Vintage Light Plane Maintenance Magazine December 1989 EUC, Excellent Used Condition. Very clean with only minor stains. See the pictures In this issue: 3M update; AC filters, Squawk Talk, Four-Cylinder Lycomings-Sequoia Aircraft Corporation's alfred Scott takes us inside the 320/360 family; Death of a Mooney-- Bad maintenance can put you head to cone with a pine tree; The Prop Strike Blues; Trichloroethane, New research suggests a link between corrosion and the popular cleaning solvent; The e=Engine Clinic-- Vapor pressure specs... And much more. 24 pages 8.5 x 11 inches Volume XI, NO. 12 Belvoir Publications Inc. SKU MM-0-08-23-012 Yes, we combine orders for shipping whenever possible. If did not combine the shipping on your order correctly when we combine the items and check the shipping, if it is less than the shipping charges that you paid, we will issue you a refund for the difference.