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2014-07-01
BELL 412EPI HELICOPTER
The Bell 412EP is the workhorse of the helicopter industry with a reputation of getting up and going to work every day in even the most extreme environments.
The Bell 412EPI is a Bell Helicopter/AA upgrade to the basic Bell 412EP helicopter, providing an electronically controlled PT6T-9 engine and Bell BasiX-ProTM integrated glass cockpit display system. The Bell 412EPI is certified as a supplemental type certificate (STC) that can be applied to new or existing Bell 412EP helicopters.
In the new Bell 412EPI, the reliability and versatility of the Bell 412 evolves to the next level. Its Bell BasiX Pro Integrated Avionic System provides critical flight information at a glance for greater situation awareness and safety. The Pratt & Whitney PT6T-9 Twin Pac engines provide enhanced hot-high performance and increased Category A/ JAR OPS PC1 Performance.
In 2013, Abu Dhabi placed the world’s first-ever order for the Bell 412EPI helicopter intended for offshore oilfield use. Bell Helicopter, the US-based manufacturer owned by Textron is expecting “several” more orders in the region, it says.
The helicopter is an upgrade to the 412EP. It can accommodate 13 passengers, and built with a rugged airframe for use in life and rescue operations. The main competitor would be the Q400 NextGen by Bombardier, which was also purchased by Abu Dhabi Aviation.
Bell currently has some 2,000 helicopters in use in the Middle East. It expects that number to grow to 3,000 within the next 15 years as it looks to open an office in the UAE early next year to cater to the rest of the region.
Bell has a 30 per cent market share of the Middle East’s helicopter market. The biggest market for its aircraft is the offshore oil and gas sector, but the company is also seeing an increasing demand for emergency medical services, particularly after the disaster caused by typhoon Haiyan in the Philippines.
Globally, sales of helicopters for commercial use grow at a rate similar to GDP but the Middle East sales are exceeding that, says a the Bell executive.
Bell Helicopters’ commercial sales from 2011 to 2012 grew 50 per cent, although that has slowed over the past year due to ongoing conflicts in the region.
To ramp up sales, the company is looking to adapt its future helicopters more to the needs of the region, which suffers from harsher environments.
Currently, the UAE has seen the most growth in the region, but Iraq is also a keen purchaser of Bell’s helicopters as it continues to develop its oil and gas capabilities.
RENOWNED IN-SERVICE SUPPORT
The 412EPI is certified for single pilot IFR with three-axis or optional four-axis stability and control augmentation and a coupled flight director.
In addition to offering outstanding product features, the 412EPI is backed by Bell Helicopter’s renowned in-service support, voted number one by its customers 19 years running.
A modern, advanced cockpit proven successful in the Bell 429, the Bell 412EPI provides workload relief in the most demanding helicopter IFR environment.The Bell BasiX-Pro Avionics System has been specifically designed to meet the requirements of twin engine helicopters and is optimized for IFR, Category A, and JAROPS-3 compliant operations.
The system is highly flexible and configurable to meet various operating and customization needs. The system takes advantage of the latest in display, computer processing, and digital data bus technology to provide a high degree of redundancy, reliability, and flexibility.
All engine indication and crew alerting system (EICAS) display functions are provided through the Bell BasiX-Pro avionics system. The system works in conjunction with the engine control units for the Pratt & Whitney electronically-controlled PT6T-9 Twin Pac engines.
Other aircraft systems indications, warnings, cautions, aural alerts, and automated performance features are provided through the remotely located aircraft data interface unit.
COMMUNICATIONS, NAVIGATION
The 412EPI STC replaces COM1, NAV1, and the transponder from the original Bell 412EP with a helicopter-approved Garmin GTN-750 NAV/COM/WAAS GPS and a GTX-33EH ES remote transponder.
The GTN-750 provides a high-resolution touch-screen display with extensive digital mapping capability, terrain resentation, electronic charts and approach plates.
Both the GTN-750 or GNS-530AW configurations support LPV (localizer precision with vertical guidance) coupled approaches through the BasiX-ProTM system.
The Basix-Pro includes built-in provisions to allow customized configuration of the following equipment: Alternate FMS / GPS systems, Alternate ARINC-429 radio navaids, second radar altimeter UHF/VHF direction finder or second ADF, weather/ search radar FLIR / EVS display (either NTSC or PAL standard), designator control panel (allows FLIR or radar cursor designated positions to be captured as waypoints), General color video display or digital map display, velocity sensor (for hover cues and/or search and rescue approach options) and programmable CAS messages (cautions/ warnings/advisories.
AUTOMATIC FLIGHT CONTROL SYSTEM
The 412EPI STC works with the existing Honeywell SPZ-7600 digital automatic flight control system (AFCS) providing three-axis or four-axis flight director capability. The Bell 412EPI STC readily allows upgrade to four-axis which provides the additional features of yaw trim, altitude pre-select, simultaneous vertical and speed coupling, automatically decelerating approaches, radar altitude hover hold, and hover velocity assist.
Bell Helicopter is at the forefront in providing multiple ways of satisfying evolving requirements in helicopter traffic management, flight following and terrain awareness safety. The Bell 412EPI provides fully-coupled LPV WAAS localizer precision with vertical guidance wide area augmentation system approaches allowing precision instrument flight operation into more airports and heliports.
The Bell 412EPI incorpor
ates a cockpit switch to control application of external power so that aircraft systems are not powered unnecessarily when no flight crew is aboard.
ates a cockpit switch to control application of external power so that aircraft systems are not powered unnecessarily when no flight crew is aboard.
When external power is applied but switched off via the cockpit control, a ‘courtesy lighting’ feature is provided. This feature provides power to the baggage compartment lights, passenger step/ external utility lights, cabin dome lights, and cockpit secondary instrument lights. This feature facilitates pre-fligh/postflight loading and unloading.
MINIMUM BELL 412EP CONFIGURATION
The Bell 412EPI STC can be applied to a Bell 412EP baseline aircraft that meets the following requirements:
Bell 412EP aircraft serial number 36248 or subsequent. Serial numbers 36248 to 36490 will require application of the Bell Helicopter AHRS upgrade kit. Application to serial numbers prior to 36248 will require additional upgrades.
Bell Helicopter has partnered with BLR Aerospace to provide its performance, safety and efficiency-enhancing FastFin system as a standard feature on new Bell 412EP aircraft orders. The system incorporates two parallel stall strips along the tail boom and a reshaped vertical fin.
These modifications combine to optimize airflow around the tail boom, improving the handling, stability and lifting capacity of the Bell 412EP in all environments, especially high and hot conditions. The Bell 412EPI STC can be configured on aircraft both with or without the BLR Strake and FastFin.
The FastFin system is a combination of two separate modifications, one to the vertical fin and the other to the tailboom. For clarity, the term FastFin refers to the BLR modification that changes the shape and contour of the vertical fin. The term FastFin System refers to the combined FastFin and dual tail boom strake installation.
The performance benefits of this system include increased tail rotor effectiveness and higher crosswind speed tolerance at hover in certain conditions.
In conditions where the aircraft is currently tail rotor limited the FastFin System results in increased weight-altitude-temperature capability for takeoff, landing and in-ground-effect maneuvers, providing substantial improvement in useful load for hot/high operation.
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