FTW99LA149 · Weatherly 620B
Weatherly 620B · Accident: loss of control on ground/water during takeoff
Event
- NTSB case
- FTW99LA149
- 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
Weatherly 620B
- Aircraft type
- Weatherly 620
- 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
- N6305W
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 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
- Takeoff · roll/run
- 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 on ground/water
- 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 › Unsuitable terrain or takeoff/landing/taxi area, selected
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The commercial pilot lost control of the agricultural airplane after the left main landing gear tire bogged down in a muddy area near a partially flooded area of the private airstrip, approximately 1,000 feet from the approach end of the airstrip. The airplane veered slightly to the left and nosed over coming to rest inverted on the airstrip, approximately 330 feet from the flooded area. The operator reported that the surface of his 4,200 foot dirt airstrip was 'heavily saturated due to heavy rains during the night and early morning hours.' The operator added that this was the pilot's first flight of the day. The 5,000 hour pilot, who had accumulated 711 hours in the make and model, had been working for the operator for the last 10 years.
Probable cause
The pilot's selection of unsuitable terrain for takeoff. Contributing to the accident was the soft ground and the standing water on the runway.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW99LA149
- Event ID
- 20001212X18782
- Case number
- FTW99LA149
- 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: 850034d6329a01a28d0e44781bb5bb94448de98ade462b403d89abe9fcbdd255; retrieved 2026-09-21T11:02:40.906Z.