British Aircrew Mask PEC Mk3, or MSC3
Mk3 Stores Ref: 6D/2173 | Drawing No: JC.169-237B
The Mk3 PEC was only used in the RAF for Vulcan and Victor rear crew.
A "Multi Service Connector Type" PEC for low altitude, it provided connections for: breathing oxygen, bail-out oxygen cylinder, AVS, and communications.
The Mk3 PEC (MSC3) was designed to work with constant flow emergency oxygen.
The Airmed document WW191 from 1975 states the Mk3 PEC had become obsolete and was superceded by the Mk 7.
Note: This PEC is commonly know as an "Hymatic M.S.C.3", or Milti-Service Conenctor, (Hymatic was the manufacturer).
RAF Resources
AP
Quote:
AP1182, Volume 1, Section 1, Chapter 1, Figure 1 (AL66, October 1961)
This image shows detailed engineering drawings of the Mk3 PEC / Hymatic MSC.
Manufacturers Resources
Overview of personal equipment connectors, Airmed, WW191 Issue 4, July 1975
This image shows the Mk3 PEC / Hymatic MSC.
