TIA ANSI/TIA-455-15A PDF

(Footnote 1) The intent of this test is to demonstrate the ability of a fiber optic component device-to-cable attachment(s), and any interface area of mated component device seals, to perform satisfactorily during, and subsequent to, simulated rapid descents from high altitude, with attendant moisture condensation. Typically, fiber optic interconnecting devices are most commonly tested by this method, but the methodology can be applied to various other types of fiber optic components.

Footnote 1 - This method is similar to Method 1004.1 of MIL-STD-1344. However, the MIL-STD requires immersion in a salt solution, while this method uses distilled water immersion only.