Airworthiness directive indicates 51. https://ad.easa.europa.eu/blob/2020-06-14.pdf/AD_US-2020-06-14_1 https://ad.easa.europa.eu/blob/2020-06-14.pdf/AD_US-2020

Airworthiness directive indicates 51. https://ad.easa.europa.eu/blob/2020-06-14.pdf/AD_US-2020-06-14_1 https://ad.easa.europa.eu/blob/2020-06-14.pdf/AD_US-2020-06-...