20060317008649A

Accident · Substantial damage

FAA accident report · Kaman K-1200 · Dayville, OR · March 17, 2006

Date: March 17, 2006 · 09:35 local
Place: Dayville, OR
Phase of flight: Low Level Operations
Operating rules: Rotorcraft external load (Part 133)
Operator: GZ9L
Damage: Substantial damage
Aircraft: N263KA
NTSB investigation: NTSBSEA06FA067
Reported as: Kaman K1200
Reported engine: Lycoming T5317A
People aboard: 1
Fatal injuries: 1
Pilot’s flight hours: 4,018 total1,200 in this make and model100 in the last 90 days

N263KARegistration cancelled Dec 11, 2006 · Kaman Aerospace K-1200S/N A940033 · Built 2002 Airframe modelKaman Aerospace K-1200 Engine modelHoneywell T5317 seriesTurbo-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.

(-23) During logging operations the pilot dropped the load and notified ground crew that he needed to go to service and would be right back. Witnesses stated as the helicopter flew away it sounded like it lost power. The pilot radioed that he was in trouble and said to say good-bye. The helicopter rolled left and impacted the ground in an inverted position coming to rest on its left side. Wreckage was contained in a small area. There was no post crash fire. 80 gallons of fuel was verified remaining. Tear down revealed severe damage to the reduction gear box.

As the FAA filed it

(-23) DURING LOGGING OPERATIONS THE PILOT DROPPED THE LOAD AND NOTIFIED GROUND CREW THAT HE NEEDED TO GO TO SERVICE AND WOULD BE RIGHT BACK. WITNESSES STATED AS THE HELICOPTER FLEW AWAY IT SOUNDED LIKE IT LOST POWER. THE PILOT RADIOED THAT HE WAS IN TROUBLE AND SAID TO SAY GOOD-BYE. THE HELICOPTER ROLLED LEFT AND IMPACTED THE GROUND IN AN INVERTED POSITION COMING TO REST ON ITS LEFT SIDE. WRECKAGE WAS CONTAINED IN A SMALL AREA. THERE WAS NO POST CRASH FIRE. 80 GALLONS OF FUEL WAS VERIFIED REMAINING. TEAR DOWN REVEALED SEVERE DAMAGE TO THE REDUCTION GEAR BOX.

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 SEA06FA067Accident · 1 fatalField investigationFinal reportDayville, ORThe improper overhaul of the reduction gear box assembly and improper installation of the N1 seal and nut assembly lockcup by maintenance personnel, which resulted in failure of the reduction gear box and a total loss of engine power. A contributing factor…Mar 17, 2006 · Substantial damage