ATL94LA149 · MILLER, John SKYBOLT
MILLER, John SKYBOLT · Accident: gear collapsed during landing
From Mobile Regional Airport (MOB) to Wittman Regional Airport (OSH)
Event
- NTSB case
- ATL94LA149
- 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
MILLER, John SKYBOLT
- Aircraft type
- Miller John SKYBOLT
- 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
- N919JM
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Mobile Regional Airport (MOB), Mobile, ALTo Wittman Regional Airport (OSH), OSKOSH, WI
- 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
- Landing gear, main gear strut › Fractured
Approximate · Estimated position: the centre of Muscle Shoals, AL, the place the record names. Not the accident site.
NTSB narrative
THE PILOT STATED THAT AFTER TOUCHDOWN ON THE RUNWAY, THE AIRCRAFT VEERED OFF THE RUNWAY TO THE LEFT. EXAMINATION OF THE LEFT MAIN LANDING GEAR REVEALED THAT THE GEAR STRUT WAS FRACTURED, AND THE LEFT LANDING GEAR HAD COLLAPSED. FURTHER EXAMINATION OF THE FRACTURE SURFACE REVEALED A RADIAL AREA ABOUT 3/8 TO 1/2 INCH IN SIZE, THAT WAS QUITE DIFFERENT FROM THE HOMOGENOUS, FINE, GRAY GRANULAR APPEARANCE OF THE REMAINDER OF THE FRACTURE. THE OUTER 1/32 INCH OF THE DIFFERENT APPEARING AREA WAS DISCOLORED BLACK, WHICH REVEALED THE PRESENCE OF A PREVIOUSLY UNDETECTED FRACTURE.
Probable cause
The fatigue failure of the main landing gear strut that resulted in a loss of control.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL94LA149
- Event ID
- 20001206X01675
- Case number
- ATL94LA149
- 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: 394b2cde2df06e995f7d7e8597c1894f620a6da3afcbf00746836f45e04824f5; retrieved 2026-09-23T00:52:56.235Z.