Robinson R22: A Pilot's Guide: Swan, John: 9781560274476: Amazon.com: Books
R22 Helicopter Flashcards Study Guide: Q&A covering the POH and basic, emergency, and IFR operations by Freddie Ephraim (2013-02-14): unknown author: Amazon.com: Books
Robinson R22: A Pilot's Guide: Swan, John: 9781560274476: Amazon.com: Books