. Johan visit at the Longest Yarn display.   Sunday Johan arrived in his Jeep as we were still working on the displays, he said he liked the Jeep and we had our photo taken beside it, afterward we sat in Johan's Jeep for another photo,  I did the pointing thing ' your going down '  that Tom Cruise did in the NASCAR film ' Days of Thunder ' .  Johans Jeep is original six volt and starts just like a showroom car, he's got that thing earthed perfectly.      I shall be meeting Johan this week for a meal after the rest of his friends arrive.         Norman D. Landing, Forum Normandy Correspondent, 02 June  2O26.   ..

Looking at the date (1971), I am more convinced this a mask for the HGU-35/P. Looking at: date, color, mounting to the helmet. The HGU-35/P helmet was developed in the late 1970s in order to meet US Navy requirements for a new lighter fixed wing helmet. Experience from the Vietnam conflict had shown that the APH-6 helmet and A-13A oxygen mask combination was not satisfactory any more. It had excessive weight and bulk, poor fit and discomfort, it impaired vision, in was unstable under high "g", and it had a misplaced centre of gravity. The HGU-33/P and HGU-34/P helmets and MBU-14/P oxygen mask had been developed as a short-term solution to the problem. They were lighter than the APH-6/A-13A combination but they did not solve other problems like the misplaced centre of gravity.  The HGU-35/P was developed as an integrated helmet oxygen/communications system. The integral oxygen subsystem featured a new lightweight low-profile mask (Carleton mask), an integral oxygen duct through the helmet, and an external hose with communications wires connecting to the helmet at the rear. This configuration was meant to enhance aircrew performance under high "g" loading due to the reduction in mask weight and elimination of the front "elephant trunk" oxygen hose. The HGU-35/P Operational Test and Evaluation was carried out in Spring 1979 as the final phase in test and evaluation before a production decision. Apparently the helmet did not meet expectations and the helmet was never put into production.

Hi VN, that's a beautiful piece! I love that it includes all the booklets. Just a quick tip for using the forum: there is a 'Quote' button right below everyone's posts. If you click that, a small button will pop up in the bottom right corner that says 'Quote 1 post'. If you click that popup, it will automatically start a new reply for you. This links your response directly to their message so people can easily click back and see what you are replying to.   Note: You can also delete parts of the quoted text inside your draft to slim it down. This is great for removing big walls of images so the thread stays clean! Hope this explanation helps! Welcome to the forum. :)

I recently got this vest and the original handbook, it's in great condition, everything it's functional without problem

(reply to 6 corbra actual)I collec wartime stuffs in vietnam and surplus, I recenly got this ARVN m69 body armor, check this beuty out

Can’t wait to see what you’ll find next.

Ive been working on my 620 and both 659s. I have battery packs to replace the internal battery thats non existent.  Hoping to power up soon off the MB and test one out.

More reading show the 51/p is F-111 specific 

Flight helmet is a HGU-51/p… mask was (?) modified for use with it… it’s close    no doubt you have a one off..👍👍

https://www.salimbeti.com/aviation/helmets7.htm