DEN04LA098 · Cessna T210N
Cessna T210N · Accident: total loss of engine power (mechanical failure) en route
From Provo Municipal Airport (PVU) to Kimball Municipal Robert E Arraj Field (IBM)
Event
- NTSB case
- DEN04LA098
- 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
- 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
Cessna T210N
- 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
- N5408A
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Provo Municipal Airport (PVU), Provo, UTTo Kimball Municipal Robert E Arraj Field (IBM), Kimball, NE
- 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
- 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
- Accessory drive assembly, drive shaft › Sheared
- Other maintenance personnel › Maintenance, installation, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot made a intentional wheels up landing after first experiencing a low voltage light followed by a loss of engine power. The examination of the engine revealed the number 2 bearing and crankshaft had shifted forward with subsequent failure of the alternator drive shaft and other accessories, as well as, damage to other components of the power drive train. Examination of the aircraft revealed the adhesive (Permatex) for the crankcase seam string was also applied on the crankcase halves surfaces, inside the seam face, and on the through bolts. According to the manufacturer, the adhesive should only be applied to hold the string in place. The excess sealant contributed to either the loss of torque or under-torquing of the through-bolts. The engine had 3692 hours tachometer time when it was overhauled in 1993 when the time between overhaul was extended to 1600 hours. In 2000, the engine had accumulated 1108 hours since the overhaul, when six new, "classic cast" cylinder assemblies, along with new pistons, rings, and piston pins, were installed. In order for this work to have been accomplished, the crankcase would have had to been separated. At the time of the accident, the engine had 5435 hours tachometer time at and 1743 hours since the overhaul.
Probable cause
the improper reassembly of the engine following major overhaul (application of Permatex over entire crankcase surfaces). Contributing factors included the number 2 main bearing and crankshaft shifting forward, causing the alternator drive shaft and other accessory gears to fail, which disabled the camshaft.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN04LA098
- Event ID
- 20040708X00934
- Case number
- DEN04LA098
- 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: 6b58d0ec334b3016c7d3b6455c574996d48cad735cbbe1274734e155511ac74a; retrieved 2026-09-22T07:10:20.993Z.