Tolong jelaskan mengenai Retired fleet dari Korean Air dalam bahasa sunda

McDonnell Douglas DC-10 (retired 1989??)

McDonnell Douglas MD-11 (retired 1999)

McDonnell Douglas MD-80 (retired 2003)

SKYPASS is the frequent flyer program of Koréan Air.  "SKYPASS" also refers to the blue card which Koréan Air frequent flyers are given.  SKYPASS's motto is "Beyond your Imagination," which is also printed on the card. The program's elite levels are comparable to those of other airlines' frequent flyer programs, requiring members to fly a certain number of miles per two-yéar cycle. Qualification for the highest level is based on lifetime flight miles, requiring a customer to fly 1 million miles. Membership in this level is granted for life.