Miscellaneous aircraft equipment - USA Voorschrift, Technical Manual, 1-416 Airplane hydraulic systems - USA Voorschrift, Technical Manual, 1-411 Aircraft engine operation and test - USA Voorschrift, Technical Manual, 1-408 Aircraft engines - USA Voorschrift, Technical Manual, 1-405 Airplane inspection guide - USA Voorschrift, Technical Manual, 1-415 Aircraft engine operation and test - USA Voorschrift, Technical Manual, 1-408 Airplane structures - USA Voorschrift, Technical Manual, 1-410 20-MM automatic gun M1 and 20-MM aircraft automatic gun AN-M2 : ordnance maintenance - USA Voorschrift, Technical Manual, 9-1227