WPR24FA150 · Piper PA-18-150
Piper PA-18-150 · Accident: aerodynamic stall/spin while maneuvering
From Miles City, MT to an unrecorded destination
Event
- NTSB case
- WPR24FA150
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 2 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Piper PA-18-150
- Aircraft type
- Piper PA-18
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- UNREG
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Miles City, MTTo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering · low-altitude flying
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Aerodynamic stall/spin
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Psychological
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot of the tandem seat, non-registered airplane and a passenger were conducting a predator control flight that targeted coyotes on private land. A wildlife control officer on the ground near the designated hunting area was communicating with the pilot via through cell phone and could hear gunfire when the call ended. The control officer attempted to call the pilot back after he expected the flight to have ended but did not determine a need to search for the airplane. A ranch hand located the wreckage later in the day. GPS data recovered from a handheld device found in the airplane wreckage showed that most of the flight was conducted at low altitudes. While engaging wildlife targets, the pilot slowed the airplane to as low as 36 kts groundspeed and performed multiple turns. During the last period of circling maneuvers the airplane slowed to about 25 kts groundspeed while about 113 ft above ground level (agl). The manufacturer’s Pilot’s Operating Handbook for a similar model of airplane indicated that the stall airspeed was 43 mph (37 kts). Examination of the wreckage revealed the airplane impacted terrain in a nearly vertical, nose-down attitude while rotating clockwise. The wreckage signatures and very small debris area were consistent with an aerodynamic stall/spin. While maneuvering at low altitudes and low airspeed, the pilot likely exceeded the airplane’s critical angle of attack, which resulted in an aerodynamic stall/spin at an altitude too low for recovery. The pilot’s use of his cell phone, even with the aid of a hands-free device, likely distracted him from piloting duties. The pilot’s toxicological testing revealed medications that had the potential to cause performance impairment and other medications that were commonly used to treat cold and allergy symptoms; however, toxicological testing did not establish that the pilot was impaired by the medication, nor that he was experiencing cold or allergy symptoms at the time of the accident.
Probable cause
The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, resulting in an aerodynamic stall and subsequent impact with terrain. Contributing to the accident was the pilot’s distraction by his cell phone use while maneuvering.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR24FA150
- Event ID
- 20240515194259
- Case number
- WPR24FA150
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, cause areas. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: cfbcd8ea91d10d1e1319858d7bc0e4790c1eabbfbe2e35e7bfe476c0f7742314; retrieved 2026-09-15T08:14:12.356Z.