AA has a very large fleet of B-757-200s. Most are less than 12 years old. AA
is currently modifying the B-757-200s they own/lease (with RR
engines) with winglets.
However, when AA
bought TWA, the also received almost new TW
B-757-200s (with P&W engines). These are some of the last B-757s built. IIRC, TW
ordered these airplanes in 1998-2000. AA
continued to take delivery of these airplanes from Boeing after they bought TWA. So, these B-757s have plenty of years of service left in them.
I know that because the TW
B-757s really don't fit in the AA
fleet as not only are the engines different, but so is the avionics suits. But, the question remains, will AA
modify these airplanes with winglets along with the original AA
Even if AA
eventually sells these B-757s, or returns them to the lease holders, AA
still plans on flying them for at least a few more years. The winglet modification will pay for itself within 6-12 months, depending on utilization. The winglets will also increase the value of these jets. The winglet mod gives around a 5-7% reduced fuel comsumption, and at least a 7% decrease in drag. Even if fuel prices go back to $30 per barrel (yeah, right), the improved fuel economy of winglet equipped airplanes will still be better than like types without winglets.