CHI08CA213 · Air Tractor AT-401
Styron Aerial Application Air Tractor AT-401 · Accident: loss of engine power (partial) during initial climb
From Ida Grove Municipal Airport (IDG) to an unrecorded destination
Event
- NTSB case
- CHI08CA213
- 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
- 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
Air Tractor AT-401
- Aircraft type
- Air Tractor AT-401
- 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
- N45029
- Operator
- Styron Aerial Application
- Onboard fatalities
- Unknown
- Route
- From Ida Grove Municipal Airport (IDG), Ida Grove, IATo 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
- Initial climb
- 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 engine power (partial)
- 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 power plant
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot stated that the engine was producing 36 inches of manifold pressure and 2,250 rpm during the initial takeoff. Shortly after takeoff, he noticed the airplane was not climbing and the manifold pressure dropped to 28 inches or less. The pilot landed the airplane in a soybean field and after a ground roll of about 100 feet, the airplane contacted an embankment. The airplane twisted to the right and became airborne for a distance of approximately 100 feet prior to contacting the terrain and sliding to a stop. Post accident inspection of the airplane revealed the turbocharger blower had failed.
Probable cause
A failure of the turbocharger blower which resulted in the partial loss of power. Factors associated with the accident were the low altitude of the airplane and the embankment.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI08CA213
- Event ID
- 20080916X01469
- Case number
- CHI08CA213
- 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, coordinates. 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: 0aadc1a174d4c334ce40df97a4c72ba394bec18c1e4c5fcf5c9bb9ffde31496a; retrieved 2026-09-15T10:13:26.616Z.