ERA20CA264 · Mooney M20J
Unicorn Aviation Mooney M20J · Accident: hard landing
From Hartford Brainard Airport (HFD) to Block Island State Airport (BID)
Event
- NTSB case
- ERA20CA264
- 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
Mooney M20J
- Aircraft type
- Mooney M20
- 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
- N58066
- Operator
- Unicorn Aviation
- Onboard fatalities
- Unknown
- Route
- From Hartford Brainard Airport (HFD), Hartford, CTTo Block Island State Airport (BID), Block Island, RI
- Aircraft age
- About 35 years (built 1985)
- 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 · flare/touchdown
- Defining eventThe 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
- Hard landing
- 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
- Personnel issues › Task performance
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
Following an uneventful flight, the pilot was landing the airplane at the destination airport. When the airplane touched down, he “experienced and issue” with the right main landing gear. The airplane then veered off the right-side of the runway. The pilot applied corrective rudder inputs to bring the airplane back toward the runway centerline, but it continued past the centerline and off the left side of the runway. The pilot then applied the brakes but found that there was “no action.” The airplane came to rest off the left side of the runway. A postaccident examination of the airplane revealed the nose landing gear had sheared from the fuselage and the main landing gear had collapsed. The propeller was damaged, and the lower fuselage was substantially damaged. The right main landing gear trunnion rod was pushed up and through the top of the right wing. Further examination of the right main landing gear revealed the two front support tubes for the landing gear's shock absorbers were both broken at the base where they attach to the shock absorber assembly. The brakes appeared new and no defects were noted. The right tire spun freely and exhibited two flat spots, one of which was through the tire cord, rupturing it. The tire also displayed rubbing and scuffing marks that were off-axis relative to the direction of travel. Skid marks on the runway were consistent with the damage observed on the right main landing gear tire. Given the damage observed to the right main landing gear, it is likely that the pilot landed the airplane hard. The damage to the landing gear likely resulted in the subsequent loss of control and runway excursion.
Probable cause
A hard landing and subsequent loss of control.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA20CA264
- Event ID
- 20200721X15152
- Case number
- ERA20CA264
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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, coordinates. 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: d9416c1a862482dd599459d7edd10e1f907c9ed7b9c7e2b743a6d283ebe38d91; retrieved 2026-09-16T12:13:22.116Z.