"becomes available when" is a correct and usable phrase in written English.
You can use this phrase to indicate a certain condition must be met before something can be accessed or used, for example: "The bonus feature becomes available when you reach Level 10."
MLB said that features would be added throughout the season, including a "pitch tracker" which becomes available when games move to major parks.
The fire, which has burned more or less constantly since Sept. 11, is fed by the huge compilation of buried office material and the added oxygen that becomes available when some of the ruins are removed.
As for the extent interpretation, it becomes available when "the event in the first clause is done to such an extent" that the "result is the state" expressed by the part after -de (Li and Thompson 1981: 626).
For overactive bladder, Lee recommends pelvic exercises and distraction techniques to get the patient through the time until a bathroom becomes available when a urge hits.
Most of the nitrogen fixed by legumes becomes available when crop residues are left on the plots (Butterworth et al. 2003).
Taken together, these results show that C65 becomes available when the carrier is locked in the matrix state by BKA, whereas C229 only becomes available as a result of thermal denaturation.
The trust would become available when the child reaches the age of twenty-five.
Sanchez, who is hitting.303, became available when the Royals obtained Neifi Perez from Colorado last week.
He was replaced nine months later by Walter Kerr, who became available when The New York Herald Tribune ceased publication.
The seat became available when Kathleen Murray, a Republican first elected in 1998, resigned to become Hempstead town clerk.
The parcels, measuring 21.5 acres and 3.5 acres, became available when the county began consolidating its property two years ago.
