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SIKORSKY S-76

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S76
Aircraft
Name S-76
Manufacturer SIKORSKY
Body Narrow
Wing Rotary
Position Four-blade main rotor
Tail Four-blade tail rotor
WTC Medium
Type code H2J
Engine Turboshaft
Engine count Multi
Position Above cabin
Landing gear Tricycle retractable
Mass group 2


Manufacturered as:

KEYSTONE S-76
SIKORSKY S-76
SIKORSKY S-76 Spirit
SIKORSKY Spirit
SIKORSKY AUH-76
SIKORSKY Eagle
SIKORSKY H-76 Eagle


SIKORSKY S-76

SIKORSKY S-76 SIKORSKY S-76 3D

Description

The Sikorsky S-76 is an American multi-purpose medium-size commercial helicopter. The S-76 is powered by two turboshafts which combine to drive the main and tail rotors, each with four blades. The S-76 landing gear is retractable.

Technical Data

Wing span 13.41 m43.996 ft
Length 16.0 m52.493 ft
Height 4.414 m14.482 ft
Powerplant 2 x Turboméca Arriel 2S2 turboshafts, over 500 kW each.
Engine model Turboméca Arriel

Performance Data

Take-Off Initial Climb
(to 5000 ft)
Initial Climb
(to FL150)
Initial Climb
(to FL240)
MACH Climb Cruise Initial Descent
(to FL240)
Descent
(to FL100)
Descent (FL100
& below)
Approach
V2 (IAS) kts IAS kts IAS kts IAS kts MACH TAS 155 kts MACH IAS kts IAS kts Vapp (IAS) kts
Distance m ROC 1300 ft/min ROC ft/min ROC ft/min ROC ft/min MACH ROD ft/min ROD ft/min MCS kts Distance m
MTOW 45364,536 kg
4.536 tonnes
kg
Ceiling FL150 ROD ft/min APC
WTC M Range 600600 nm
1,111,200 m
1,111.2 km
3,645,669.294 ft
NM

Accidents & Serious Incidents involving S76

  • P28A / S76, Humberside UK 2009 (On 26 September 2009, a Piper PA28-140 flown by an experienced pilot was about to touch down after a day VMC approach about a mile behind an S76 helicopter which was also categorised as 'Light' for Wake Vortex purposes rolled uncontrollably to the right in the flare and struck the ground inverted seriously injuring the pilot. The Investigation noted existing informal National Regulatory Authority guidance material already suggested that light aircraft pilots might treat 'Light' helicopters as one category higher when on approach and recommended that this advice be more widely promulgated.)
  • S76, Peasmarsh East Sussex UK, 2012 (On 3 May 2012, a Sikorsky S76C operating a passenger flight to a private landing site at night discontinued an initial approach because of lack of visual reference in an unlit environment and began to position for another. The commander became spatially disorientated and despite a number of EGPWS Warnings, continued manoeuvring until ground impact was only narrowly avoided - the minimum recorded height was 2 feet +/- 2 feet. An uneventful diversion followed. The Investigation recommended a review of the regulations that allowed descent below MSA for landing when flying in IMC but not on a published approach procedure.)
  • S76, vicinity Moosonee ON Canada, 2013 (On 31 May 2013 the crew of an S76A helicopter positioning for a HEMS detail took off VFR into a dark night environment and lost control as a low level turn was initiated and did not recover. The helicopter was destroyed and the four occupants killed. The Investigation found that the crew had little relevant experience and were not "operationally ready" to conduct a night VFR take off into an area of total darkness. Significant deficiencies at the Operator and in respect of the effectiveness of its Regulatory oversight were identified as having been a significant context for the accident.)