Summarised from the FCOM (B744/-8).
AFDS needs to annunciate LAND 3 for 3B.
AFDS will not change annunciation from LAND 3 to LAND 2 below Alert Height (200’ RA).
Autopilots protected
At or Below A.H.; -
Captain should not interfere unless obviously required or ‘NO AUTOLAND’ annunciated.
NO AUTOLAND annunciated on the AFDS requires a CAT 1 minima to be used.
Unrelated Caution messages are inhibited Therefore any Master Caution Light or Aural Signal is critical and requires visual landing or go-around.
At low RAs, excessive deviation from LOC or G/S causes associated scale and pointer to flash.
Above Alert Height: If a/c correcting may continue.
Below Alert Height: Go-around or visual landing.Autopilot inadvertently disconnected below Alert Height: Go-around or manual visual landing.
If going around, must press TOGA sws otherwise FDs remain in Approach mode
Autoland - Additional Callouts
At 40’ if “FLARE” not annunciated. PM: ‘No Flare’ PF: Takes corrective action.
At 25’ if “IDLE” not annunciated. PM: ‘Retard’ PF: Takes corrective action.
On Rwy if ROLLOUT not annunciated. PM: ‘No Rollout’ PF: Takes corrective action.
Hope this helps
P.S. One time an F/O gets to call the Captain a Retard and doesn't have to buy the Crew drinks!