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USASOC SLJM MAY21 > DZ Selection Survey > Flashcards

DZ Selection Survey Flashcards

1
Q
  1. What are the eight DZ selection factors?
A

Airdrop airspeeds (a/c dependent), drop altitude, type of load (personnel or equipment), method of delivery (high/low velocities, free drop), obstacles, access, adequate approach and departure routes, size of the drop zone

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2
Q
  1. What is the drop speed of a UH-60?
A

65 to 75 knots (best speed is 70 knots)

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3
Q
  1. What is the drop speed of a CH-47?
A

80 to 110 knots (best speed is 90 knots)

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4
Q
  1. What is the drop speed of C-5/130/141/KC-130 for personnel?
A

130 to 135 knots (best speed is 130 knots)

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5
Q
  1. What is the drop speed of C-5/130/141/KC-130 for door bundles, CDS, and HVY equipment?
A

130 to 150 knots (best speed is 130 knots)

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6
Q
  1. What is the drop speed of a C-27J?
A

125 knots

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7
Q
  1. What does AGL stand for?
A

Above Ground Level

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8
Q
  1. What does MSL stand for?
A

Mean Sea Level

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9
Q
  1. What does FI stand for?
A

Feet Indicated

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10
Q
  1. How do you calculate FI?
A

Obtain altitude of highest point on DZ (MSL) and add desired drop altitude of the A/C (AGL)

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11
Q
  1. How much do you need to add to the drop altitude for non-standard aircraft if the DZ’s elevation is 5,000’ or higher?
A

500 feet

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12
Q
  1. What is the minimum rotary-wing drop altitude at 90 knots?
A

1250 feet

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13
Q
  1. What is the minimum rotary-wing drop altitude for door bundles?
A

300 feet(day), 500 feet(night)

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14
Q
  1. What is the minimum fixed-wing drop altitude for basic airborne training?
A

1250 feet

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15
Q
  1. What is the minimum fixed-wing drop altitude for door bundles?
A

300 feet

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16
Q
  1. What is the minimum drop altitude for a door bundle from a C-130 using a G-14 cargo parachute?
A

300 feet

17
Q
  1. How long is the interval between equipment and paratrooper drops?
A

Three seconds

18
Q
  1. True or false, bundles and personnel can exit the a/c simultaneously?
A

False

19
Q
  1. What are the three types of airdrops?
A

High velocity, low velocity, free drop

20
Q
  1. What is a high velocity airdrop?
A

A drogue chute stabilizes and keeps the load upright, but does not slow rate of descent

21
Q
  1. What is a low velocity airdrop?
A

The parachute slows the rate of descent for a soft landing

22
Q
  1. What is a free drop?
A

No device to stabilize or slow the descent

23
Q
  1. What are the four airdrop release methods?
A

Computed Air Release Point (CARP), Ground Marking Release System (GMRS), Verbally Initiated Release System (VIRS), Wind Stream Vector Count (WSVC)

24
Q
  1. At what height are trees considered an obstacle?
A

35 feet

25
Q
  1. When is water considered an obstacle?
A

4’ deep or more, 40’ wide at widest point and within 1000m from any edge of the DZ

26
Q
  1. When are wires considered an obstacle?
A

Any wires carrying 50+ volts within 1000m from any edge of the DZ.

27
Q
  1. When does the power company need to shut of power for an airborne operation?
A

NLT 15 minutes prior to time on target

28
Q
  1. What are the considerations for drop zone approach/departure routes?
A

No fly zone/adjacent air operations, Obstacles, Terrain, Enemy situation/location (NOTE)

29
Q
  1. What is the minimum ground space required for personnel jumping from a fixed-wing a/c utilizing a CARP release?
A

549m x 549m (600x600 yards) for one jumper from 1000’ AGL

30
Q
  1. What is the minimum ground space required for personnel jumping from a fixed-wing a/c utilizing GMRS or VIRS release?
A

275m x 275m (300x300 yards)

31
Q
  1. Whose responsibility is it to determine DZ size requirements?
A

Commander of the Air Lift Forces (COMALF) and the Army Battle Command (ABC)

32
Q
  1. What is the form for a DZ survey?
A

AF 3823

33
Q
  1. What are the two types of DZ surveys?
A

Existing and Tactical

34
Q
  1. How long is a DZ survey good for?
A

5 years from MAJCOM signature

35
Q
  1. How long is a Tactical DZ survey good for?
A

Single use

36
Q
  1. Who is responsible for aircraft safety of flight under a tactical DZ survey?
A

Airlift unit

USASOC SLJM MAY21 (11 decks)

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