|Quoting yeelep (Reply 3):|
Its a cover for the fwd galley/lav grey water drain tube that ends at the fwd drain mast. Grey water drains through the tube whether its airborne or on the ground.
|Quoting aa777-200 (Reply 8):|
Whatever it may be it makes a good ledge to sit on while I am in the bin waiting for more bags to be sent up!