Per newswire yesterday:

HONOLULU, May 14, 2013 /PRNewswire/ -- Hawaiian Airlines, Inc. (the "Company"), a wholly owned subsidiary of Hawaiian Holdings, Inc. (HA), today announced its first-ever offering of Enhanced Equipment Trust Certificates (the "Certificates") which will be used to secure fixed, low-interest financing for the acquisition of six new Airbus A330 aircraft delivering over the next 18 months..

Are these 6 A330s net gain aircraft, or 767 replacements??