TD-207 Frederik ✔ Flashcards
Describe the structural illusion and how to compensate for it.
Structural illusions are caused by the effects of heat waves, rain, snow, sleet, or other visual obscurants. A straight line may appear curved when it is viewed through the heat waves of the desert. The curvature of the aircraft windscreen can also cause structural illusion. This illusion is due to the refraction of light rays as they pass through the windscreen. Solution - Experience and knowledge
Describe reversible perspective and how to compensate for it.
At night, an aircraft may appear to be going away when it is, in fact, approaching a second aircraft. This often occurs when an aircraft is flying parallel to another’s course. Therefore, it is difficult to tell the direction of the aircrafts travel. Solution-proper scanning technique and the 3-r’s: red on the right is returning.
Describe the crater illusion and how to compensate for it.
The crater illusion occurs when aircrew members land at night, under NVG conditions, and the IR searchlight is directed too far under the nose of the aircraft. This will cause the illusion of landing with up-sloping terrain in all directions. Solution - Proper use of landing and search light, knowledge of occurrence, and proper scanning
After practicing VMC approaches to Stinson, you transition over to Cairns AAF, and perform a VMC approach. Your IP tells you that your approach at Cairns was much too high and steep, even though it seemed identical to the approaches you made at Stinson. Which visual illusion are you experiencing, and why is this occurring?
Size-distance illusion. The size of the runway is diffenrent at Cairns compared to Stinson.
In a UH-60M, battery life (when batteries are the only source of dc power) is approximately ___ minutes, when all equipment is used. This time can be increased by turning off non- essential equipment, the _____ ____, and _________ _______ ________. NOTE: When only battery power is available, ____ charged batteries will provide ____ minutes of power at night assuming all dc electrical equipment is left on and used, including the _______ _________. The battery life will be increased by turning off unnecessary equipment.
In a UH-60M, battery life (when batteries are the only source of dc power) is approximately 15 minutes, when all equipment is used. This time can be increased by turning off non- essential equipment, the pilot’s MFD, and limiting radio transmissions.
NOTE: When only battery power is available, 80% charged batteries will provide 12 minutes of power at night assuming all dc electrical equipment is left on and used, including the search light. The battery life will be increased by turning off unnecessary equipment.
What is an emission point?
An emission point is an electrical short in the micro-channel plate. It appears as a steady or fluctuating pinpoint of brigth light in the image area, and does not go away when all light is blocked from the objective lens of that monocular.
What is edge glow, what causes it and how do you check for it?
A bright area in the outer portion of the viewing area. To check for this defect, block out all light by cupping your hand over the lens.
Explain shading. Which cosmetic blemish should it not be confused with? Describe the two other items as explained in the note (same page) it should not be confused with?
You will not see a fully circular image. Shading always begins on the edge and moves inward.
Should not be confused with output brightness.
Make sure the shading is not the result of improper tilt, eye-span adjustment, or vertical adjustment. (unsure which note they are refering to)
When must the ARRIVAL DATA section of the PPC be completed?
If arrival condition at destination have increased from departure data in any of the following by the minimum amount:
5 C
1,000 feet PA
500 pounds.
