Quote:
(yes, it's possible I have too much time on my hands and I'm bored?)
According to the clock ay the bottom of the video ...
:13 seconds - gear starts down
:52 seconds - tire smoke (runway contact)
If we assume 140KIAS (typical DC-10 landing speed), that equals 236 feet/sec (no wind).
236fps x 39 seconds = 9204'
9204' / 5280 feet per mile = 1.74 miles
1.74 miles x 300 feet per mile (typical 3 degree approach) = 523'
I would call that a typical (IAW SOP) visual approach
Now ... what was the OP's question?
MM
only one problem with your rithmatic...Originally Posted by MaydayMark
Here's the way I see it ... (yes, it's possible I have too much time on my hands and I'm bored?)
According to the clock ay the bottom of the video ...
:13 seconds - gear starts down
:52 seconds - tire smoke (runway contact)
If we assume 140KIAS (typical DC-10 landing speed), that equals 236 feet/sec (no wind).
236fps x 39 seconds = 9204'
9204' / 5280 feet per mile = 1.74 miles
1.74 miles x 300 feet per mile (typical 3 degree approach) = 523'
I would call that a typical (IAW SOP) visual approach
Now ... what was the OP's question?
MM
you start the clock when the gear "starts" down...gear doors not closed until about 15 seconds to touchdown and in my jet "gear down" is not complete until the doors lights are out. Not too mention they cant put final flaps in until the gear is down unless they don't mind more chatter on the EGPWS.