20031120030629A

Accident · Substantial damage

FAA accident report · Kaman K-600 · Coolin, ID · November 20, 2003

Date: November 20, 2003 · 16:00 local
Place: Coolin, ID
Phase of flight: Hovering
Operating rules: Rotorcraft external load (Part 133)
Operator: J14L
Damage: Substantial damage
Aircraft: N286M
NTSB investigation: NTSBSEA04LA019
Reported as: Kaman K600
Reported engine: Lycoming T5313B
People aboard: 1
Fatal injuries: 1

N286MRegistered now · Kaman K-600S/N 110 Airframe modelKaman K-600

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.

(-23) Helicopter was lifting logs from a hillside when the right rotor shaft (mast) failed just below the rotor head. Both main rotors disintegrated during the separation sequence and the helicopter descended out of control into a nose down inverted crash from about 200 feet AGL.

As the FAA filed it

(-23) HELICOPTER WAS LIFTING LOGS FROM A HILLSIDE WHEN THE RIGHT ROTOR SHAFT (MAST) FAILED JUST BELOW THE ROTOR HEAD. BOTH MAIN ROTORS DISINTEGRATED DURING THE SEPARATION SEQUENCE AND THE HELICOPTER DESCENDED OUT OF CONTROL INTO A NOSE DOWN INVERTED CRASH FROM ABOUT 200 FEET AGL.

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 SEA04LA019Accident · 1 fatalLimited investigationFinal reportNordman, IDThe total failure of the helicopter's right main rotor shaft while in an ascending hover due to the propagation of a fatigue crack that initiated in a corrosion pit on the surface of a slot in the wall of the subject shaft. Factors include accumulation of…Nov 20, 2003 · Substantial damage