FTW99LA137 · Air Tractor AT-502A
M and M Air Service Air Tractor AT-502A · Accident: loss of control in flight during landing
From No airport to an unrecorded destination
Event
- NTSB case
- FTW99LA137
- 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
- 0 · 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
Air Tractor AT-502A
- Aircraft type
- Air Tractor AT-502
- 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
- N166MM
- Operator
- M and M Air Service
- Onboard fatalities
- Unknown
- Route
- From No airportTo 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 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
- Landing · flare/touchdown
- 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
- 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
- Pilot in command › Compensation for wind conditions, inadequate
Approximate · Estimated position: the centre of Huffman, TX, the place the record names. Not the accident site.
NTSB narrative
The pilot of the agricultural airplane was performing his 16th approach of the day into the private airstrip when, during the landing flare, 'a gust of wind picked up [the] left wing and moved [the aircraft] to the right.' The right wing contacted a strip of grass, which was approximately 5 feet tall, along the right side of the runway. The aircraft subsequently 'cartwheeled' to the right and came to rest inverted on the west side of the runway. The pilot reported winds at the time of the accident to be from 130 degrees at 15 knots with gusts to 20 knots.
Probable cause
The pilot's inadequate compensation for the wind conditions during landing. Factors were the wind gusts and the high vegetation beside the runway.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW99LA137
- Event ID
- 20001212X18772
- Case number
- FTW99LA137
- 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: 01591dde47eeeed81b00387fa83292a7db46a5ddb441ff5aae1871bb8d24c287; retrieved 2026-09-22T15:15:52.285Z.