MSFC SKYLAB AIRLOCK MODULE : Vol. I Final Report NASATMX-04810 contract no. N74-26321 Search for that at http://ntrs.nasa.gov ; should have the data you're looking for. (I was quite surprised, myself, to learn the airlock is only 15 k-lb vs. the 49,000 listed!) Short answer: there was a deployment assembly to erect the ATM (Apollo Telescope Mount). Unlike the side-mounted, unprotected solar "wings," it deployed as-planned. For a NASA doc. it's short; just 77 pages... Ravaun (laconic mode)