MIA91LA004 · Robinson R22 B
Crest One Helicopter Robinson R22 B · Accident: partial loss of engine power (non-mechanical) on approach
Event
- NTSB case
- MIA91LA004
- 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
Robinson R22 B
- Aircraft type
- Robinson R22
- Category
- Helicopter
- 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
- N224SW
- Operator
- Crest One Helicopter
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 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
- Approach · VFR pattern final
- 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
- Partial loss of engine power (non-mechanical)
- 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
- Pilot in command › Carburetor heat, not used
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE CFI STATED THAT DURING THE DOWNWIND LEG, HE WAS EXPLAINING A MANEUVER TO A STUDENT WHILE SIMULTANEOUSLY REDUCING THROTTLE & LOWERING COLLECTIVE. HE DID NOT APPLY CARBURETOR HEAT. THE TURN TO BASE WAS SLOW & AFTER REALIZING THAT THE FLT WOULD NOT LAND AT THE PLANNED TOUCHDOWN POINT, THE CFI APPLIED POWER TO GO-AROUND BUT THE ENG WAS SLOW TO RESPOND. DURING THE RUN-ON LANDING, THE HELICOPTER ROLLED OVER AFTER COLLIDING WITH A DIRT MOUND. THE ENG & ITS SYSTEMS WERE EXAMINED BY AN FAA AIRWORTHINESS INSPECTOR WHO REPORTED THAT THERE WAS NO FAILURE OR MALFUNCTION. ACCORDING TO THE ICING PROBABILITY CHART USING TEMP & DEW POINT TAKEN AT AN ARPT 12 NM SE OF THE ACCIDENT SITE 10 MINUTES BEFORE THE ACCIDENT, CONDITIONS WERE FAVORABLE FOR VISIBLE ICING AT GLIDE & CRUISE POWER.
Probable cause
FAILURE TO USE CARBURETOR HEAT.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record MIA91LA004
- Event ID
- 20001212X24505
- Case number
- MIA91LA004
- 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: 68fbfa7501321abf43a3bedc21fb17cc7994ce3f13f4817a9a3165d7ada8d6da; retrieved 2026-09-23T05:15:31.462Z.