ERA19FA161 · Cessna 172 N
Cessna 172 N · Accident: VFR encounter with IMC en route
From State College Regional Airport (UNV) to Pittsburgh/Butler Regional Airport (BTP)
Event
- NTSB case
- ERA19FA161
- 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
- 2 · 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
- Instrument Meteorological Cond
Cessna 172 N
- 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
- N733KZ
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From State College Regional Airport (UNV), State College, PATo Pittsburgh/Butler Regional Airport (BTP), Butler, PA
- Aircraft age
- About 43 years (built 1976)
- 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 · cruise
- 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
- VFR encounter with IMC
- 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 as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
**This report was modified on June 23, 2021. Please see the public docket for this investigation to view the original report.**
The pilot was conducting a personal, cross-country flight with one passenger onboard. The pilot received a formal preflight weather briefing, which warned of instrument and marginal visual meteorological conditions as well as mountain obscuration conditions due to clouds near the departure airport and along the airplane’s expected route of flight. Although the pilot had filed an instrument flight rules flight plan for the flight, he advised air traffic control at the departure airport that he would be departing under visual flight rules (VFR). Flight track and weather data showed that, after departure, the airplane proceeded toward mountainous terrain that was likely obscured by clouds. A witness near the accident site reported seeing the airplane flying below the clouds (fog) before losing sight of it behind trees and then hearing the impact.
Postaccident examination of the airframe and engine revealed no evidence of any preaccident mechanical failures or malfunctions that would have precluded normal operation. Based on the damage signatures displayed by the wreckage and trees surrounding the accident site, it is likely that the airplane impacted trees and terrain in a relatively level, slightly right wing down flight attitude and that the engine was producing power at the time of the impact.
Although the pilot held an instrument rating, he did not meet the necessary currency requirements to undertake an instrument flight rules flight. It is likely that, after departing, the pilot encountered deteriorating weather conditions that obscured the mountainous terrain, and resulted in the pilot’s controlled flight into terrain.
Probable cause
The pilot’s continued visual flight rules flight into instrument meteorological conditions, resulting in controlled flight into trees and terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA19FA161
- Event ID
- 20190501X50237
- Case number
- ERA19FA161
- 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, 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: 7a28d9cf95580393c8d4ab99fa52591df5d9918668327f570e4114d74a78a9c2; retrieved 2026-09-15T06:57:17.646Z.