In which part of the flight does a plane reach maximum lift? My logic: I think a plane reach maximum lift in a horizontal flight, when a plane start rolling on a runway, landing gear produce more friction and when landing, flaps and landing gear generate more fricition with the air. In conclusion i think the maximum lift is like this: Horizontal flight > Takeoff > Landing
In a steep turn, at high speed.
In addition to the lift needed to compensate weight, a turn requires the wing to produce additional lift to accelerate the aircraft sideways. Speed is required so enough dynamic pressure is available to produce all that lift.
The same happens at the bottom of a tight loop when weight and the lift needed to compensate centrifugal forces add up.
In level flight the lift must equal the weight of the aircraft (which will typically reduce as it burns fuel). If lift exceeds weight then the aircraft will accelerate upwards; thus is something that we typically see at takeoff, and hopefully just before landing when the aircraft‘s rate of descent drops to almost zero. The maximum lift would be generated when the aircraft pulls out of a steep dive, converting kinetic energy into lift which would allow more lift than could be generated by the power of the engines alone.
Technically speaking any airplane generates maximum lift just before the wings come off. Whether that is interesting to obtain or not, depends on your need for adrenaline.
During a normal flight in a one engine GA airplane, the moment at which most lift is created is during the first few seconds after rotation.
In more agile airplanes like military jets, maximum airlift is created well beyond bed time, which is not desirable at all.
The most common situation for any airplane to get closest to its maximum airlift is when it hits turbulent updraft immediately after turbulent downdraft, which occasionally is known to make the wings come off.