FTW86LPJ06

NTSB accident investigation · Aerospatiale SA319B · Tulsa, OK · January 7, 1986

Accident · No injuriesFinal report
Date
January 7, 1986, 09:30 local (15:30 UTC)
Place
Tulsa, OK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N67102Aerospatiale SA319B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860107006069A
Case key
22108

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Rotor system,main rotor hub lead-lag stop/damper - failure,partialCause
Rotor system,main rotor blade - vibrationCause
Forced landingDescent - emergency
Autorotation - performedPilot in command

Analysis

The main rotor blades struck the tail boom after liftoff and vibration was violent. When the plt heard metal contact he pulled off the throttle and made an autorotation landing from about 4 ft AGL.

Aircraft

Registration
N67102
Reported as
Aerospatiale SA319B
Category
Helicopter
Serial number
2187
Airframe hours
6,128
Engine
Turbomeca ASTAZOU XIVB, 858 lbs thrust, turbo shaft
Damage
Substantial damage
Flight
Part 135
Operator
Rocky Mountain Helicopters, doing business as [Ems]
Airworthiness certificate
Standard, Normal
Destination
Mcalester, OK
Airport
Hillcrest Medical Center

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
40
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
11,300 total · 200 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
315° at 8 knots, gusting 12

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.