LNAV Bank Angle Protection
For LNAV operation:
-The FMC provides a real-time bank angle limiting function
-This function will protect the commanded bank angle from exceeding
the current available thrust limit.
-This bank angle protection is not available when LNAV mode is
deactivated.
Quote from a presentation by Catherine Davis of Boeing Flight Operations Engineering, entitled B737-High Altitude Maneuvering in May 2004.