DALMD88 From United States of America, joined Jul 2000, 2454 posts, RR: 15 Reply 4, posted (6 years 8 months 1 day 17 hours ago) and read 2100 times:
All Boeing aircraft have some composites. Every wing to body fairing and flap fairing is composite. Also a lot of the wing panels are composite. I did work on a couple of the 737 that had the composite tails. They were a real pain. We found a lot of cracks. The aluminum ones rarely had any.