# NTSB SEA86LA167: Maule M-5-235C, N5636D, Boise, ID, July 12, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 12, 1986, 13:15 local (19:15 UTC)
- Place: Boise, ID
- Coordinates: 43.539222, -116.290969 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5392&lon=-116.2910&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40441
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA167
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40441/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA167

## Sequence of events

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

- Loss of control - on ground/water, taxi - to takeoff
  - aircraft handling - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
- On ground/water collision with object, taxi - to takeoff
  - object - aircraft parked/standing

## Analysis

WHILE TAXIING FOR TAKEOFF AN INADVERTANT GROUND LOOP OCCURRED DURING WHICH THE ACFT VEERED LEFT STRIKING ANOTHER PARKED ACFT. THE PLT STATED IT FELT AS THOUGH THE TAILWHEEL JAMMED; HOWEVER, POST ACCIDENT EXAM FAILED TO DISCLOSE ANY FAILURE/MALFUNCTION.

## Aircraft

- Registration: [N5636D](https://openairdocs.org/aircraft/N5636D), registered now, S/N 7305C, built 1979 (OpenAirDocs)
- Reported make and model: MAULE M-5-235C
- Registry model: [Maule M-5-235C](https://openairdocs.org/model/maule-m-5-235c) (registry code 5460135) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 7305C
- Airframe hours: 671
- Engines: LYCOMING O-540-J1A5D 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Oswald H. Schmidt
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 19, 1986
- Destination: MYL, MCCALL, ID
- Airport: BOI, Boise Air Terminal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,095 total, 39 in this make and model, 1,008 as pilot in command, 98 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 10 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 75 °F

## 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 19860712032579A](https://openairdocs.org/incident/19860712032579A), Jul 12, 1986: Maule M5235C, Boise, ID, Substantial damage. The pilot lost directional control during taxi and struck another aircraft. No mechanical abnormalities were found.

## Other investigations on N5636D (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 WPR25LA012](https://openairdocs.org/ntsb/WPR25LA012), Oct 1, 2024: Maule M-5-235C (N5636D), Soda Springs, ID, substantial damage. Probable cause: The passenger’s inadvertent application of brakes during landing which resulted in a nose over.

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.