May 27th 2018, OAS’ Airbus 355 helicopter became the first helicopter to operate to ExxonMobil Wiskey Star production platform in Nigeria
AIRCRAFT TECHNICAL DESCRIPTION
Brief description
The Airbus (Eurocopter) AS-355N is a light size, 6-place, twin turbine powered helicopter incorporating a three bladed main rotor. The standard AS-355 incorporates all of the redundant systems necessary for offshore certification. The interior configuration a two section cabin and carries 6 persons comfortably. In the two-man crew compartment, the pilot occupies the right seat, and co-pilot, the left. Sound proofed headliners and upholstered seats add to the comfort of the helicopter.
Power plant
TURBOMECA Ariel engines with 30 minutes OEI (two ARRIUS 1A Engines) Continuous power Power Output 958 s.h.p (max take off)
Temperature for max payload
+ 40ºC
Seating capacity
Layout
5 passengers & 1 crew
Fuel Consumption
225 ltrs/hr (approx)
Range
392 nm @ 130kts
Max Speed
150 kts
Performance
Category A
SAFETY MODIFICATIONS
| SAFETY MODIFICATIONS | SAFETY MODIFICATIONSS |
|---|---|
| Engine | ENGINE FIRE EXTINGUISHER |
| NAVAIDS | YES |
| Type of heliraft | EMERGENCY FLOATATION LANDING GEAR |
| ELTs | YES |
| Type of HUMS system | – |
| Upper Torso Restraint | YES |
| Use of fire blocking materials in cabin/cockpit finishing | YES |
| Automatic inflation of floatation equipment | YES |
General equipment installed on AS-355N
| General equipment installed on AS-355N | General equipment installed on AS-355N- |
|---|---|
| Dual Controls | YES |
| Engine Protection | ENGINE WASHING DEVICE |
| Additional Avionics | AS REQUIRED FOR DUAL PILOT |
| Standby Instruments | AS REQUIRED |
| Electrical system | 2 x 28V DC GENERATORS + INVERTERS FOR 115V AC |
| Hydraulics | DUAL SYSTEM WITH REDUNDANCY |
| Range fuel tanks | QTY: 730 liters |
| Pressure refueling | NO |
| Undercarriage | SKID TYPE (HIGH) |
Equipment Installed on Eurocopter AS-355 Helicopters
| Equipment | Installed on Eurocopter AS-355 Helicopters |
|---|---|
| Area Navigation System | YES |
| GPS | GARMIN GPS-530 w/West African Database/ Nav switching (Vert Nav not coupled) |
| Radio Altimeter | KRA 405 Bendix King. Indicator: KNI 416 Bendix King. Encoding Altimeter: KE 127 Bendix King. |
| VOR/ILS/DME | KN-63 Bendix King. Indicator: KDI-572 Bendix King |
| ICS | 2 lines. TB27 Team |
| Transponder & Encoding altimeter | ENCODING ALTIMETER INDICATOR /Millibars |
| Radio altimeter (single/dual) | SINGLE |
| VHF/FM Radios | Nat. KY-196A King King |
| VHF/FM Marine Radio | AS REQUIRED |
| Pilot Intercom System | YES |
| Passenger Public Address System clearly audible at all passenger seat locations | HEADS-UP TECHNOLGIES |
| Crew Headset Type | DAVID CLARK |
| ELT (standard) | ELT Kannad 406 AF-H |
| Airborne Collision Avoidance System (TCAS) | Garmin GNS-530W incorpotated |
| Beacon – Underwater Locator Transmitter | YES |
Cabin configuration and Safety Equipment
Configuration
Number of passenger configuration
UTR and New seats (Stressed to the correct ‘g’ spec.) with fire block protection
6 persons
YES
Passenger Cabin Egress Modification
| Passenger Cabin Egress Modification | – |
|---|---|
| – | |
| Push-out windows | YES |
| Rear Door support Step | YES |
| Rear seat orientation bar | NO |
| Single action Mechanism for Door Jettison | NO |
| Sliding rear (left and right) | YES |
| Life raft Position External (min 1 external) | EMERGENCY FLOAT/RAFT SYSTEM (Includes Water activated Switches) |
| Number of lifejackets (plus one (1) spare to be carried in the aircraft). | 6 + 1 |
Lifejacket features
| Lifejacket features | – |
|---|---|
| Crotch strap | YES |
| Automatically activating strobe light | YES |
| Grab handle at rear of neck | YES |
| Twin girth adjusters | YES |
| Two-meter buddy line, with fast action clip, contained in pouch on right-hand side of jacket | YES |
| Metal buckles | YES |
| Deployable Auxiliary Flotation Gear | YES |
| Rotor Brake | YES |
| Ear Plugs | YES |
| HISL (High Intensity Strobe Lights) | YES |
AS-355N PERFORMANCE DATA PAGES
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