# NTSB DEN84LA050: Mitsubishi MU-2B-60, N477MA, Richfield, UT, November 5, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: November 4, 1983, 19:30 local (Nov 5, 1983, 02:30 UTC)
- Place: Richfield, UT
- Coordinates: 38.750846, -112.0998 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7508&lon=-112.0998&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16306
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA050
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16306/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA050

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Propeller/rotor contact to person, standing - engine(s) operating
  - light condition - dark night (contributing factor)
  - supervision - inadequate, pilot in command (cause)
  - instructions,written/verbal - not followed, passenger (cause)

## Analysis

THE ACFT PROPELLER STRUCK A 12 YEAR OLD MALE PASSENGER AFTER HE DEPLANED. THE ACCIDENT OCCURRED ON AN UNLIGHTED RAMP AT ABOUT 1930 HOURS MST. THE BOY HAD WALKED FORWARD ALONG THE FUSELAGE TO LOOK INTO THE COCKPIT WHEN HE WAS HIT. HIS FATHER WAS IN THE COCKPITS LEFT SEAT. THE SHUTDOWN OF ENGINES HAD BEEN SLOW THE PLT SAID BECAUSE THIS WAS BASICALLY A TRAINING MISSION. THE LEFT PROPELLER WAS WINDMILLING TO A STOP WHEN THE BOY WAS HIT. ACCORDING TO THE LINE CREWS THIS BOY WAS KNOWN TO JUMP OUT THE ACFT AND RUN AROUND THE RAMP. THE COMPANY PRESIDENT WHO WAS THE ACTING PLT AT THE TIME OF THE ACCIDENT SAID 'THE BOY EXITED THE ACFT AGAINST INSTRUCTIONS AND VERBAL WARNINGS.'

## Aircraft

- Registration: N477MA (not matched to a registry record)
- Reported make and model: MITSUBISHI MU-2B-60
- Category: Airplane
- Serial number: 1551S.A.
- Airframe hours: 195
- Engines: GARRETT 1TFE 731 turbo prop
- Damage: No damage
- Flight: Personal, Part 91
- Registered owner: Care Enterprises
- Airworthiness certificate: Standard, Normal
- Departed: SLC, SALT LAKE CITY, UT
- Flight plan: VFR
- Airport: RIF, Richfield

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,000 total, 25 in this make and model, 1,774 as pilot in command, 45 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 25 °F, dew point -0 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19831104064549A](https://openairdocs.org/incident/19831104064549A), Nov 4, 1983: Mtsbsi MU2B60, Richfield, UT. Young boy opened door and stepped out of aircraft walking into windmilling prop during shut down.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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