CHI95LA008 · Cessna T210R
Cessna T210R · Accident: partial loss of engine power (mechanical failure) en route
From Grand Rapids Itasca Co-Gordon Newstrom field (GPZ) to Glasgow Valley County Airport Wokal Field (GGW)
Event
- NTSB case
- CHI95LA008
- 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
Cessna T210R
- Aircraft type
- Cessna 210
- 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
- CGHRG
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Grand Rapids Itasca Co-Gordon Newstrom field (GPZ), Grand Rapids, MNTo Glasgow Valley County Airport Wokal Field (GGW), Glasgow, MT
- 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
- En route · cruise
- 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
- Partial loss of engine power (mechanical failure)
- 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
- Engine assembly, cylinder › Failure, total
- Miscellaneous, engine pre-ignition and/or detonation
- Weather condition › Tailwind
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
ACCORDING TO THE PILOT, THE ENGINE BEGAN TO RUN ROUGH WHILE IN CRUISE. HE MADE AN ATTEMPT TO CORRECT THE ENGINE ROUGHNESS BY ADJUSTING BOTH THE MIXTURE CONTROL AND THE POWER SETTING. THE PILOT STATED THE AIRPLANE THEN BEGAN TO LOSE AIRSPEED AND HE WAS FORCED TO MAKE AN EMERGENCY LANDING. HE FLEW TO THE NEAREST AIRPORT, BUT SAID THERE WAS INSUFFICIENT ALTITUDE OR ENGINE POWER TO MANEUVER THE AIRPLANE FOR A LANDING INTO THE WIND. DURING A TAILWIND LANDING, THE AIRPLANE WENT OFF THE DEPARTURE END OF THE RUNWAY INTO A DRAINAGE DITCH AND NOSED OVER. POSTACCIDENT EXAMINATION REVEALED THE NUMBER FOUR CYLINDER HAD SUFFERED A PRE-IGNITION/DETONATION EVENT. EXAMINATION OF THE REMAINING CYLINDERS REVEALED LIGHT COMBUSTION DEPOSITS.
Probable cause
PARTIAL LOSS OF ENGINE POWER DUE TO PREIGNITION AND/OR DETONATION, WHICH RESULTED IN FAILURE OF THE NUMBER 4 CYLINDER. THE UNFAVORABLE TAILWIND FOR LANDING WAS A RELATED FACTOR.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI95LA008
- Event ID
- 20001206X02403
- Case number
- CHI95LA008
- 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: 55ce5ef3d272e2260e824789131e587fbf2058cdbc328925cc1578fd3d3ae568; retrieved 2026-09-21T22:28:13.047Z.