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Accidents · NTSB WPR10FA029 · Final report

Agusta A119 accident near Blythe, California, October 23, 2009

On October 23, 2009 at about 3:20 am local time, a Agusta A119 (helicopter), registered N119AH, was substantially damaged in an accident during enroute near Blythe, California. It was flown under charter and air-taxi rules (Part 135). No one was hurt; 5 people were on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The loss of engine power during cruise flight for undetermined reasons.

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

What the record shows

Date
October 23, 2009 · about 3:20 am local time
Place
Blythe, California · map
Type
Accident
Injuries
No one was hurt; 5 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Agusta A119
Registration
N119AH · no longer on the register · serial 14022
Damage
Substantial damage
Flight
Flight · charter and air-taxi rules (Part 135)

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

During the emergency medical service (EMS) flight, while enroute at 4,500 feet mean sea level, the pilot heard a change in the sound of the main rotor system, followed by a vibration in the cyclic. He applied aft cyclic to slow the helicopter and noticed the rotor rpm starting to decay. After he lowered the collective in an attempt to regain rotor rpm everything appeared to stabilize. The pilot then increased the collective to see if he could re-establish cruise power, but the increase in collective resulted in the low rotor aural warning activating. When the pilot lowered the collective, the warning went out, and when he tried to maintain rotor rpm by using the throttle in the manual mode there was no change, which resulted in the warning system activating again. The pilot then lowered the collective, returned the throttle to the normal position and began a descent, touching down in soft dirt and sliding forward before coming to rest upright. The helicopter was substantially damaged as a result of the hard landing, which separated the tail section. During the postaccident examination, the engine was tested in the gas generator and the power turbine modes, as well as the electronic engine control (EEC) and mechanical engine control (MEC) modes. The engine was observed to run normally to all inputs in gas generator, EEC and MEC control modes, with manual override also observed to function normally. During a subsequent engine test a reduction in gas generator speed of 8 percent occurred, with the engine fully recovering power in about 5 seconds. Additional testing could not replicate the power reduction as previously observed, and the reason for the reported loss of engine power could not be definitively determined.

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. Loss of engine power (partial) during enroute defining event
  2. Off-field or emergency landing during emergency descent
  3. Autorotation Hard landing

The NTSB's findings

  • cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
  • Aircraft › Aircraft power plant › Engine fuel and control › Fuel controlling system › Malfunction

Pilot

  • Certificate: airline transport pilot
  • Ratings: single-engine land; instructor: helicopter; instructor: instrument helicopter; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 3,866 hours in all; 278 in this make and model; 99 in the last 90 days; 24 in the last 30 days; 3,747 as pilot in command; 1,414 on instruments
  • Last flight review: July 21, 2009
  • Medical certificate: Class 2 (without waivers/limitations)
  • Seat: rgt
  • Injury: no injuries

The aircraft

  • Airframe total time: 4,122 hours
  • Last inspection: continuous airworthiness programme, October 5, 2009; 22 hours since
  • Maximum gross weight: 5,997 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Pratt & Whitney Canada PT6B-37A (turboshaft); 0 hours total
  • Operator: Tristate Careflight LLC

The flight

  • Departed from: BLH Blythe CA at 2:59 am
  • Destination: 7CA4 Palm Springs CA

Weather at the time

  • Light: night, dark
  • Wind: from 350° at 6 knots
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 70°F (21°C), dew point 27°F (-3°C)
  • Altimeter: 29.84 inHg
  • Observation at 3:52 am from BLH, 15 miles away

Injuries

FatalSeriousMinorNone
Flight crew4
Passengers1

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

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

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.