CX flyboy From Hong Kong, joined Dec 1999, 6694 posts, RR: 55 Posted (15 years 4 months 1 week 1 day 14 hours ago) and read 800 times:
Not as interesting a post, as the topic may suggest!
I have seen many BA 757s and 737s in new and old colours with a ring around the nosecone. They are black rings, so they stand out a lot against the new white scheme. Does anyone know their purpose?
I also saw a couple of their 767s in the old scheme with the chequered black and white circle on the nose. (Like the crash test symbol!!) I assume that it is something to do with the center of gravity along the longitudinal axis of the aircraft, but why?
LH423 From Canada, joined Jul 1999, 6501 posts, RR: 53
Reply 2, posted (15 years 4 months 1 week 1 day 13 hours ago) and read 687 times:
Someone else posted this before, and if I recall correctly it has to do with lightning. Apparently the ring is painted with highly metallic paint, that due to the fibre-glass nosecone, if struck by lightning it would damge the RADAR inside. The paint acts as a deflector, and moves the electricity around the nosecone and RADAR.
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