# NTSB MKC83LA080: Mooney M20F, N3386X, Springfield, MO, March 22, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 22, 1983, 11:20 local (17:20 UTC)
- Place: Springfield, MO
- Location: 37.2457° N, 93.3886° W: Placed by OpenAirDocs at SPRINGFIELD-BRANSON NTL (SGF), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.2457&lon=-93.3886&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33391
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC83LA080
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33391/pdf
- Page: https://openairdocs.org/ntsb/MKC83LA080

## Sequence of events

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

- Gear collapsed, taxi - from landing
  - landing gear,gear lever - unlocked (cause)
  - gear down and locked - not identified, pilot in command (cause)
  - landing gear,gear warning system - inoperative (contributing factor)

## Analysis

THE AIRCRAFT SUSTAINED DAMAGE WHEN THE LEFT MAIN AND NOSE GEARS COLLAPSED WHILE THE PILOT WAS TAXIING IN FROM LANDING. THE AIRCRAFT LANDED ON RUNWAY 31 AND HAD BEGUN A RIGHT TURN ONTO A TAXIWAY WHEN THE NOSE GEAR AND THEN THE LEFT MAIN GEAR RETRACTED. THE LANDING GEAR HANDLE WAS FOUND IN THE GEAR RETRACTED POSITION. THE PILOT SAID THE LANDING GEAR INDICATED DOWN AND LOCKED PRIOR TO LANDING BUT THE GEAR HANDLE MAY NOT HAVE BEEN LATCHED IN THE DOWN POSITION. THE PILOT ALSO SAID HE DID NOT HEAR THE LANDING GEAR UNSAFE WARNING HORN DURING THE ACCIDENT SEQUENCE. AN FAA INSPECTOR SAID THE WARNING HORN WAS OUT OF ADJUSTMENT AND DID NOT FUNCTION PROPERLY. THE EXAMINATION OF THE LANDING GEAR LATCH MECHANISM DID NOT REVEAL ANY DEFICIENCIES.

## Aircraft

- Registration: [N3386X](https://openairdocs.org/deregistered/N3386X-2019-09-06), registration cancelled 2019-09-06, S/N 670030, built 1966 (OpenAirDocs)
- Reported make and model: MOONEY M20F
- Registry model: [Mooney M20F](https://openairdocs.org/model/mooney-m20f) (registry code 5870214) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 670030
- Airframe hours: 2076
- Engines: LYCOMING IO-360-A1A 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Carroll V. Goforth
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 1, 1982, 32 hours before
- Departed: 89K, FAUCETT, MO
- Flight plan: VFR
- Airport: SGF, Springfield, runway 31, 5,598 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 572 total, 140 in this make and model, 527 as pilot in command, 8 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 6 knots
- Visibility: 15 statute miles
- Temperature: 45 °F, dew point 19 °F
- Altimeter: 30.00 inHg
- Observed at: SGF

## 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 19830322008459A](https://openairdocs.org/incident/19830322008459A), Mar 22, 1983: Mooney M20F, Springfield, MO, Substantial damage. Landing gear collapsed turning onto a taxiway after landing. Pilot failed to ascertain manual gear handle locked.

## Other investigations on N3386X (2)

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 GAA16CA218](https://openairdocs.org/ntsb/GAA16CA218), May 1, 2016: Mooney M20 (N3386X), Plano, TX, substantial damage. Probable cause: The pilot's failure to maintain directional control during the aborted landing in gusty wind conditions, which resulted in a collision with a fence.
- [NTSB MKC68F0057](https://openairdocs.org/ntsb/MKC68F0057), Jun 10, 1967: Mooney M20C (N3386X), Minot, ND, 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.

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