BWS / Night checkride

Question 1

What are the techniques of movement ?

Answer 1

Traveling (Enemy unlikely)
Traveling overwatch (Enemy possible)
Bounding over-watch (Enemy expected)

Question 2

When can landing light be used during tactical operations ?

Answer 2

When the use of it prevents a hazardous situation

Question 3

What should you be aware of in regard to supplemental cockpit lighting ?

Answer 3

That they must be compatible with NVGs and adhere to directives

Question 4

Must NVD IR light be installed for night flights ?

Answer 4

Yes

If experiencing failure in flight it must be determined what effects it has on the mission

Question 5

Ceiling and visibility requirements for night flights?

Answer 5

Takeoff 1000’ ceiling 3 SM vis
Recovery 700’ ceiling 1 SM vis

Question 6

When does the counterweight break off

Answer 6

10-15 G

Question 7

Explain

NVG operational considerations: Color discrimination

Answer 7

NVGs eleminates colors - gives a monochromatic picture

Question 8

Explain

NVG operational considerations: Scanning techniques

Answer 8

Basic principles are the same as unaided flight.
But due to the 40 degree FOV, continal scanning is necessary to compensate.

be aware of SD - scan slowly and intentionally

Question 9

Explain

NVG operational considerations: Obstruction detection

Answer 9

Obstructions have poor reflective surfaces - be aware

Question 10

Explain

NVG operational considerations: Spatial Disorientation

Answer 10

Aviators should avoid making drastic changes in attitude / bank / speed and head movements

Question 11

Explain

NVG operational considerations: Airpseed and ground limitations

Answer 11

Don’t overfly your capability (reaction time) - obstacles avoidance

Reduce speed

Question 12

Is red cockpit lighting authorized with NVGs

Answer 12

No - it’s not compatable

Question 13

What’s the Mnemonic for “NVG operational consideration - Distance estimation and depth perception”

Answer 13

DATE
Degree of contrast - Available lighting - Type/quality of NVG - Experience

Question 14

What’s the Mnemonic for “NVG operational consideration - Lights”

Answer 14

BEAP
BSP - Effect of bright lights (halo) - ABC - Performance relations (identification of objects at distance)

Question 15

Illusions

When can “Height, depth perception” occur ?

Answer 15

Over areas w/o visual references

Misjudge a/c altitude

Question 16

illusions

When can “Size-distance illusions” occur

Answer 16

When size of a known object is used to judge distance (and the size isn’t as it normally is)

Question 17

Illusions

When can “size constancy” occur ?

Answer 17

landing at unfamiliar runway (eg. wider runway than usual will make you think you are lower than you actually are)

Question 18

Illusions

When can “shape constancy” occur ?

Answer 18

Sloping runways

Downsloping runway can create illusion that the a/c is lower than it actually is

Question 19

At what PA does adverse effects on night vision start ?

Answer 19

4.000’ PA

Question 20

What effect does lack of oxygen have on night vision ?

Answer 20

Decreases rod sensitivity = Increase dark adaptation time and decreases general night vision

Question 21

Which colors falls natually on the retinal wall and allows the eye to focus better ?

Bonus effects ?

Answer 21

Blue/green

Decreases glare and IR signature

Question 22

What is the forvea centralis responsible for ?

Answer 22

Sharp central vision - important for visual detail

Question 23

Where is the day blind and night blind spot in relation to the forvea ?

Answer 23

Night: The forvea is the night blind spot
Day: 15 degrees of forvea (optic disc)

Question 24

During an autoration - how do you obtain minimum rate of descent or maximum glide distance ?

Answer 24

Minimum rate of descent : 60 KIAS
Maximum glide: 90 KIAS

Question 25

What is EENT and what does it stand for ?

Answer 25

End evening nautical twillight
When the ambient solar light ( after/beofre sunset/sunrise ) becomes unusable

48 min after sunset

Question 26

What considerations differ when planning terrain flight route for night operations ?

Answer 26

• Use 1000m each side of route - highest elevation - for altitude calculations
• For altitude calculations add 80’ for obstacle avoidance
• Selecting ACPs / route : avoid bright lit areas, low contrast, shadows, flying into setting moon ect.

Question 27

At night, course changes should not exceed ____ degrees

Answer 27

60 degrees

Question 28

The ANVIS before operation checks

Answer 28

• Check serial number
• Inventory
• DA form 2408-30 ( 6 month service + look if it’s ground - red X)

Question 29

NVG considerations for IIMC

Answer 29

• NVGs may allow you to see through obscruration
• IMC with landing light on may cause SD
• NVGs may be removed once in stabile climb

Question 30

When experiencing NVG failure at NOE or contour the P* will ?

Answer 30

Initiate a climb that ensures obstacle avoidance

Question 31

Which is the most important depth perception cue and explain it

Answer 31

Motion parallax
Apparent relative motion of stationary object as viewed by an observer moving across the landscape

Question 32

What are the army VFR WX minimums for
- Class G - below 1200’ - night
- Class C, D & E - below 10.000 - night

Answer 32

Class G: 1 SM / COC
Class C,D,E: 3 SM / BCC

Question 33

Unaided nightflight is not autorised below what altitude?

Answer 33

200’ AHO (except takeoff and landing)

Question 34

NVG considerations for autorotation

Answer 34

• Attitude control is critical
• Use searchlight
• Steady state before 300’ AGL

Question 35

What’s a steady state autorotation

Answer 35

• a/c in trim
• Appropriate airspeed
• NRO w/i limits
• Position to terminate

Question 36

When is a flight considered a terrain flight ?

Answer 36

When flying below 200’ AHO