Final answer:
Flight maneuvers that fully engage a single control surface or bring the aircraft near stall AOA are strictly regulated to ensure safety, allowed only in designated safe operational environments or during flight tests.
Step-by-step explanation:
The flight path of a commercial airliner is intricately managed by various regulations to ensure safety and efficiency in the airspace. Full application of any single flight control surface in a single direction, and maneuvers involving angles of attack (AOA) near the stall point, must be confined to safe operational environments.
This usually means such actions are only permitted during flight tests or under specific conditions where the safety of the aircraft and its occupants will not be compromised. Pilot training often covers these limitations to ensure a clear understanding of safe flight operation boundaries.