NYC86LA100

NTSB accident investigation · Aerospatiale SA316B · Pittsburgh, PA · April 5, 1986

Accident · No injuriesLimited investigationFinal report
Date
April 5, 1986, 16:55 local (20:55 UTC)
Place
Pittsburgh, PA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2354Aerospatiale SA316B
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 1988
Report
Approved by Office Director
FAA report
19860405009779A
Case key
30318

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

On this page

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.

Loss of engine power(total) - mech failure/malfTakeoff
Reduction gear assy,reduction gear - failure,totalCause
Maintenance - not identifiedCompany maintenance personnel
Forced landingDescent - emergency
Autorotation - performedPilot in command
Hard landingLanding - flare/touchdown

Analysis

The pilot-in-command lifted off the helipad vertically to an altitude of 30 feet at which time he experienced a power loss. He backed up the helicopter 20 feet and allowed it to yaw to the right as it descended to the helipad. He landed on the helipad hard with low rotor RPM. Inspection of the engine revealed the gear and spline assembly in the reduction gearbox had stripped thereby disconnecting the gearbox from the turbine section.

Aircraft

Registration
N2354
Reported as
Aerospatiale SA316B
Category
Helicopter
Serial number
1587
Airframe hours
9,206
Engine
Turbomeca ARTOUSTE IIIB, 542 horsepower, turbo shaft
Damage
Substantial damage
Flight
Part 91
Operator
Allegheny General Hospital, doing business as [Ems]
Registered owner
Rocky Mountain Helicopter
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 3, 1986
Destination
Clearfield, PA
Flight plan
VFR
Airport
Allegheny Gen'L Hospital

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
50
Certificate
Commercial
Airplane ratings
Multi-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
5,376 total · 381 in this make and model · 88 in the last 90 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 9 knots
Visibility
4 statute miles
Lowest ceiling
4,500 ft overcast
Temperature
64 °F, dew point 57 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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