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Accidents · NTSB GAA17CA404 · Final report

Eurocopter AS 350 accident near King Vale, California, July 11, 2017

On July 11, 2017 at about 10:10 pm local time, a 2002 Eurocopter AS 350 (helicopter), registered N357PJ, was substantially damaged in an accident during landing near King Vale, California. It was an aerial observation flight under general aviation rules (Part 91). 6 people had minor injuries. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot’s failure to maintain clearance from trees while landing in a dusty, unimproved landing zone.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
July 11, 2017 · about 10:10 pm local time
Place
King Vale, California · map
Type
Accident
Injuries
6 people had minor injuries.
Weather
visual conditions (good weather)
Aircraft
Eurocopter AS 350 B3, built 2002 · all AS 350s on the register
Registration
N357PJ · registry record · serial 3608
Damage
Substantial damage
Flight
Aerial observation flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

The pilot of the helicopter reported that, during the landing on the unimproved dirt parking lot, dust started to kick up, and he transitioned to looking through the "chin bubble" for a visual point of reference. When the helicopter was about 5 to 6 ft above the ground, the pilot felt a sudden impact, followed by subsequent impacts from the two additional rotor blades impacting what was later found to be a tree. The helicopter "violently" fell to the ground and rolled onto its left side. The helicopter sustained substantial damage to the fuselage and main rotor system. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Collision with terrain or object (not controlled flight into terrain) during landing
  2. Loss of control in flight during landing defining event
  3. Roll over during landing

The NTSB's findings

  • cause Personnel issues › Psychological › Attention/monitoring › Monitoring environment › Pilot
  • cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Altitude › Not attained/maintained
  • cause Environmental issues › Physical environment › Object/animal/substance › Tree(s) › Effect on operation
  • Environmental issues › Conditions/weather/phenomena › Ceiling/visibility/precip › Obscuration › Effect on personnel

Pilot

  • Certificate: airline transport pilot, flight instructor
  • Ratings: instructor: helicopter; instructor: instrument helicopter; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 3,631 hours in all; 1,248 in this make and model; 106 in the last 90 days; 52 in the last 30 days; 3,599 as pilot in command; 2,654 on instruments
  • Last flight review: March 23, 2017
  • Medical certificate: Class 1 (with waivers/limitations)
  • Seat: frt
  • Injury: minor injuries

The aircraft

  • Airframe total time: 1,936.6 hours
  • Last inspection: 100-hour inspection, April 24, 2017
  • Maximum gross weight: 4,961 lb
  • Seats: 6
  • Landing gear: fixed
  • Engine: Safran (Turbomeca) 2B (turboshaft); 1,901 hours total
  • Fire on the ground

The flight

  • Departed from: Soda Springs CA at 9:50 pm
  • Destination: King Vale CA

Weather at the time

  • Light: daylight
  • Wind: from 180° at 9 knots, gusting 16
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 77°F (25°C), dew point 36°F (2°C)
  • Altimeter: 30.17 inHg
  • Observation at 9:52 pm from KBLU, 13 miles away

Injuries

FatalSeriousMinorNone
Flight crew1
Passengers5

Documents from the investigation the NTSB's docket: the evidence folder behind the report

3 documents, released by the NTSB on August 31, 2017. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.