4: Automatic Flight

Question 1

LNAV on T/O bank angle limit

Answer 1

Lnav engages at 50 ft but limits bank angle to 15 deg until 200 ft. Thereafter the normal 30 deg

(on FEB to FEQ the limit is 8 deg BA)

Question 2

When does the FMC transition to “on approach”?

Answer 2

When the airplane is within:
* 2 NM of the first app waypoint or
* 2000 feet of the airport elev, whichever
occurs first

Question 3

When the FMC is “on approach”, the following three features are available:

Answer 3

• UNABLE RNP alerting levels are higher
• setting MAA and MCP is set at least 300 feet
  above current altitude, VNAV remains in
  VNAV PATH
• if more than 200 feet below the path, VNAV
  commands zero V/S until intercepting the
  path

Question 4

Diff in LNAV engagement between single channel FD GA and dual channel auto GA

Answer 4

Single channel- engages at 50 feet
Dual channel- initially track hold function and then at LNAV engages at 400 feet