Its called cycles you junior PhD aero experts....SWA flies way more cycles per month on a jet than most airlines I surmise.
I fly them and I used to build em so ...hmmm.

Would take a Boeing over a Airbus any day for durability. No....757 and 737 dont share a common fuselage barrel ...d'oh.

Calm down and say " aging aircraft issues". Good thing the who section didnt peel back ala Alaska 737.

Let the OEM and NTSB do their work folks and breath easy.

Jet Driver