CWAFlyer From United States of America, joined Mar 2005, 690 posts, RR: 1
Reply 2, posted (10 years 1 month 1 week 6 days 1 hour ago) and read 2011 times:
Yes. Most try to. A lot of the spares are used for charters, especially
during the NFL season. There are times that due to maintainence,
damage, airworthiness directives, etc, the spares are not available.