LAX00FA230 · Maule M4-210C
Maule M4-210C · Accident: loss of control in flight while maneuvering
From Sonoma Valley Airport (0Q3) to Willows Glenn County Airport (WLW)
Event
- NTSB case
- LAX00FA230
- 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
- 0
- 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
Maule M4-210C
- Aircraft type
- Maule M4
- 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
- N377BC
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Sonoma Valley Airport (0Q3), Sonoma, CATo Willows Glenn County Airport (WLW)
- 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
- First occurrenceThe 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
- Loss of control in flight
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- 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
- Destroyed
Cause areas
- Pilot in command › Airspeed, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
A witness saw the airplane complete the second and last set of two 360-degree turns just above treetop level over a herd of antelope and then descend to ground impact in a steep nose down attitude. This airplane was the last in a group of six other aircraft going to the same destination. Initial responders to the accident site said that a herd of antelope was in the immediate vicinity of the wreckage. Interviews with the other pilot's in the group revealed that both the pilot and passenger were avid animal lovers. They heard the pilot announce in a normal voice that he was turning downwind to base on the Common Traffic Advisory Frequency (CTAF). No other transmissions were heard from the airplane. The ground witness saw the airplane flying northbound at low level, and then enter the first set of steep 360-degree turns. The airplane ended this maneuver descending towards the ground in wings level flight and then rising up again, with a turn southbound. The airplane climbed above the tree line, leveled off, and then entered the second set of steep 360-degree turns, which culminated in the accident. Winds in the area were recorded from the north-northwest at 32 mph gusting to 42 mph. As the pilot turned from crosswind to downwind while in a steep turn about the antelope herd on the ground, it is likely that the airplane encountered strong wind shear like tailwind condition, which resulted in an inadvertent stall/spin. There were no discrepancies noted with the aircraft and engine.
Probable cause
Failure of the pilot to maintain an adequate airspeed margin while maneuvering in steep turns at low altitude in gusty and strong tailwind conditions, which lead to a wind shear encounter and a stall/spin. A contributing factor in the accident was the pilot's diverted attention due to looking at antelope on the ground, and, his decision to attempt the steep turns at low altitude.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX00FA230
- Event ID
- 20001212X21254
- Case number
- LAX00FA230
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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. 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: 53b91507d5ea457e3691be5331d0aba0ee9dd63de55343353287ff4703bdb906; retrieved 2026-09-20T21:09:22.843Z.