The Fifteenth Pelican(1966)
(A book in the Flying Nun series)
A novel by Tere Rios
The daughters of charity at the convent santanco were shocked. a nun doesn't fly! But Siter Bertrille upset more rules than the rules of gravity, and soon the convent, the mother superior and the town of san juan were shaken by her antics. Basis for the Hit television series, this wonderful story of a flying nun is modern classic of humor chosen by Best-in Books and a selection of the Catholic Digest and Catholic Family Books.
Used availability for Tere Rios's The Fifteenth Pelican