DEN82DA073 · Hughes 369D (500D)
Rocky Mountain Helicopters Hughes 369D (500D) · Accident: airframe, component or system failure while maneuvering
From Henefer, UT to Henefer, UT
Event
- NTSB case
- DEN82DA073
- 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
Hughes 369D (500D)
- Aircraft type
- Hughes 369
- 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
- N8684F
- Operator
- Rocky Mountain Helicopters
- Onboard fatalities
- Unknown
- Route
- From Henefer, UTTo Henefer, UT
- 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
- Maneuvering
- 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
- Rotor drive system, clutch assembly › Failure, total
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE HELICOPTER MADE A HARD LANDING AFTER THE PILOT EXPERIENCED A POWER TRAIN FAILURE WHILE FLYING LOW AND SLOW. THE WEATHER WAS VMC AND A VFR FLIGHT PLAN WAS FILED. THE CREW WAS SEARCHING FOR LOST MINING EQUIPMENT IN A LOW SLOW SEARCH PATTERN. THE PILOT HEARD THE ENGINE OUT AUDIO IN HIS HEAD SET AS HE WAS LOOKING OUT. HE MANAGED TO AVOID TREES WHILE DESCENDING BUT MADE A HARD LANDING ON A STEEP SLOPE AND THE HELICOPTER ROLLED OVER.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record DEN82DA073
- Event ID
- 20020917X01957
- Case number
- DEN82DA073
- 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: 288cf8649d4405b147eb99ac7163b368b671729974cc9a2a8d6078d362a4012e; retrieved 2026-09-22T03:06:12.359Z.