CHI99LA156 · Beech 99A
Beech 99A · Accident: gear collapsed during landing
From Bemidji Regional Airport (BJI) to an unrecorded destination
Event
- NTSB case
- CHI99LA156
- 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
Beech 99A
- Aircraft type
- Beechcraft 99
- 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
- N133BA
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Bemidji Regional Airport (BJI)To 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
- 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
- Hydraulic system, actuator › Failure
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot said that after takeoff and raising the landing gear, the red warning light in the landing gear handle failed to go out. The pilot recycled the landing gear, but could not get the red light to go out. On return to the airport, the pilot lowered the landing gear handle down, but nothing happened. He recycled the handle two additional times with no results. The pilot overflew the airport and confirmed that the landing gear were still up. The pilot manually pumped the landing gear down. Only the nose gear and right main gear green indicator lights illuminated. The pilot overflew the airport again. He was told that the three gear were down. During the landing, the pilot touched down on the right main gear first, and then gently lowered the left main gear to the runway. The landing gear held. As the pilot applied reverse thrust, the left main gear suddenly collapsed. The airplane slid off of the left side of the runway and came to a stop in the grass. Examination of the airplane revealed no anomalies.
Probable cause
Failure of the left main landing gear actuator for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI99LA156
- Event ID
- 20001212X18725
- Case number
- CHI99LA156
- 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: b16aee3a66136f5532266a682658d324f835b9b6d174a6a7f9de4b8543ffdbfe; retrieved 2026-09-22T15:12:17.563Z.