# NTSB WPR25LA152: Dehavilland DHC-6-300, N142SA, Boulder City, NV, May 6, 2025

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Limited · Preliminary report
- Date: May 6, 2025, 14:50 local (21:50 UTC)
- Place: Boulder City, NV · 35.74, -114.64 7nm SE BVU
- Coordinates: 35.949633, -114.8606
- Nearby events: https://openairdocs.org/map.md?lat=35.9496&lon=-114.8606&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute-cruise: Windshear or thunderstorm](https://openairdocs.org/ntsb-events/390)
- Highest injury: No injuries
- Injuries: 13 uninjured
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 200129
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR25LA152
- NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200129/pdf
- Page: https://openairdocs.org/ntsb/WPR25LA152

## Preliminary report

On May 6, 2023, about 1450 Pacific daylight time, a DeHavilland DHC-6-300, N142SA, was substantially damaged when it was involved in an accident near Boulder City, Nevada. The 2 pilots and 11 passengers were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 135 non-scheduled air taxi flight. The pilot reported that while operating in visual flight rules (VFR) weather conditions from Grand Canyon Bar Ten Airstrip (1Z1) Whitmore, Arizona to Boulder City Municipal Airport (BVU). While enroute to BVU, they observed adverse weather along their route of flight and diverted south with the intention of landing at Henderson Executive Airport (HND), Henderson, Nevada if the weather worsened. The pilot stated that the weather conditions improved east of BVU and they turned towards the airport. About 7 miles southeast of BVU while maneuvering for weather, the airplane encountered brief light turbulence and hail that lasted about 5 to 6 seconds. The pilot stated that following the encounter, they landed at BVU uneventfully. A convective significant Meteorological Information (SIGMET) 11W was valid on the day of the accident from 1355 to 1459, 20 miles southeast of Las Vegas, Nevada. An isolated thunderstorm was moving from 300° at 15 knots with the tops of the clouds ay about 33,000 ft. The valid time of the report ended at 1555. Post flight examination of the airplane revealed substantial damage to both wings, , vertical stabilizer, and horizontal stabilizers.

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute-cruise: Windshear or thunderstorm](https://openairdocs.org/ntsb-events/390) (defining event); cases with it: [Dehavilland DHC-6-300, 2 cases](https://openairdocs.org/ntsb-events/390/sequence.md?model=2802630), [All aircraft, 224 cases](https://openairdocs.org/ntsb-events/390/sequence.md)

## Aircraft

- Registration: [N142SA](https://openairdocs.org/aircraft/N142SA), registered now, S/N 241, built 1969 (OpenAirDocs)
- Reported make and model: DEHAVILLAND DHC-6-300
- Registry model: [Dehavilland DHC-6-300](https://openairdocs.org/model/dehavilland-dhc-6-300) (registry code 2802630) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 241
- Year built: 1969
- Airframe hours: 70008.2
- Damage: Substantial damage
- Flight: Aerial observation, Part 135
- Operator: Monarch Enterprises Inc
- Registered owner: Monarch Enterprises Inc
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, March 20, 2025, 565 hours before
- Departed: 1Z1, Whitmore, AZ
- Destination: BVD, Boulder City, NV
- Airport: BVU, Boulder City Muni
- Equipment: ADS-B, Stall warning system, Satellite tracking device, Onboard weather, Electronic flight bag or handheld device, Data recorder

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 15 knots, gusting 27
- Visibility: 0.75 statute miles
- Lowest ceiling: 600 ft broken
- Temperature: 59 °F, dew point 52 °F
- Altimeter: 29.85 inHg
- Turbulence: Light
- Observed at: KBVU
- METAR: KBVU 062135Z AUTO 04015G27KT 3/4SM VCTS RA BKN006 OVC030 15/11 A2985 RMK AO2

## 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 20250506004949A](https://openairdocs.org/incident/20250506004949A), May 6, 2025: Dehavilland DHC-6-300, Boulder City, NV, Substantial damage. On may 6, 2025, at approximately 2140Z/14:50 mountain standard time (MST), a Dehavilland DHC-6-300, operated under 14 code of federal regulations part 135…

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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