CHI94LA125 · Cessna T210-M
Cessna T210-M · Accident: gear not extended on approach
From Addison Airport (ADS) to an unrecorded destination
Event
- NTSB case
- CHI94LA125
- 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 T210-M
- 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
- N732YK
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Addison Airport (ADS), Addison, TXTo 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
- Approach
- 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
- Gear not extended
- 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
- Hydraulic system, fitting › Separation
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
WHILE LOWERING THE WHEELS FOR LANDING, THE LEFT MAIN LANDING GEAR DOOR ACTUATOR PISTON SEPERATED FROM ITS CYLINDER, RESULTING IN A TOTAL LOSS OF HYDRAULIC FLUID. THE LEFT MAIN AND NOSE WHEEL LOCKED DOWN, AND THE RIGHT WHEEL REMAINED IN A TRAILING POSITION. AFTER FLYING FOR 2 MORE HOURS ATTEMPTING VARIOUS METHODS OF LOCKING THE RIGHT MAIN WHEEL DOWN, THE PILOT ELECTED TO LAND. DURING ROLLOUT, THE AIRPLANE DEPARTED THE RUNWAY AND SUSTAINED SUBSTANTIAL DAMAGE. THE SNAP RING WHICH RETAINS THE ROD END IN THE HYDRAULIC CYLINDER WAS INTACT BUT HAD SEPARATED FROM ITS RETENTION GROOVE. NO DAMAGE WAS APPARENT TO THE SNAP RING GROOVE. THE HYDRAULIC CYLINDER WAS REASSEMBLED AND ACTUATION TESTS WERE NORMAL WITH NO LEAKS. THERE WAS NO RECORD OF MAINTENANCE PERFORMED ON THE ACTUATOR WITHIN THE LAST 8 YEARS. LABORATORY INSPECTION REVEALED THAT THE GROOVE AND CYLINDER WERE MACHINED ACCORDING TO SPECIFICATIONS. THERE WAS A SLIGHT DEFORMATION OF THE GROOVE LIP, BUT IT COULD NOT BE DETERMINED TO BE PRE-EXISTING.
Probable cause
The seperation of the landing gear door actuator, resulting in total loss of hydraulic fluid.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI94LA125
- Event ID
- 20001206X00886
- Case number
- CHI94LA125
- 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: 28fe1329373472f097f3362a2d51942d6ce8fc8b67baaf28708c0f31b40a6d40; retrieved 2026-09-23T01:12:59.306Z.