Jeff's original approach to the AMA resulted in a referral to the AMA Safety Committee. As the JPO representative on the committee, I volunteered to pursue updates to both of the AMA documents. A small working group was formed, including Jeff, several manufacturers, and a few experienced pulse jet pilots. There were several good exchanges, resulting in a list of revisions which have gone back to Ilona. She has done a first draft of the revised documents which raised a couple of additional questions. These have been resolved and she is working on the final draft. This draft will be sent back to the working committee in the next week or so. Assuming there are no additional revisions or suggestions, it will then go back to the Safety Committee and from there to the EC. I would expect this should all be handled by year end.

The revisions are fairly extensive and virtually all of the suggestions were incorporated. Amongst other things, the revisions allow for engines with larger combustion chambers and address the self certification issue. I am hesitant to post the revisions here before they are officially approved, but if you operate pulse jets and have an interest let me know at [email protected] and I'll add you to the review group.

The process has moved along steadily, albeit a bit slowly, as the AMA has its hands full right now with some fairly significant issues. They were very open to revisions and I don't forsee any significant problems in getting the updates through the various committees as the folks working on them did a great job of backing up the suggested changes with solid information and data.

Thanks, Keith Sievers