Standard:

• ARP493

Reaffirmed:

• 1991-04-01

Revised:

• 1964-06-20

Revision:

• Historical. Access the latest revision: ARP493A

Issuing:

• A-20ac Crew Station And Interior Lighting Committee

Scope:

This recommended practice is intended to recommend the basic shapes and dimensions for knobs used in aircraft. Two basic types of knobs, the bar shape and the round shape, are described, as well as several widely used variations of these two basic shapes.

History:

Standard	Published	Revision	Status
ARP493A	2002-01-06	Latest	Reaffirmed
ARP493	1964-06-20	Historical	Reaffirmed

AKA:

• SAE ARP 493

Sector:

• Aerospace

Topic:

• Exterior lighting
• Electrical, Electronics and Avionics
• Human Factors
• Interior lighting
• Safety
• Tests and Testing