BWS / Night flight & Task

Question 1

If IMC conditions are entered with the search or landing light on ____ may occur

Answer 1

Spatial disorientation

Question 2

During IIMC, NVGs may allow the pilot to ____

Answer 2

See through thin obstrurations

and therefore it may not be beneficial to remove them once in stabile IMC flight

Question 3

NVG consideration

Aborted takeoff

Answer 3

Due to limited field of view, avoid making abrupt changes in aircraft attitude.

nose high limit forward field of view

Question 4

NVG consideration

Go around

Answer 4

• Obs avoid excesive nose high = limited fwd. view
• Scanning techniques
• Treat visual obstacles (eg. shadows ) as physical obstacles.

Question 5

NVG consideration

Altitude selection NVG flight

Answer 5

1. Find highest point within 1000m of each side of the route leg
2. Multiply by 3.28
3. Round up to nearest 50’
4. Add 100’ for vegetation
5. NVG add 80’ for obstacle clearance

Question 6

Preflight - NVG considerations

Answer 6

1. Use white light. Colored light may make oil and hydraulic leaks unvisible
2. Ensure all lighting is operational
3. Crew on flightline should wear appropriate lighting
4. Pay particular attention to the structural components during preflight

Question 7

Plan a VFR flight - NVG considerations

Answer 7

More detailed planning necessary due to visibility restrictions - CP used for day may not work for night

Question 8

What is the procedure when experiencing NVG/ANVIS failure at NOE / contour flight ?

Answer 8

1. A - T - T - A (react to anvis failure)
2. P* will initiate a climb at a rate that will endure obstacle avoidance

Low level and higher altitudes do not require a climb

Question 9

Why can NVG navigation with standard maps be difficult ?

Answer 9

Due to the map colors and symbologies used

Question 10

Terrain flight deceleration - NVG considerations

Answer 10

• Limited field of view = avoid abrupt changes in attitude
• Maintain scanning techniques to ensure obstacle avoidance and tail rotor clearance

Question 11

LZ/PZ/HA selection for nights - consideration

Answer 11

The required area is larger at night compared to day

Question 12

The quality of depth perception at night for a given situation can depend on ____ ?

4 answers - these are some of the factors - not all and the only factors

Answer 12

• Avialiable lighting
• Type and quality of NVG
• Degree of contrast in the FOV
• User experience

Question 13

The aircrew must often rely on ____ cues

Answer 13

Monocular

Question 14

Why are binocular cues to little (no) use for the crew at night ?

Answer 14

Because the cues rely on the eyes viewing objects from different angles - The object need to be close for this to happen.

Flying at night, the distances to the objects are so great that these cues have almost no value to the crew.