AD NO.
2021-0168
SUBJECT
ATA 31 – Indicating / Recording Systems – Control Unit – Inspection
APPLICABILITY
EC 130 B4 helicopters, all serial numbers (s/n) that have embodied modification (MOD) 073537 in production; and EC 120 B helicopters, all s/n; and AS 350 B2 and AS 350 B3 helicopters, all s/n that have embodied MOD 073273 in production, except those that have also embodied MOD 074280 in production.
ISSUED BY
EASA