Bendix 42E00-6-C Aviation Corporation Rotary Pneumatic

Description

Bendix Aviation Corporation Rotary Pneumatic De-Icer Timer Model: 42E00-6-C

Description:

This 42E00-6-C is a vintage electro-pneumatic rotary timer manufactured by Bendix , is used, and UNTESTED. These devices were primarily used in aircraft pneumatic de-icing systems (commonly associated with B.F. Goodrich de-icer boots).

Its primary function is to automatically control the sequential inflation and deflation cycles of rubber de-icer boots on leading-edge airfoils (wings, horizontal stabilizers, and vertical stabilizers) to shed ice accumulation during flight.

How It Works

Rotary Switching Mechanism: The timer utilizes a small motor-driven rotary distributor mechanism to actuate electrical contacts or air distributor valves in a precise sequence.

Cycle Timing: It directs air pressure (supplied from engine bleed air or a dedicated air pump) to inflate specific sections of the de-icer boots in sequence, followed by venting or applying vacuum to deflate them completely.

Pneumatic Boot Operation: Rapid inflation cracks accumulated ice off the wing surfaces, while the complete deflation period prevents new ice from forming over an inflated boot profile.

Rotary Pneumatic De-Icer Timer 42E00-6-C

Specifications:

Series: 42E00 Rotary Timer Series

System Type: Aviation Pneumatic De-Icer Control

Actuation / Drive Type: Motor-driven rotary switch / rotary pneumatic valve assembly

Operating Voltage: Typically 24V–28V DC (standard aircraft power bus for 42E00 series units)

Technical Documentation References:

Technical Order / Manual: AN 03-35B-40 / T.O. 15E3-2-8-3

Illustrated Parts Breakdown: AN 03-35B-41 / T.O. 15E3-2-8-4

Condition: A

Main Housing / Case : Looks intact, no large visible cracks or damage, although there are light visible surface scratches viewable from all angles.

Cover plate : Physical integrity appears to be satisfactory.

Knobs & Sliders : All present and appear in good shape.

Cosmetics : Minor wear and dust consistent with age.

Operational Status : Unknown, all material components are intact.