When should the landing gear be lowered after reaching dead engine glide altitude (DEGA)?

Lowering the landing gear no later than high key is the correct practice because it allows for the necessary time to ensure the gear is down and locked prior to the critical phases of landing. High key represents a point in the pattern where the aircraft is at an altitude typically above the traffic pattern altitude, providing a good opportunity to configure the aircraft for landing without rushing the process.

By lowering the landing gear at or before high key, the pilot ensures that all systems related to gear operation can be checked, and any potential issues can be addressed without compromising safety. This timing also aids in the stabilization of the aircraft’s descent profile, allowing for a smoother transition from the high key to the low key and ultimately to the landing phase.

Other options may suggest lowering the gear at different times that could lead to insufficient time for checks, raising the risk of complications during the landing sequence. Thus, timely lowering of the landing gear is essential for ensuring safe and effective landing procedures when managing an engine-out scenario.