Introduction
Honeywell's Mark XXI and XXII Helicopter Enhanced Ground Proximity Warning Systems (EGPWS) are the first to receive TSO-C194 approval, setting a standard for Controlled Flight Into Terrain (CFIT) protection in helicopter operations, particularly for oil/gas, VIP transport, and utility operators.

System Overview
The Mark XXI and XXII systems are designed specifically for rotary wing flight operations, providing advanced terrain and obstacle awareness. They offer visual and audio alerts to help pilots avoid collisions with the ground, water, and obstacles, even in poor visibility or challenging weather conditions.

Key Features

• Designed exclusively for helicopters, exceeding FAA HTAWS definitions.
• Internal GPS card reduces costs and is compatible with third-party displays.
• Lightweight and flexible installation options.
• High-resolution terrain imagery enhances situational awareness.
• Suppress features like Low Altitude Mode for low-level VFR conditions.

Performance and Benefits

• Proven solutions with over 1 million helicopter flight hours since 2001.
• Tailored for Helicopter Emergency Medical Services (HEMS) missions.
• Reduces pilot workload and stress levels.
• Comprehensive database covering global terrain and over 120,000 man-made obstacles.
• Regular updates ensure the most current terrain, airport, and obstacle information.

Technical Specifications

• Worldwide terrain database with 11 regions, including airports, heliports, and obstacles.
• Look-ahead algorithms for path projection and climb performance.
• Display interfaces include single, dual, EFIS, WX radar indicator, MFD, and standalone options.
• Suppress options for low altitude mode, audio inhibit, and terrain inhibit.

Classic and Additional Features

• Classic features include excessive descent rate, closure rate, descent after takeoff, and more.
• Additional features include airspeed expansion, envelope modulation, and built-in tests.

Support and Service
Honeywell provides extensive global support with sales offices, field service engineers, distribution centers, and over 800 installation service centers worldwide, ensuring 24/7/365 fleet operation.

Conclusion
Honeywell's Mark XXI and XXII systems offer unparalleled situational awareness and safety for helicopter operations, backed by decades of experience and a comprehensive support network.