Il sito flightglobal riferisce che tecnici NASA hanno rilevato la presenza di acqua che fuoriusciva dall’intertank che suddivide i serbatoi di LOX e LH2 dell’ET destinata a STS-118.
Sarà ovviamente necessario un intervento di ispezione ed eventuale riparazione, i cui impatti sulla missione 118 e le seguenti non è ancora stato stimato con certezza.
Direi che “piove sul bagnato”. 
E se dell’acqua si fosse fatta strada anche dietro la schiuma dell’ET? Cosa succederebbe una volta caricati i propellenti criogenici? 
[NASA: 'Water seeping from Space Shuttle Atlantis's propellant tank'](http://www.flightglobal.com)NASA has admitted that Space Shuttle workers discovered water beads coming out of orbiter Atlantis’s external propellant tank (ET)-118’s intertank this week.
The intertank is a riveted mid section of the shuttle’s ET (pictured below), which separates the liquid oxygen at the top of the tank from the liquid hydrogen at the bottom.
“It appears the water got into the stringers [panels] of the intertank during Hurricane Katrina,” says NASA. The tank’s stringer panels support the intertank’s structure and are placed around the circumference of that section of the ET.
NASA does not expect the investigation and repair work to impact on Atlantis’s readiness to carry out launch-on-need (LON) crew rescue support for the Shuttle programme’s next mission, Discovery’s STS-121, scheduled for 1 July, if it is damaged on ascent. NASA also expects Atlantis to meet its launch window for its expected August mission, STS-115, to the International Space Station.
However Shuttle programme sources have informed flightglobal.com that the issue could be more serious and may affect STS-115 and LON preparations.