# NTSB CHI86LA011: Maule M-4C, N9845M, Blue Earth, MN, October 14, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 14, 1985, 15:15 local (20:15 UTC)
- Place: Blue Earth, MN
- Coordinates: 43.630119, -94.089378 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6301&lon=-94.0894&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13370
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86LA011
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13370/pdf
- Page: https://openairdocs.org/ntsb/CHI86LA011

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - crosswind (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - not corrected, pilot in command (cause)
  - landing gear - failure,total (contributing factor)
- Nose over, landing - roll
  - terrain condition - soft

## Analysis

THE ACFT NOSED OVER AFTER DEPARTING THE RWY FOLLOWING A LOSS OF DIRECTIONAL CONTROL DURING LANDING. THE CFI STATED THAT AS THE TAILWHEEL TOUCHED THE RWY THE ACFT BEGAN VEERING TO THE RIGHT. HE APPLIED BRAKES AND FULL LEFT RUDDER CAUSING THELEFT WHEEL RIM TO FAIL. THE ACFT THEN CONTINUED OFF THE RWY WHERE IT NOSED OVER. THE LANDING WAS BEING MADE ON RWY 16 WITH WINDS FROM 240 DEGS AT 12 KTS.

## Aircraft

- Registration: [N9845M](https://openairdocs.org/aircraft/N9845M), registered now, S/N 4C, built 1966 (OpenAirDocs)
- Reported make and model: MAULE M-4C
- Registry model: [Maule M-4C](https://openairdocs.org/model/maule-m-4c) (registry code 5460105) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 4C
- Airframe hours: 1047
- Engines: CONTINENTAL O-300-A 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Watonwan Flyers
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 1, 1985
- Departed: FRM, FAIRMONT, MN
- Airport: BYO, Blue Earth, runway 16, 3,400 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; airline transport, flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 9,000 total, 1 in this make and model, 7,800 as pilot in command, 90 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 12 knots
- Visibility: 7 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 57 °F, dew point 45 °F
- Altimeter: 29.00 inHg
- Observed at: FRM, 14 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 19851014052419A](https://openairdocs.org/incident/19851014052419A), Oct 14, 1985: Maule M4C, Blue Earth, MN, Substantial damage. Nosed over after wheel landing in a crosswind. Wheel parts located on runway.

## Other investigations on N9845M (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 IAD75FIG05](https://openairdocs.org/ntsb/IAD75FIG05), Sep 26, 1974: Maule M-4C (N9845M), Easton, MD, 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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