to Launch: Contingency Landing CriteriaWeather
criteria for a landing also pertain to a launch since the possibility
exists for a Return To Launch Site Abort (RTLS) or for an emergency
landing at an off-site location.
weather criteria pertain to the KSC Shuttle Landing Facility, the
Trans-Atlantic Abort Sites (TAL), the Abort Once Around (AOA) sites
of Edwards Air Force Base, and White Sands Space Harbor:
coverage less than 5 tenths below 8,000 feet with a clear line of
sight to the end of the runway.
opaque thunderstorm anvil cloud within 10 nautical miles of the
runway or within 5 nautical miles of the final approach path extending
to 30 nautical miles distance.
and the TAL sites, no thunderstorms, lightning, or precipitation
within 20 nautical miles of the runway, or within 10 nautical miles
of the approach path extending to 30 nautical miles distance.
for RTLS, 7 statute miles or greater
for the TAL sites and AOA, 5 statute miles or greater where microwave
landing system (MLS) instrument landing capability is available;
otherwise 7 statute miles.
component for Return To Launch Site (RTLS) not to exceed 15 knots.
For Abort Once Around (AOA) and Trans-Atlantic (TAL) contingency
landing sites the night-time crosswind limit is 12 knots.
not to exceed 25 knots
not to exceed 10 knots average, 15 knots peak
on final approach not within 10 degrees in azimuth and 0 to 20 degrees
a good-sense rule is in effect states: "Even when constraints
are not violated, if any other hazardous conditions exist, the launch
weather officer will report the threat to the launch director. The
launch director may hold at any time based on the instability of