The lists have the following fields:
The second letter, possibly followed by digits, is the
launch success fraction
(see the
definitions section
)
Usually the launch success fraction code
is S, F or U for Success, Fail or Unknown. Success implies propulsive success only, even if no data was returned
from the payload. Also used is E, for pad explosion (no launch occurred, but included in the lists for completeness).
For orbital launches partial success/failure values are sometimes given, e.g. OS80 or OF40. The values between 00 and 99
indicate a percentage success to be used in statistical assessments of launch vehicle reliability as originally described in
JSR 669
and here in
the launch success fraction
part of the definitions section.
For orbital missions this field is normally blank, but is sometimes (mis)used to record an additional flight ID.