WPR15LA176 · Ayres Corporation S2R T34
Morris Ag Air & Sons Ayres Corporation S2R T34 · Accident: loss of control in flight while maneuvering
From Blythe, CA to Blythe, CA
Event
- NTSB case
- WPR15LA176
- 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
- 1 · 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
Ayres Corporation S2R T34
- Aircraft type
- Ayres S2
- 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
- N4018Q
- Operator
- Morris Ag Air & Sons
- Onboard fatalities
- Unknown
- Route
- From Blythe, CATo Blythe, CA
- Aircraft age
- About 35 years (built 1980)
- 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 137: Agricultural
- 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
- Loss of control in flight
- 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
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot was conducting aerial application operations with the assistance of a spotter on the ground. The spotter saw the airplane fly over power lines along the perimeter of an adjacent field. The airplane then entered a nose-high attitude, consistent with the pilot's normal practice of pushing the chemical toward the spreader doors. The airplane continued to climb in a near-vertical ascent until reaching about 500 ft above ground level, after which the airplane entered a nose-low vertical descent that continued to ground contact. An examination of the wreckage revealed that all major components were accounted for at the accident site, and flight control continuity was established. No unusual meteorological phenomena were reported by the closest weather station or observed by witnesses to the accident. It is likely that, during the nose-high maneuver, the airplane exceeded its critical angle-of-attack and experienced an aerodynamic stall.
Probable cause
The pilot's failure to maintain adequate airspeed while maneuvering, which resulted in the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR15LA176
- Event ID
- 20150602X50343
- Case number
- WPR15LA176
- 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. 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: f1d3c476e4cfb8fa304b6e0f59ad18ef77ffbc37939df95266809586f804c7fb; retrieved 2026-09-14T19:15:49.048Z.