NVG Considerations Flashcards
Maintain Airspace Surveillance
Using proper scanning techniques will assist in detecting traffic and obstacles, and in avoiding spatial disorientation. Hazards such as wires are difficult to detect.
Perform Hover Power Check
The crew will use proper scanning techniques to avoid excessive drift when hovering at night or using NVG. If excessive drift occurs P* should use DAFCS hover modes.
Perform Ground Taxi
The landing light should be used for unaided ground taxi and the searchlight with installed infrared (IR) band pass light filter when wearing NVG. The use of proper scanning techniques will assist in detecting obstacles that must be avoided.
Perform Hovering Flight
1.Movement over areas of limited contrast, such as tall grass, water or desert tends to cause spatial disorientation. Seek HVR areas that provide adequate contrast and use proper scanning techniques.
- If disorientation occurs, P* will perform any of the following:
a. Apply sufficient PWR and execute an ITO, Task 1170.
b. Arm the appropriate DAFCS HVR Modes.
c. If takeoff is not feasible, trytomaneuver the aircraft forward and down to the ground, to limit thepossibility of touchdown with sideward or rearward movement.
d. The P will take the flight controls and fly utilizing symbology or outside reference. - When performing operations during unaided night flight, ensure the searchlight or landing light (white light) isin the desired position. Use of the white light may impair night vision for several minutes. Therefore, exercise added caution if resuming flight before reaching full dark adaptation.
Perform Hovering Flight Utilizing Symbology
- Movement over areas of limited contrast, such as tall grass, water or desert tends to cause spatial disorientation. Seek HVR areas that provide adequate contrast and use proper scanning techniques.
- If disorientation occurs, P* will perform any of the following:
a. Apply sufficientPWRand execute an ITO,Task1170.
b. Arm the appropriate DAFCS HVR Modes.
c. If takeoff is not feasible, tryto maneuver the aircraft forward and downto the ground, to limit the possibility oftouchdown with sideward or rearward movement.
d. The P will take the flight controls and fly utilizing symbology or outside reference. - When performing operations during unaided night flight, ensure the searchlight or landing light (white light)is in the desired position. Use of the white light may impair night vision for several minutes. Therefore, exercise added caution if resuming flight before reaching full dark adaptation.
Perform VisualMeteorological Conditions Takeoff
1.If sufficient illumination exists to viewobstacles, accomplish the takeoff in the same way as a VMC takeoffduring the day.Visual obstacles, such as shadows, should be treated the same as physical obstacles.
2.If sufficient illumination does not exist, perform an altitude-over-airspeed takeoff by applying takeoff PWRfirst, followed by a slow acceleration to ensure obstacle clearance. The P* may perform the takeoff from a HVR or from the ground.
a. Maintain the takeoff PWR setting until reaching climb airspeed. AdjustPWRas required toestablishthe desired R/C and cyclic to maintain the desired airspeed.The P should alternate attentionbetween cross-check instruments while assisting in obstacle avoidance. The P* and NRCMshould maintain orientationoutside the aircraft and concentrate on obstacle avoidance. The Pshould make all internal checks.
b. Maintain desired ground track.Reduced visual references during the takeoff and throughout the ascent atnight maymake it difficult to maintain the desired ground track. Knowledge of the surface wind direction andvelocity will assist in maintaining the desired ground track. Use of velocity vector and track angle indicator should be used to maintain desired ground track.
c. Use proper scanning techniques to avoid spatial disorientation.
d. When performing operations during unaided night flight, ensure that the searchlight or landing light(white light) is in the desired position. Use of the white light may impair night vision for several MINs. Therefore, exercise added caution if resuming flight before reaching fully dark adaptation.
Perform Visual Meteorological Conditions Flight Maneuvers
1.The P* will focus primarily outside the aircraft and should concentrate on obstacle avoidance and aircraftcontrol. The P will make all internal cockpit checks.
2.For NVG training in the traffic pattern, the recommended MAX airspeed is 100 KCAS and therecommended MAX bank angle is 30 degrees.
3.Use of cues should be considered during times of lowillumination and/or lowvisibility.
Perform Visual Meteorological Conditions Approach
1.Altitude, apparent ground speed and rate of closure are difficult to estimate at night.
a.The rate of descent during the final 100 feet should be slightly less than during the day to avoid abruptattitude changes at lowaltitudes.
b.After establishing the descent during unaided flights, slightly reduce airspeed until apparent groundspeed and rate of closure appear to be increasing. Progressively decrease the rate of decent and forwardspeed until termination of the maneuver.
2.Surrounding terrain or vegetation may decrease contrast and cause degraded depth perception during theapproach. Before descending belowobstacles, determine the need for artificial lighting.
3.Use proper scanning techniques to avoid spatial disorientation.
4.When performing operations during unaided night flight, ensure that the searchlight or landing light (whitelight) is in the desired position. Using the white light may impair night vision for several minutes. Therefore,exercise added caution if resuming flight before reaching full dark adaptation.
Perform Slope Operations
- When conducting slope operations, select reference points to determine slope angles.
- When performing operations during unaided night flight, ensure that the searchlight is in the desired position. Use of the white light may impair night vision; therefore, exercise added caution if resuming flight before reaching full dark adaptation.
Perform a Roll-On Landing
Altitude, apparent ground speed, and rate of closure are difficult to estimate when making an approach to an area of limited contrast (at night.) The P* will determine the need for artificial lighting and avoid abrupt attitude changes at low altitudes.
Respond to Emergencies
Take special precautions to identify the correct switches/levers when performing EPs at night or while wearing NVD.
Perform Flight with Digital Advance Flight Control System-Off
To aid in preventing spatial disorientation, do not make large or abrupt attitude changes.
Perform Tactical Flight Mission Planning
More detailed flight planning is required when the flight is conducted in reduced visibility, at night or in the NVG environment. TC 3-04.4 contains details about night navigation. NVG navigation with standard maps can be difficult because of map colors, symbology and colored markers used during map preparation.
Perform Terrain Flight Navigation
1.Conducting the flight in reduced visibility (or at night) requires more detailed and extensive flight planningand map preparation. TC 3-04.4 contains details on night navigation. NVD navigation with standard mapscan be difficult because of map colors, symbology and colored markers used during map preparation.
2.Use proper scanning techniques to ensure obstacle avoidance.
Perform Terrain Flight
- For NVG training:
a.NOE flight is defined as operating with the wheels up to 25 feet AHO.
b.Contour flight is defined as operating with the wheels between 25 and 80 feet AHO.
c.Low-Level is defined as operating with the wheels between 80 and 200 feet AHO.
2.For training, a safe airspeed is used base on ambient light, flight visibility, terrain, winds, turbulence,obstacles, and crew proficiency.
3.Wires are difficult to detect with the NVG.
4.Use proper scanning techniques to ensure obstacle avoidance.
