Business Air who's parent company was named Tuggerah Lakes Air Services Pty Ltd operated between Sydney Wee Waa and
Quirindi was founded in 1979. It operated daily flights from Quirindi via Wee Waa.
Due to very low passenger numbers on occasion less than 1 pax per day the airline did not last long.

With thanks to Kay Pittman Honorary Secretary of the Quirindi & District Historical Society Inc, we a have a few articles on PDF format to view here.

"Quirindi Advocate" October 1979 of the "New daily air service to Quirindi".

Dorothy Durrant's "Quirindi 1966-1990 - Years of Change" Page 76-77

Business Air operated 3 aircraft:

VH-BCQ
Piper PA-31 Navajo
C/n (msn):31-7952134

VH-PNV
Partenavia P-68
C/n (msn):85

VH-IXB
Partenavia P-68
C/n (msn):154