A-A-52163 Ladders, Vehicle-BoardingThis CID covers nine different types of portable, metal, step-ladders hereinafter referred to as ladders for use by personnel in boarding vehicles.

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PIN number

A52163-G1

Number of steps

6

Width, inside rails

W1

508 mm (20 in)

Width, outside rails

W2

610 mm (24 in)

Hook centers

H

560 mm (22 in)

Step depth

D

180 mm (7 in)

First step rise (adjustable)

R1

57.2 to 362 mm (2.25 to 14.2 in)

Typical step rise

R2

274 mm (10.8 in)

Vertical rise, total

R3

1370 to 1675 mm (53.9 to 66 in)

Angle with ground

Material

A

51°

Aluminum