4 ms·
It's mentioned briefly in: https://ad.easa.europa.eu/blob/2018-23-51_Emergency.pdf/EAD_US-2018-23-51_1 https://ad.easa.europa.eu/blob/2018-23-51_Emergency.pdf/E
by cjbprime 8y ago
It's mentioned briefly in: https://ad.easa.europa.eu/blob/2018-23-51_Emergency.pdf/EAD_US-2018-23-51_1 https://ad.easa.europa.eu/blob/2018-23-51_Emergency.pdf/EAD_..., and it's optional as a consequence of the entire AoA set of visual indicators being optional.