHT FLYBABY 1A
- Registry model: [Mcknight FLYBABY 1A](https://openairdocs.org/model/mcknight-flybaby-1a) (registry code 0562241) (OpenAirDocs)
- Registry engine: [Continental A&C75 series](https://openairdocs.org/engine/continental-a-c75-series) (registry code 17005, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 66-66
- Airframe hours: 327
- Engines: CONTINENTAL A75 75 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Lon J. Mcknight
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, June 6, 1985
- Departed: LBO, LEBANON, MO
- Airport: LBO, Lebanon

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 80; private; airplane ratings: single-engine land; medical: class 3, expired; seat: center; flight hours: 526 total, 526 as pilot in command, 3 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 9 knots, gusting 9
- Visibility: 15 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 79 °F, dew point 59 °F
- Altimeter: 30.00 inHg
- Observed at: SGF, 42 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 19850921067709A](https://openairdocs.org/incident/19850921067709A), Sep 21, 1985: Amtrbw FLYBABY1, Lebanon, MO, Substantial damage. Engine quit in flight after aircraft was washed. Possible water in fuel. Pilot had no medical or biennial.

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.