CHI95LA252 · Stevens ACRO II
Stevens ACRO II and Cessna 172F · Accident: collision between aircraft (not in flight) while taxiing
Event
- NTSB case
- CHI95LA252
- 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
Aircraft 1 · Stevens ACRO II
- Aircraft type
- Stevens ACRO
- 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
- N40LF
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Dodge County Airport (UNU), DODGE COUNTY, WITo Wittman Regional Airport (OSH)
- 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
- Taxi · from runway
- 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
- Collision between aircraft (not 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
- Minor
Aircraft 2 · Cessna 172F
- Aircraft type
- Cessna 172
- 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
- N5542R
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Freeport/Dornink Airport (C86), DAKOTA, ILTo Wittman Regional Airport (OSH)
- 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
- Taxi · from runway
- 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
- Collision between aircraft (not 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 › Clearance, not maintained
- Pilot of other aircraft › Clearance, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot of the Acro, N40LF, reported that at the request of the control tower he landed mid-point on the runway, and behind the Cessna 172, N5542R. During the ground roll, the Acro impacted the right wing of the Cessna. The pilot of the Acro stated 'forward visibility is very restrictive in this model with the tail down.' The pilot of the Cessna reported that he was taxiing on the runway after landing. He was about to make a left turn off the runway when the Acro impacted his airplane's right wing.
Probable cause
the failure of the pilot of the Acro II, N40LF, to maintain clearance from the Cessna 172, N5542R.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI95LA252
- Event ID
- 20001207X03922
- Case number
- CHI95LA252
- 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: ab49295c1e2eb5828f2c7b0acbf83391531192d449632da118ba0b02fc3ff2fd; retrieved 2026-09-22T23:31:51.484Z.