Flight management system (KNS-
660) flight test - Perform as fol-
A triangular test flight shall be performed. Satisfacto-
ry performance shall be demonstrated by flying over
three checkpoints whose latitude and longitude are
known, and comparing them with the flight manage-
ment system coordinate readouts. The aircraft shall
establish a low altitude, compatible with aircraft safe
ty and applicable Laws and Codes of Flight which will
allow accurate sighting of ground landmarks. An alti-
tude of 1000 feet is recommended whenever possible.
a. Flight management system -
Set up and operate in accor-
dance with TM 55-1510-218-
b. Insert the coordinates of two
distant ground checkpoints
and point of departure. Dis-
tances between ground check-
points should be far enough
apart to provide a 1 hour tri-
angular closed course.
c. Fly the triangular course and
monitor the navigation instru-
ments for proper operation.
d. Check the operation of the
system in the RNAV ENR-
mode, and verify the opera-
tion of each sensor (BLEND,
OMEGA, and GPS) as appro-
e. Using the RNAV APP mode
perform an RNAV approach.