This British Civil Aircraft Inspection Procedures publication is 12 cm thick. It is illustrated and covers; Basic Procedures, Airframe, Engine, Propeller. Power Plant, Electrical Equipment, Miscellaneous, Radio, and Test Equipment It is in the original British Air Registration Board heavy duty steel post binder with deep burgundy cloth boards that are in good condition with gilt text on the front and spine the binder has come away from the steel plate a little at the top but still functions fine ( see pics ) the first page has light foxing but all others are clean and crisp. This is a great rare find that will delight aviation enthusiasts and specialists alike and will enhance any collection Sold and posted in the UK