In W. Germany (as it was then) the air control orders for BAOR exercises (sometimes a week or a fortnight long) used to be NOT ABOVE 150 ft agl for helicopters. We all used to do it, in relative safety because it was properly thought out, regulated and trained for.
It could get quite interesting when carrying an underslung load but we managed it for many years without incident.
P.S. When carrying out a concealed approach and departure there was NO minimum height for helis, only a lateral separation from obstacles. For under wires the minimum height was 2 metres. I recall it was 6 metres clearance from the obstacle above the aircraft and 3 metres clearance laterally.
Sid's photos show the Lynx well within the regulations.
Just can't see why some less experienced folk get bunched up about it.
