# NTSB CHI85LA323: Maule M-6, N5646Z, Iron Mountain, MI, July 30, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 30, 1985, 15:00 local (20:00 UTC)
- Place: Iron Mountain, MI
- Coordinates: 45.820957, -88.060455 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.8210&lon=-88.0605&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13171
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA323
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13171/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA323

## 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
  - ground loop/swerve - performed, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, landing - roll
  - ground loop/swerve - performed, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (cause)

## Analysis

DURING LANDING ROLLOUT THE AIRCRAFT GROUND LOOPED AND THE LEFT WING STRUCK THE RUNWAY. THIS WAS THE PILOT'S FIRST FLIGHT IN THIS MODEL CONVENTIONAL GEAR AIRCRAFT.

## Aircraft

- Registration: N5646Z (not matched to a registry record)
- Reported make and model: Maule M-6
- Category: Airplane
- Serial number: 7393C
- Airframe hours: 319
- Engines: LYCOMING IO-540 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Walter B. Neufeld
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 15, 1985
- Departed: BDJ, BOULDER JNCT., WI
- Airport: IMT, Ford, runway 1, 6,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 923 total, 1 in this make and model, 792 as pilot in command, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 70 °F
- Altimeter: 30.00 inHg

## 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 19850730037999A](https://openairdocs.org/incident/19850730037999A), Jul 30, 1985: Maule M6235, Iron Mountain, MI, Substantial damage. Lost directional control and ground looped on rollout. Familiarization flight with non CFI owner in right seat.

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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