On Sat, 30 Jan 2010 08:35:54 -0800 (PST), T8
wrote:

It's probably possible to land a 15m glider in negative flap, but
you'd need a final approach speed of 70 kts to do it. From the
description of this incident, it sounds like the pilot was closer to
50 kts and certainly under 55.

Well, I've already seen an ASW-27 land with fully negative flaps aith
a normal approach speed of about 50-55 kts. Impressive nose-up
attitude, but otherwise unproblematic.