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SIKORSKY S-92

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S92
Aircraft
Name S-92
Manufacturer SIKORSKY
Wing Rotary
Position Four-blade main rotor
Tail Four-blade tail rotor
WTC Medium
Type code H2T
Engine Turboshaft
Engine count Multi
Position Above cabin
Landing gear Tricycle retractable
Mass group 3


Manufacturered as:

SIKORSKY S-92 Helibus
SIKORSKY CH-148 Cyclone
SIKORSKY Cyclone
SIKORSKY H-92 Superhawk
SIKORSKY Superhawk
SIKORSKY Helibus


SIKORSKY S-92

SIKORSKY S-92 SIKORSKY S-92 3D

Description

Medium-lift two engine, four-blade transport/utility helicopter with 19/22 seats used for various types of operations - offshore oil transport, search and rescue, airline services and others.

Technical Data

Wing span 17.17 m56.332 ft <br />
Length 17.10 m56.102 ft <br />
Height 4.71 m15.453 ft <br />
Powerplant 2 x General Electric CT7-8A turboshaft, 2,740 shp (2,043 kW) each.
Engine model General Electric CT7

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 140 kts MACH IAS kts IAS kts Vapp (IAS) kts
Distance m ROC ft/min ROC ft/min ROC ft/min ROC ft/min MACH ROD ft/min ROD ft/min MCS kts Distance m
MTOW 1200012,000 kg <br />12 tonnes <br /> kg Ceiling FL150 ROD ft/min APC
WTC M Range 490490 nm <br />907,480 m <br />907.48 km <br />2,977,296.59 ft <br /> NM

Accidents & Serious Incidents involving S92

  • S92, West Franklin Wellhead Platform North Sea, 2016 (On 28 December 2016, yaw control was lost during touchdown of a Sikorsky S92A landing on a North Sea offshore platform and it almost fell into the sea. The Investigation found that the loss of control was attributable to the failure of the Tail Rotor Pitch Change Shaft bearing which precipitated damage to the associated control servo. It was also found that despite HUMS monitoring being in place, it had been ineffective in proactively alerting the operator to the earlier stages of progressive bearing deterioration which could have ensured the helicopter was grounded for rectification before the accident occurred.)
  • S92, en-route, east of St John’s Newfoundland Canada, 2009 (On 12 March 2009, a Sikorsky S-92A crew heading offshore from St. John's, Newfoundland declared an emergency and began a return after total loss of main gear box oil pressure but lost control during an attempted ditching. The Investigation found that all oil had been lost after two main gear box securing bolts had sheared. It was noted that ambiguity had contributed to crew misdiagnosis the cause and that the ditching had been mishandled. Sea States beyond the capability of Emergency Flotation Systems and the limited usefulness of personal Supplemental Breathing Systems in cold water were identified as Safety Issues.)
  • S92, northeast of Aberdeen UK, 2018 (On 23 August 2018, a low experience Sikorsky S92 First Officer undergoing line training made a visual transit between two North Sea offshore platforms but completed an approach to the wrong one. The platform radio operator alerted the crew to their error and the helicopter then flew to the correct platform. The Investigation attributed the error primarily to the inadequate performance of both pilots on what should have been a straightforward short visual flight but particularly highlighted the apparent failure of the Training Captain to fully recognise the challenges of the flight involved when training and acting as Pilot Monitoring.)