A research submarine known as deep flight i included these airplane features turned upside down

Below you can find the A research submarine known as deep flight i included these airplane features turned upside down Jeopardy Words Answer. The answer to A research submarine known as deep flight i included these airplane features turned upside down has 5 letters. This clue belongs to the Transportation category and is part of Jeopardy Word Level 1684. If you scroll near the bottom you will find other clues and answers part of level 1684