Normal (positive Rinne): AC>BC (mnemonics: A>B alphabetically)
Abnormal (negative Rinne):
    .Conductive hearing loss: BC>AC or AC<BC
    .Sensorineural hearing loss (partial): Normal results (i.e., AC>BC)
    .Sensorineural hearing loss (complete): no sounds whatsoever (no AC, no BC)

Mnemonics: A>B alphabetically

(Note: may try to massage the tragus of the non-tested ear to prevent conduction thru bone to the good ear)

~by Qt

References
https://books.google.com/books?id=CcJvIiesqp8C&pg=PA393&dq=rinne+test&hl=en&sa=X&ved=0ahUKEwismpGKqJ3SAhVRxGMKHXPXDS04ChDoAQgZMAA#v=onepage&q=rinne%20test&f=false

https://books.google.com/books?id=PveH8Xqh20oC&pg=PA10&dq=rinne+test&hl=en&sa=X&ved=0ahUKEwismpGKqJ3SAhVRxGMKHXPXDS04ChDoAQgqMAM#v=onepage&q=rinne%20test&f=false