Maule M-4 accident near Cascade, Idaho, June 2, 2021
On June 2, 2021 at about 4:05 pm local time, a 1964 Maule M-4, registered N4718T, was substantially damaged in an accident during taxi (from runway) near Cascade, Idaho (Mahoney Creek Usfs airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
The pilot’s failure to maintain clearance from a ditch, which resulted in impact with terrain.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 2, 2021 · about 4:05 pm local time
- Place
- Cascade, Idaho · Mahoney Creek Usfs · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Maule M-4, built 1964 · all M-4s on the register
- Registration
- N4718T · registry record · serial 61
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot of the tailwheel-equipped airplane reported that, after landing, and during taxi to the end of the runway to turn around to park, he did not see a deep steep ditch at the end of the runway. The airplane traveled into the ditch as the pilot applied full right rudder and full right brake in an attempt to turn, however, the airplane continued to slide into the ditch where the left-wing impact terrain. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Loss of control on ground during taxi (from runway) defining event
The NTSB's findings
- Personnel issues › Psychological › Attention/monitoring › Monitoring environment › Pilot
- Environmental issues › Physical environment › Terrain › Sloped/uneven terrain › Effect on equipment
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 1,045 hours in all; 615 in this make and model; 24.4 in the last 90 days; 24.4 in the last 30 days; 977 as pilot in command
- Last flight review: May 17, 2021
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: unk
- Injury: no injuries
The aircraft
- Airframe total time: 2,750.9 hours
- Last inspection: annual inspection, October 1, 2020; 31 hours since
- Maximum gross weight: 2,100 lb
- Seats: 4
- Landing gear: fixed
- Engine: Continental O-300-A (piston); 2,656 hours total
The flight
- Departed from: 85U Soldier Bar ID
- Flight plan: none
- Runway 04, 2,150 ft by 15 ft
Weather at the time
- Light: daylight
- Wind: from 060° at 3 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 70°F (21°C), dew point 43°F (6°C)
- Altimeter: 30.12 inHg
- Observation at 9:55 am from KLLJ, 33 miles away
Weather report (METAR): METAR KLLJ 021555Z AUTO 06003KT 10SM CLR 21/06 A3012 RMK AO2 SLP136 T02060061=
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flig | 1 |
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number WPR21LA229.