SUPPLEMENT 5
CAT II
OPERATION
AIRPLANE
F
LIGHT
S5-00 ANAC APPROVED
Page 4 code 01 REVISION 6
− APR mode selected on Flight Guidance Panel.
− Flaps 5.
− CAT II Decision Height setting on both Display Control Panels.
− On-side VOR/LOC active course valid.
− Cross-side data valid.
− Go-around not selected on either side.
− No back course selected.
For localizer, the following additional condition is required:
− Both LOC signals tuned and valid for at least 15 seconds.
If LOC indications differ by values above approximately 1/2 dot, an
amber LOC annunciator will appear flashing (for 10 seconds) then
steady on the left side of the PFD’s between EADI and EHSI.
For glide slope, the following additional condition is required:
− Both glide slope signals valid and both LOC signals tuned and
valid for at least 15 seconds.
If GS indications differ by values above approximately 2/3 dot, an
amber GS annunciator will appear flashing (for 10 seconds) then
steady on the left side of the PFD’s between EADI and EHSI.
For radio altitude, the following additional condition is required:
− Both radio altimeters signals valid and on scale.
If radio altimeters indications differ more than 10 ft approximately,
an amber RA annunciator will appear flashing (for 10 seconds) then
steady in the ADI.
EXCESSIVE LOCALIZER AND GLIDE SLOPE DEVIATIONS
WARNINGS
The on-side localizer and glide slope excessive deviations are
compared to the Cat II limits and displayed when the following
conditions are met:
− APR mode selected on Guidance Panel.
− Flaps 5.
− CAT II Decision Height setting on Guidance Panel.
− VOR/LOC is the active course is valid.
− On-side radio altitude between 500 and 80 ft.
− On-side localizer tuned and valid.
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