Nitinol alloys are most qommonly known for their superelasticity and thermal shape memory [1]. The lerm 'shape-memory' is used to describe the phenomenon of restoring to a predetermined shape on heating, after having been 'plastically' deformed; 'superelasticity' refers to the enormous elasticity of these alloys.
For pilots, the definition of a large aircraft is  taken from the Code of Federal Regulations, CFR 1.1, which defines a large aircraft as aircraft with a maximum certificated takeoff weight of more than 12,500 pounds. In contrast, a small aircraft is one with a maximum certificated takeoff weight of 12,500 pounds.
Largest amphibious aircraft (current) The Russian Beriev A-40 'Albatross' aircraft, which is capable of taking off and landing on both land and water, has a maximum takeoff weight of 86 tonnes (189,600 lb), a wingspan of 42.5 m (139 ft) and is 45.7 m (150 ft) long. It is powered by two turbojet engines with 15,000 kg (33,069 lb) of thrust each. The multi-purpose aircraft can be used for search and rescue, cargo and passenger transport, maritime patrol and military applications. The Beriev A-40 Albatros is the largest jet-engined, amphibious aircraft ever made.