Airplane Canyon is a deep west Oahu boat dive centered on the remains of a small passenger aircraft resting among reef fingers and sandy canyons offshore from Waianae. The wreck is only part of the appeal, because the surrounding ledges and coral growth create a wider reef dive where snapper schools and general reef life fill in the canyon structure around the fuselage. This is not an entry-level wreck. The site sits well below casual recreational depth, works best with a clean descent and ascent plan, and feels most comfortable when visibility is settled enough that the aircraft and surrounding reef structure can be read clearly from the start of the dive.