AC 20-127, ADVISORY CIRCULAR, USE OF SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) CLASS H11 BOLTS (8 JUL 1987)

AC 20-127, ADVISORY CIRCULAR, USE OF SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) CLASS H11 BOLTS (8 JUL 1987)., This Advisory Circular (AC) provides guidance on the use of S&i-Automotive Engineers (SAE) Class Hll bolts in primary structure on all aircraft, including gliders and manned free balloons, and on aircraft engines and propellers.