# NTSB MKC82DA146: Mitsubishi MU-2B-20, N550MA, Camdenton, MO, August 18, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 18, 1982, 09:25 local (14:25 UTC)
- Place: Camdenton, MO
- Coordinates: 37.999771, -92.740707 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.9998&lon=-92.7407&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 18, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70113
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC82DA146
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70113/pdf
- Page: https://openairdocs.org/ntsb/MKC82DA146

## Sequence of events

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

- Undershoot, approach - vfr pattern - final approach
  - terrain condition - displaced threshold (contributing factor)
  - lowering of flaps - inadequate, pilot in command (cause)
  - distance - misjudged, pilot in command (cause)
  - altitude - misjudged, pilot in command (cause)
- Hard landing, landing - flare/touchdown
  - flare - improper, pilot in command (cause)
- Gear collapsed, landing - flare/touchdown
  - landing gear - overload
- Loss of control - on ground/water, landing - roll
  - directional control - not possible, pilot in command
  - ground loop/swerve - uncontrolled, pilot in command

## Analysis

THE PILOT LANDED HARD DAMAGING THE LANDING GEAR ON A PAVED AREA SHORT OF THE DISPLACED THRESHOLD. FLAPS WERE SET AT 20 DEGREES INSTEAD OF 40 DEGREES. AFTER INITIAL LANDING, THE AIRCRAFT SWERVED RIGHT AND WENT OFF THE RUNWAY.

## Aircraft

- Registration: [N550MA](https://openairdocs.org/deregistered/N550MA-2010-07-14), registration cancelled 2010-07-14, S/N 169, built 1969 (OpenAirDocs)
- Reported make and model: MITSUBISHI MU-2B-20
- Registry model: [Mitsubishi MU-2B-20](https://openairdocs.org/model/mitsubishi-mu-2b-20) (registry code 5780407) (OpenAirDocs)
- Registry engine: [AiResearch 331 SER 605HP](https://openairdocs.org/engine/airesearch-331-ser-605hp) (registry code 01502, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 169
- Airframe hours: 4087
- Engines: GARRETT TPE-331-1-151 605 horsepower turbo prop
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Bot Investment Co. Inc.
- Registered owner: Bot Investment Co. Inc.
- Departed: LBO, LEBANON, MO
- Destination: AUBURN, ME
- Airport: H21, Camdenton Memorial, runway 15, 3,435 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; flight hours: 4,820 total, 172 in this make and model, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 7 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 19820818039369A](https://openairdocs.org/incident/19820818039369A), Aug 18, 1982: Mtsbsi MU2B20, Camdenton, MO, Substantial damage. Aircraft made hard landing short of displaced threshold, then ran off side of runway.

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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