Prompt Air Cessna T210M accident
Cessna T210M · Accident: total loss of engine power (mechanical failure) en route
From Bowman Field (LOU) to Abraham Lincoln Capital Airport (SPI)
Event
- NTSB case
- CHI92LA094
- 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
- Charter & commuter
- 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 T210M
- 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
- N732TR
- Operator
- Prompt Air
- Onboard fatalities
- Unknown
- Route
- From Bowman Field (LOU), Louisville, KYTo Abraham Lincoln Capital Airport (SPI), Springfield, IL
- 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 135: Air Taxi & Commuter
- 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
- Total 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, crankshaft › Fatigue
- Engine assembly, crankshaft › Fractured
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE ACCIDENT AIRPLANE SUSTAINED SUBSTANTIAL DAMAGE DURING A FORCED LANDING FOLLOWING A COMPLETE LOSS OF ENGINE POWER. INSPECTION DISCLOSED A FRACTURED CRANKSHAFT. A METALLURGICAL EXAMINATION OF THE CRANKSHAFT REVEALED LADDER CRACKING AND A FATIGUE FRACTURE BETWEEN THE NUMBER 3 AND NUMBER 5 MAIN BEARING JOURNALS. THE CRANKSHAFT WAS A USED CRANKSHAFT WHICH WAS INSPECTED AND INSTALLED AS PART OF A 'ZERO TIME' OVERHAULED ENGINE. NO PREEXISTING METALLURGICAL ANOMALIES WERE DISCOVERED DURING THE POSTACCIDENT METALLURGICAL INSPECTION.
Probable cause
THE TOTAL LOSS OF ENGINE POWER DUE TO A FATIGUE-FRACTURED CRANKSHAFT.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI92LA094
- Event ID
- 20001211X14089
- Case number
- CHI92LA094
- 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: 8508f7c570be251295b4e6c367fd8297c22715e4c19ddb16cd34fc26c75277bb; retrieved 2026-09-18T18:48:09.620Z.