Relier Pairs AVIATION ABBREVIATIONSVersion en ligne Match the abbreviation with the correct meaning. par Steven Rafael Torres Orozco 1 AD 2 SL 3 S/N 4 P.S.I 5 SB 6 P/N 7 SRM 8 FT 9 LB SERVICE LETTER SERIAL NUMBER POUND PRESSURE SQUARE INCH PART NUMBER STRUCTURAL REPAIR MANUAL FOOT AIRWORTHINESS DIRECTIVE SERVICE BULLETIN