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MYTH 1: Enhanced vision systems have only one application.


Many aircraft owners or operators believe that enhanced vision systems (EVS) only apply to operations during periods of darkness. However, EVS provide increased situational awareness during       application, EMS, SAR, ALE, and ISR    occur during periods of reduced visibility that are associated with obscurations such as fog, smoke, haze, dust, snow, precipitation, or low levels of illumination. All of these can be contributing factors when it comes to possible IIMC or CFIT incidents. EVS help in mitigating these factors by allowing pilots to see clearly.


MYTH 2: We don’t need EVS; we’ve got night vision goggles.


I hear this a lot; it’s just not true. EVS complement NVG operations by allowing pilots to see weather and obscurations before they become a hazard. Unfortunately, NVGs can lull pilots into a false sense of security by allowing them to think that they can “go where no one     some light obscurations without the pilot being aware of these conditions and this can quickly lead into an IIMC or possible CFIT-related event. EVS complement NVG operations during periods of low illumination or high levels of ambient light, while NVGs complement EVS during periods of thermal crossover. Simultaneous operation of EVS and NVGs bring the best of both worlds together. It’s simply a no-brainer!


MYTH 3: EVS are expensive and provides no return on investment.


Based upon new technology, EVS cost substantially less. EVS can now be sourced for experimental aircraft (where cost is often prohibitive) to the most


46 August 2015


expensive corporate and commercial  as a recommended option. Aftermarket installations are also available for most        retention, and aid in contract award and retention, all while possibly qualifying for insurance rebates. Since 2009, EVS have  enhancements available.


MYTH 4: We’ve got a Turret imaging system; we don’t need EVS.


Turreted systems are great, no doubt, but what tools does the pilot have? Normally, either the pilot or crew member not         enhanced vision system for the pilot  awareness. Turret operations are improved since crew member situational and spatial orientations are enhanced. Possible CFIT-related incidents due to turret orientation are mitigated.


MYTHS 5: We don’t need EVS, we’ve got a synthetic vision system (SVS)


Synthetic vision is a great leap in technology. It depicts a three- dimensional pictorial view of the surrounding terrain with aircraft attitude, heading, obstacle alerts, and terrain advisories. The question is: How current is your database? How accurate is your navigation system? Are all of the known obstacles and hazards depicted in your SVS database? EVS become the force multiplier, once again complementing a SVS. What you see is what you get. Known and unknown hazards are easily observed; and SVS position      Situational awareness and productivity are increased—and pilot workloads are reduced.


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