MIA00LA013 · British Aerospace HS 125-700A HS 125-700
British Aerospace HS 125-700A HS 125-700 · Accident: airframe, component or system failure
From Harry Reid International Airport (LAS) to Moore County Airport (SOP)
Event
- NTSB case
- MIA00LA013
- 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
British Aerospace HS 125-700A HS 125-700
- Aircraft type
- British Aerospace HS-125
- 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
- N34GG
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Harry Reid International Airport (LAS), Las Vegas, NVTo Moore County Airport (SOP), Southern Pines, NC
- 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
- Unknown
- 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
- Airframe, component or system failure
- 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 › Overload
- Landing gear › Undetermined
- Pilot in command › Gear extension, not possible
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Upon entering the traffic pattern at the destination airport, the landing gear was extended using the normal and alternate methods, the left main landing gear did not extend. The flight departed the traffic pattern, orbited the airport an attempts to extend the left main landing gear were unsuccessful. The flight diverted for an airport with Fire Rescue, performed a fly-by, then climbed to altitude where 'G-loading maneuvers were performed to extend the left main landing gear. The gear could not be extended. The airplane was landed with the left main landing gear retracted. Examination of the airplane revealed that the lugs on the cylinder head of the left main landing gear jack were fractured. Metallurgical examination of the fractured lugs of the cylinder head revealed overstress failure; no evidence of progressive (fatigue or stress corrosion) cracking was observed. The cylinder head is a 5,000 cycle life limited component and the failed cylinder head which was installed when the airplane was manufactured, had accumulated 4,751 cycles at the time of failure including the accident landing. The jack attachment and surrounding area required to be inspected every 600 hours, was inspected last 348 hours and 299 cycles earlier; no discrepancies were noted.
Probable cause
The overstress failure of the lugs of the cylinder head of the left main landing gear jack for undetermined reasons. Also, inability of the flight crew to extend the left main landing gear.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record MIA00LA013
- Event ID
- 20001212X20016
- Case number
- MIA00LA013
- 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: b05ee68751ad9540bbd0d121dd0573c01400ca759de70e0f9149b42ebbd23817; retrieved 2026-09-22T13:52:17.266Z.