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HeliOffshore, Honeywell demo HTAWS capability

14th December 2017 - 10:12 GMT | by The Shephard News Team

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HeliOffshore and Honeywell have demonstrated the capabilities of an enhanced Helicopter Terrain Awareness and Warning System (HTAWS), HeliOffshore announced on 11 December.

The organisations recently completed simulator trials of Honeywell’s Enhanced Ground Proximity Warning System (EGPWS) MKXXII HTAWS solution. The collaborative project is aimed at giving pilots earlier collision avoidance alerts through the widespread adoption of upgraded HTAWS in the offshore helicopter sector.

During trials run by Honeywell, pilots from CHC Helicopter and Bristow Group evaluated the modified Honeywell EGPWS MKXXII system in an S-92 simulator at Bristow’s base in Aberdeen.

The trials demonstrated the use of the UK Civil Aviation Authority’s (CAA) CAP 1519 protection envelopes and how they can reduce the risk of controlled flight into terrain/water accidents. Honeywell will use the data generated by the simulator trials to certify the company’s modified EGPWS.

The protection envelopes stated in CAP 1519 have been the result of several years of work led by the UK’S CAA. The work has used Flight Data Monitoring (FDM) data to provide the evidence to establish enhanced envelopes and also identified two new envelopes alerting flight crew to loss of airspeed. The FDM data has been provided by CHC, Bristow and Babcock from more than 200,000 approaches to offshore installations.

The successful demonstration of the system’s new envelopes providing enhanced collision avoidance protection without nuisance alerts will support efforts to make upgraded HTAWS available for a variety of aircraft from 2018.

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