Not that its actually designed for this purpose of course!
"Dave Kearton" wrote in
message news
"M. H. Greaves" wrote in message
...
| I saw a video about the extensive testing of the early 747's (not the
| 400's), and the test pilots had a big wooden skid attached to the rear
| underside, and were taking off at too steep an angle grinding the wood
skid
| along the ground; amazing!!
| shows just how strong they were and how they could stand up to rough
| treatment; of course the one at Aukland didnt have a wooden skid so the
| effect must have been quite sparking, ('s'cuse the pun!!)



I don't have the 747-400 manual on hand, but on one of the first few
pages
it mentions that the APU is as effective as a wooden skid, if you drag it
along 400m of concrete.





Cheers


Dave Kearton