Minimumspræstationsnormerne for instrumenter og udstyr er de normer, der er foreskrevet i de gældende European Technical Standard Orders (ETSO) som angivet i de gældende specifikationer vedrørende European Technical Standard Orders (CS-TSO), medmindre der foreskrives andre præstationsnormer i operations- eller luftdygtighedskodeksen.
Instruments and equipment minimum performance standards are those prescribed in the applicable European Technical Standard Orders (ETSO) as listed in applicable Specifications on European Technical Standard Orders (CS-TSO), unless different performance standards are prescribed in the operational or airworthiness codes.