Modular drainmast for aircraft

A drain tube apparatus for an aircraft drainmast assembly of the type that comprises a hollow fairing having a base for mounting to an aircraft that is joined to an aerodynamicaly shaped mast configured such that the mast protrudes into the surrounding airflow when the mounting base is attached to an aircraft, the mast having at its end distal the fairing an exit hole at the tip thereof, the drain tube apparatus comprising a drain tube assembly adapted to be affixed at a single location relative to the fairing and extending through the hollow fairing without contact therewith and terminating at the exit hole and supported by an elastomeric fitting located in the exit hole which receives the end of the heated drain tube and resiliently supports the end of the heated drain tube within the mast at the exit hole, the drain tube assembly including an electrothermal heating element.