19830820074729A

Accident · Destroyed

FAA accident report · Boeing 1072 · Shaver Lake, CA · August 20, 1983

Date: August 20, 1983 · 10:05 local
Place: Shaver Lake, CA
Phase of flight: Hovering
Operating rules: Rotorcraft external load (Part 133)
Damage: Destroyed
Aircraft: N190CH
NTSB investigation: NTSBLAX83FA395
Reported as: Boeing 1072
Reported engine: GE CT581401
Fatal injuries: 0
Pilot’s flight hours: 2,422 in this make and model272 in the last 90 days

N190CHRegistered now · Boeing-Vertol 107-IIS/N 2002 · Built 1962 Airframe modelBoeing-Vertol 107-II Engine modelGE CT58-140-2Turbo-shaft

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

#3SYN chronizing shaft failed on lifting a external load. Caused main rotors to collide. Rivet hole fatigue cracks.

As the FAA filed it

#3SYN CHRONIZING SHAFT FAILED ON LIFTING A EXTERNAL LOAD. CAUSED MAIN ROTORS TO COLLIDE. RIVET HOLE FATIGUE CRACKS.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB LAX83FA395Accident · 2 fatalField investigationFinal reportShaver Lake, CAThe only witness, the hooker, who gets logs ready for transport by the helicopter, stated that he heard noises and the rotor blades began coming apart as the acft started downhill with a log. Examination of the wreckage revealed that #3 sychronizing shaft…Aug 20, 1983 · Destroyed

Other reports on N190CH · 1

Matched to the same aircraft by N-number and date.

Incident 20120809020429IChester, CAAccording to the pilot and copilot statements, during a dip for water there was some miscommunication between the crew that allowed the aircraft to get to close to a tree and the forward rotor blades contacted a tree. After returning to the airport,…Aug 9, 2012 · Minor damage