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A drainmast which releases water into an airstream traveling in a fore-aft direction includes a water-discharging exit on its underside for communicating with the airstream, a post-exit stage on its underside situated aft of the water-discharging exit, where the water-discharging exit is vertically

A drainmast which releases water into an airstream traveling in a fore-aft direction includes a water-discharging exit on its underside for communicating with the airstream, a post-exit stage on its underside situated aft of the water-discharging exit, where the water-discharging exit is vertically offset downward from the post-exit stage. The drainmast also includes a fairing having a mounting flange and a mast projecting downward from the mounting flange, the mast having a main body with a window and a door fastened to the main body to close the window.

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1. A drainmast which releases water into an airstream traveling in a fore-aft direction, comprising: a water-discharging exit on its underside for communicating with the airstream;a post-exit stage on its underside situated aft of the water-discharging exit; anda fairing having a mounting flange and

1. A drainmast which releases water into an airstream traveling in a fore-aft direction, comprising: a water-discharging exit on its underside for communicating with the airstream;a post-exit stage on its underside situated aft of the water-discharging exit; anda fairing having a mounting flange and a mast projecting downward from the mounting flange, the mast including a main body with a window and a door fastened to the main body to close the window;wherein the water-discharging exit is vertically offset downward from the post-exit stage. 2. A drainmast as set forth in claim 1, comprising a water-spraying wall situated between the water-discharging exit and the post-exit stage. 3. A drainmast as set forth in claim 1, comprising a water-kicking barrier extending downward from an aft end of the post-exit stage. 4. A drainmast as set forth in claim 1, comprising a water-escorting plank cantilevered from an aft end of the post-exit stage. 5. A drainmast as set forth in claim 1, comprising rails extending downward from lateral edges of the post-exit stage. 6. A drainmast as set forth in claim 1, comprising two water-discharging exits and wherein the post-exit stage is situated aft of both exits. 7. A drainmast as set forth in claim 6, wherein one water-discharging exit is a fore exit and the other water-discharging exit is an aft exit located aft of the fore exit. 8. A drainmast as set forth in claim 5, wherein the underside is formed at least partially by a foot. 9. A drainmast as set forth in claim 1, wherein the underside is formed only partially by the foot. 10. A drainmast as set forth in claim 1, comprising a foot which includes: a deck forming the post-exit stage;a pulpit located fore of the deck and having a bottom face on which the water-discharging exit is situated;a wall extending between the deck and the pulpit's bottom face to form a water-spraying step;a banister extending downward from an aft end of the deck to form a water-kicking barrier; anda lip cantilevered from an aft end of the deck to form a water-escorting plank. 11. A drainmast as set forth in claim 10, wherein the bannister includes side sections which funnel towards each other. 12. A drainmast as set forth in claim 10, wherein the lip has a duckbill shape causing the airstream to flow substantially evenly therearound. 13. A drainmast as set forth in claim 10, comprising rails which extend downward from lateral edges of the deck. 14. A drainmast as set forth in claim 1, comprising a heater adapted to heat a heat sink to transfer heat to a region of the underside. 15. A drainmast as set forth in claim 1, comprising a heater including a supply connector, a return connector, and a conduit forming an electrical path between the connectors; wherein the conduit includes: tube-heating sections which do not widen the drainmast span;at least one sink-heating section that wraps around a heat sink; anda tube-bridging section that is elevated relative the other sections. 16. A drainmast as set forth in claim 1, wherein the mast comprises a hollow within the mast for housing interior drainmast components. 17. A drainmast as set forth in claim 16, wherein the fairing comprises a bottom panel forming a fore region of the underside. 18. An aircraft comprising the drainmast set forth in claim 1 mounted to its fuselage, wherein an aircraft water line communicates with the drainmast's water-discharging exit.