MIA91LA221 · John H. Logan LOGANAIR I
John H. Logan LOGANAIR I · Accident: loss of control in flight en route
From an unrecorded airport to 1X4 · Boynton Beach, FL
Event
- NTSB case
- MIA91LA221
- 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
- 2 · 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
- Instrument Meteorological Cond
John H. Logan LOGANAIR I
- Aircraft type
- John H Logan LOGANAIR
- 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
- N931JL
- Operator
- John H. Logan · private individual
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 1X4 · Boynton Beach, FL
- 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
- En route · cruise
- 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
- Loss of control in flight
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Visual flight rules (VFR) flight into instrument meteorological conditions (IMC)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Maintenance, replacement, not performed
- Pilot in command › Operation with known deficiencies in equipment, performed
- Pilot in command › Self-induced pressure
- Pilot in command › Spatial disorientation
- Pilot in command › VFR flight into imc, continued
Approximate · Estimated position: the centre of Gainesville, FL, the place the record names. Not the accident site.
NTSB narrative
THE VACUUM PUMP FAILED AND NON-INSTRUMENT RATED PILOT ACCEPTED AN IFR CLEARANCE TO LAND AT GAINESVILLE. DURING THE APPROACH THE PILOT DESCENDED BELOW ASSIGNED ALTITUDE AND CONFLICTED WITH OTHER TRAFFIC. AFTER LANDING THE PILOT DID NOT HAVE THE VACUUM PUMP REPAIRED. THE NEXT MORNING THE PILOT CALLED FSS AND REQUEST A SPECIAL VFR CLEARANCE TO DEPART GAINESVILLE WHILE IT WAS STILL DARK AND IFR CONDITIONS. SHORTLY AFTER DEPARTURE THE FLIGHT WAS OBSERVED MANEUVERING AT A LOW ALTITUDE AND PITCH UP AND ENTER CLOUDS. THE FLIGHT THEN DESCENDED FROM THE CLOUDS AND COLLIDED WITH THE GROUND.
Probable cause
THE NON-INSTRUMENT RATED PILOT IN COMMAND'S DECISION TO DEPART UNDER SPECIAL VISUAL FLIGHT RULE CLEARANCE IN INSTRUMENT FLIGHT RULES CONDITIONS DURING DARKNESS WITH A FAILED VACUUM PUMP AND RESULTING INOPERATIVE FLIGHT INSTRUMENTS WHICH RESULTED IN AN INFLIGHT LOSS OF CONTROL DUE TO SPATIAL DISORIENTATION.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record MIA91LA221
- Event ID
- 20001212X18149
- Case number
- MIA91LA221
- 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: 9c0b32897f76e906767495d73f2c1cac5bc4bb4f83aafeb418a0a7da45ef6b99; retrieved 2026-09-21T01:33:20.805Z.