19860531019929A

Accident · Destroyed

FAA accident report · Bell UH1M · Wenatchee, WA · May 31, 1986

Date: May 31, 1986 · 07:10 local
Place: Wenatchee, WA
Phase of flight: Pwr On Vertical Ldng/Rtrcrft
Operating rules: Rotorcraft external load (Part 133)
Damage: Destroyed
Aircraft: N4964N
NTSB investigation: NTSBSEA86FA137
Reported as: Bell UH1M
Reported engine: Lycoming T5313B
Fatal injuries: 0
Pilot’s flight hours: 11,250 total6,000 in this make and model0 in the last 90 days

N4964NRegistration cancelled May 31, 1990 · Bell UH-1LS/N 157854 Airframe modelBell UH-1L

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.

The helicopter impacted trees after losing control. Corrosion in the 42 degree gearbox caused metal fatigue.

As the FAA filed it

THE HELICOPTER IMPACTED TREES AFTER LOSING CONTROL. CORROSION IN THE 42 DEGREE GEARBOX CAUSED METAL FATIGUE.

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 SEA86FA137Accident · 1 fatalField investigationFinal reportWenatchee, WAN4964N, a Bell UH-1L, was being operated in logging ops by an experienced, military trained plt who possessed 6000 hrs of flt experience in model. While lifting a sling load gnd crew rptd smoke from the tail rotor area. Plt released sling load & acknowledged…May 31, 1986 · Destroyed