Alaska Airlines Boeing 737-990 ER SSWL N492AS (msn 44110) (UNCF) DCA (Brian McDonough). Image: 953614. Posted on May 2, 2021 by Bruce Drum Posted in Alaska Airlines Tagged Alaska Airlines, Boeing 737-990 ER SSWL, msn 44110, N492AS, UNCF Leave a comment Copyright Photo: Alaska Airlines Boeing 737-990 ER SSWL N492AS (msn 44110) (UNCF) DCA (Brian McDonough). Image: 953614. Rate this: Related