Manual (Item) - Hs748T Aircraft Planned Servicing Schedule - Removal And Installation Historical information Description: SUPERSEDES AAP 7211.004-6-4, PUBLISHED APRIL 1982. 150 pages. Published by RAAF. Published January 1987. AAP 7211.004-6-4. HS748.T Aircraft Planned Servicing Schedule - Special Servicings Level of Importance: World.