ERA19LA123 · Beech A100 UNDESIGNAT
Beech A100 UNDESIGNAT · Accident: landing gear collapse
From Capital City Airport (CXY) to Rostraver Airport (FWQ)
Event
- NTSB case
- ERA19LA123
- 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
Beech A100 UNDESIGNAT
- Aircraft type
- Beechcraft 100
- 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
- N945WS
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Capital City Airport (CXY), Harrisburg, PATo Rostraver Airport (FWQ), Monongahela, PA
- Aircraft age
- About 47 years (built 1972)
- 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
- 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
- Landing gear collapse
- 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
- Aircraft › Aircraft systems
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
According to the pilot, while lowering the landing gear handle in preparation for landing, he and the co-pilot heard a crunching noise. He noticed that the landing gear indicator lights did not turn green, and the crew was unable to extend the gear manually. The crew diverted to an airport with emergency equipment and a control tower. Following a fly-by, the tower controller reported that the landing gear appeared to be extended; however, during the landing roll, the left main landing gear collapsed, followed by the right main landing gear, resulting in substantial damage to the airplane. Examination of the airplane revealed that the main landing gear mechanical linkage was compromised, and the right main landing gear actuator shaft was broken. A mechanic examined the airplane and found that the actuator pinion bearing support had separated from the actuator for undetermined reasons, causing a side load to the actuator and initiating the fracture.
Probable cause
A landing gear collapse due to the separation of the actuator pinion bearing support from the actuator, which resulted in the failure of the actuator shaft.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA19LA123
- Event ID
- 20190312X50739
- Case number
- ERA19LA123
- 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. 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: 50d02543e5c5ab20d11192d5f67a138cef22a63e612f0023a03d88ec8729f198; retrieved 2026-09-16T08:39:26.763Z.