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Products > H175 (formerly known as EC175) Overview

H175 (formerly known as EC175) Overview

The multi-role H175 (formerly known as EC175) is a medium-class, twin-engine helicopter with performance, range and capacity that make it perfectly suited to a range of missions, including offshore crew transfer flights, search & rescue operations, homeland security roles, and emergency medical flights.

When configured for offshore oil and gas operations, the H175 offers a baseline payload/radius-of-action performance of 16 passengers carried out to a distance of 165 nm and back. For longer-range missions, the H175 can transport 12 passengers on a 220-nautical mile radius-of-action, and an 18-passenger configuration also is under development, with a radius-of-action of 130 nautical miles. The H175’s advanced design enables it to achieve ranges comparable with larger, less-fuel efficient designs, protecting both the environment and the operator’s bottom line.

The H175’s 424-cu. ft. cabin is the largest in its class, with an ergonomic seating layout ensuring unrivalled legroom and seat pitch for all passengers. Passenger comfort is further assured thanks to the use of dedicated environment control systems for the cabin and cockpit. Extra-large sliding doors on both sides of the aircraft provide unobstructed access to the flat-floored cabin, with large windows providing both panoramic views and ease of emergency egress.

In addition to oversized Type IV emergency exits and energy-attenuating seats, the H175 also features large-capacity front and aft emergency floatation devices, which are permanently armed in flight and can be inflated at high speeds. The H175 has Sea State 6 capability with a high helicopter waterline.
Two large upward-opening hatches allow unfettered loading and unloading of the spacious 82-cu. ft. luggage compartment, which can also be directly accessed from the cabin when configured for search & rescue operations.

Powered by two 2,000 shp class Pratt & Whitney Canada PT6C-67E engines equipped with new-generation Full Authority Digital Engine Controls (FADEC), the H175 combines performance, reliability and fuel efficiency. The aircraft’s under-floor fuel system offers best-in-class capacity for long-range and endurance, and meets the latest safety standards. Pressure refueling further increases the H175’s fuel capacity to 691 gal.

The aircraft’s five-blade Spheriflex main rotor is derived from Airbus Helicopters’ acclaimed H225, with new-generation blade profiles and tips making the low-vibration H175 a quiet experience for passengers and neighbors alike.

The H175’s new main gearbox is capable of a 30-minute flight after total loss of oil, and is fitted with two accessory gearboxes for redundancy. A de-clutch capability provides the benefits of an auxiliary power unit without the cost and weight penalties of an APU.

State-of-the-art technologies designed into the H175 include a glass cockpit and four-axis digital Automatic Flight Control System. The four 6 x 8-inch multi-function LCD displays, plus one optional central mission display, provides a pilot-friendly environment and reduced crew workload. The open architecture design of the H175’s dual-pilot IFR avionics facilitates the use of mission specific equipment, while protecting against future obsolescence.

Utilizing a rugged aluminum alloy airframe, the H175 integrates an MSG-3 optimized maintenance philosophy for ease of support. On-board maintainability and reliability enhancement features include a comprehensive health and usage monitoring system (HUMS) with an on-ground maintenance reporting capability to facilitate troubleshooting. H175 operators will also benefit from 3D electronic technical publications, full-flight simulators, and a continuous maintenance review board process incorporating input from operators.


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