ERA25LA111 · Cirrus Design Corp SR22
Cirrus Design Corp SR22 · Accident: structural icing en route
From Clermont County Airport (I69) to Delaware Municipal Airport (DLZ)
Event
- NTSB case
- ERA25LA111
- 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
- Event fatalities
- Unknown
- 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
Cirrus Design Corp SR22
- Aircraft type
- Cirrus SR22
- 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
- N406SR
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Clermont County Airport (I69), Batavia, OHTo Delaware Municipal Airport (DLZ), Delaware, OH
- Aircraft age
- About 19 years (built 2006)
- 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
- En route
- 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
- Structural icing
- 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
- Environmental issues › Conditions/weather/phenomena
- Personnel issues › Action/decision
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 obtained a preflight weather briefing package over 3 hours before departure on his first of two planned flight legs. The briefing indicated that freezing rain was forecast later that afternoon. He believed he would have more than enough time to make the first flight, perform his function at the destination airport, and fly the return leg while avoiding the freezing rain. Less than an hour after his briefing, and before departure on the first uneventful flight leg, the Aviation Weather Center issued graphical products specifying that freezing rain was forecast along the planned route and during the time of the planned returned leg. Before departing for the return (accident) flight leg, the pilot reviewed hourly surface observations at nearby airports along with weather radar returns on his tablet computer. After departing for the visual flight rules flight, he noted adverse weather and deviated to the east while “staying low.” He then encountered an area of freezing rain and turned on the airplane’s (weeping wing) ice protection system, flew through the area of freezing rain, turned further east, and continued the flight. The airplane again encountered freezing rain resulting in more ice accretion. Recognizing the need to land, the pilot diverted to an alternate airport and although the windshield defroster was functioning and “full heat and 3rd stage of [the] fan [were] on,” the freezing rain overcame the defroster’s ability and the windshield became obscured with ice, which reduced his forward visibility. The pilot flew over the alternate airport and entered a normal airport traffic pattern for landing. He was initially able to view the runway out of the airplane’s side window, but he lost sight of the runway when he turned onto final approach. The airplane subsequently touched down in a field about 385 ft short of the runway threshold. The pilot was seriously injured and airplane’s right wing was substantially damaged during the accident sequence. The pilot reported that there were no preimpact mechanical malfunctions or failures of the airplane or its systems. He further stated that if he had known the flight was going to be in icing conditions he would not have departed.
Probable cause
The pilot’s flight into previously forecasted freezing rain, which resulted in ice accretion, reduced forward visibility, and a subsequent landing undershoot.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA25LA111
- Event ID
- 20250206199656
- Case number
- ERA25LA111
- 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, cause areas. 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: 59e4c13691f5f8778787996a8d576c6a6c43cb405a8018ef826defea1fe399bb; retrieved 2026-09-16T19:38:40.189Z.