CHI98LA282 · Cessna 310R
Cessna 310R · Accident: main gear collapsed during landing
Event
- NTSB case
- CHI98LA282
- 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 310R
- Aircraft type
- Cessna 310
- 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
- N4249C
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 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
- Landing · landing roll
- 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
- Main gear collapsed
- 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
- Landing gear, main gear › Collapsed
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airplane impacted the runway following the collapse of the left main landing gear and subsequent loss of control, during landing rollout. A metallurgical analysis of the spring down lock adjustment screw was performed. The chemical composition of the adjustment screw conformed to the requirements of MIL-S-6758. The hardness of the adjusting screw was found to be 29-30 HRC and in compliance with MIL-S-6758 for 4130 steel. The adjusting screw fracture exhibited characteristics of overload with no indications of fatigue or corrosion crack. The pilot's operating handbook specifies the maximum demonstrated crosswind velocity to be 19 knots at a landing weight of 5400 lbs. at sea level conditions on a standard day. The 1006 CDT ASOS observation indicates wind velocity to be 210 at 8 knots with no gusts. The empty weight of the aircraft was 3816 lbs. Fuel quantity was reported to be 200 gallons. A review of maintenance records showed that the landing gear had been inspected during a phase two progressive inspection in accordance with the Cessna Aircraft's 310 Service Manual Inspection Checklist. There were no entries in the remarks section of the checklist pertaining to the landing gear. The inspection was completed on April 25, 1998. The time since last inspection was 47 hours.
Probable cause
The collapse of the left main landing gear during landing roll for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI98LA282
- Event ID
- 20001211X10277
- Case number
- CHI98LA282
- 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: ab77664e82613cb13ba6c82bc686cced89a454cb1f97d935816af30a660d86b1; retrieved 2026-09-22T17:36:54.436Z.