기령이 오래된 UH-1H나 AH-1도 그렇지만, 특히 1976년부터 국내에서 조립생산된 500 MD 헬기의 퇴역이 급속히 진행되고 있다.
Especially since 1976, the retirement of 500 MD helicopters built and manufactured in Korea has been rapid while UH-1H and AH-1, which are old, are also being rapidly decommissioned.