MIA90LA133 · Cessna 210A
Cessna 210A · Accident: loss of engine power en route
From St. Petersburg Clearwater International Airport (PIE) to an unrecorded destination
Event
- NTSB case
- MIA90LA133
- 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 210A
- 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
- N6697X
- Operator
- Heinz, Charles D. · private individual
- Onboard fatalities
- Unknown
- Route
- From St. Petersburg Clearwater International Airport (PIE), ST PETERSBURG, FLTo 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 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
- Loss of engine power
- 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 › Mixture, improper use of
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
ACCORDING TO THE PLT, THE FLT DEPARTED AFTER A NORMAL ENG RUN-UP WITH COWL FLAPS OPEN. DURING NORMAL CRUISE FLT, HE LEANED THE MIXTURE TO 50 DEGS RICH OF PEAK, BUT WHILE RETURNING TO LAND, HE OBSERVED THE EGT GAUGE INDICATE PAST THE MAXIMUM RED LINE LIMIT. HE FURTHER STATED THAT THE ENG BEGAN 'FALTERING.' HE PUSHED THE MIXTURE TO FULL RICH, REPOSITIONED THE FUEL SELECTOR, TURNED THE ELECTRIC BOOST PUMP SWITCH TO HIGH, AND REPOSITIONED THE MAG SWITCH FROM BOTH TO LEFT, RIGHT, THEN BACK TO BOTH WITH NEGATIVE RESULTS. AFTER TOUCHDOWN IN A FIELD DURING THE FORCED LANDING, THE ACFT WAS SUBSTANTIALLY DAMAGED. THE ENG OPERATED NORMALLY DURING THE POST-ACCIDENT ENG RUN. EACH MAGNETO WAS CORRECTLY TIMED. THE POSITION OF THE COWL FLAPS AT THE TIME OF DEPARTURE & PRIOR TO THE ENG FAILURE COULD NOT BE VERIFIED.
Probable cause
THE IMPROPER LEANING OF THE FUEL/AIR MIXTURE RESULTING IN THE LOSS OF ENGINE POWER DUE TO EXCESSIVE INTERNAL ENGINE TEMPERATURE.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record MIA90LA133
- Event ID
- 20001212X23222
- Case number
- MIA90LA133
- 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: 7a847f125cdce1de9a600dd2a8a28a57baa63cb256a0e3cd97069b0f0fa49126; retrieved 2026-09-23T06:10:23.574Z.