HAWK21M From India, joined Jan 2001, 31450 posts, RR: 57 Posted (8 years 10 months 3 weeks 6 days 13 hours ago) and read 1446 times:
Is it Mandatory for Activating the CVR CB during a Mx towing operation from one bay to another parking bay adjacent.
In other words,Everytime the Aircraft is moved [Towed/Taxied] the CVR CB should be in.
Air2gxs From , joined Dec 1969, posts, RR: Reply 2, posted (8 years 10 months 3 weeks 6 days 6 hours ago) and read 1409 times:
Yup, its all operator specific. I've worked for airlines that required the CB, for both CVR and FDR, pulled and I've worked for operators that insist (checklist item) that they are in.
On reflection, in the past ten years or so, as the industry has moved from tape based to digital based recorders, the tendency to pull the CB has gone away. My guess is that since we (maintenance) are not eating into the life of the CVR or FDR recording medium, our operators will insist that the recorders are operative in case of a problem, so the "tapes" can be reviewed.