"whenever it was available" is correct and can be used in written English.
For example, "I would stay at my grandmother's house whenever it was available."
He liked it, and began volunteering to drive that route whenever it was available.
Traditionally (I suppose), butter was the fat of choice, and Parmesan used whenever it was available and appropriate — that is, a good pairing.
55) Ten studies reported that children tend to consume obesogenic food and drink whenever it was available, at home or at school.
(District TB coordinator) However, this situation was not universal across all private facilities as there was evidence of particular private hospitals wholly giving the enablers' package to their DOTS nurses whenever it was available.
We examined information about feasibility whenever it was available, but ultimately did not include it among the characteristics reviewed in this study because comparable information was so often lacking from measure sources.
This will now activate 5.1 surround sound whenever it's available.
Mr. Loeser said the mayor's vehicles "use ethanol at all times when he is in New York City, and whenever it is available when he travels".
Human antiserum is used whenever it is available, because IgG from other species is far more likely to provoke an immune response that will eliminate the antibody and may lead to serum sickness (see immune system disorder: Type III hypersensitivity).
The unit can also alert you when your favorite team, singer or program is on the radio, so you can get an N.F.L./Rihanna/Car Talk fix whenever it's available.
On health risks, include the absolute risk whenever it is available in the press release or the research paper - ie if "cupcakes double cancer risk" state the outright risk of that cancer, with and without cupcakes.
Treatment decisions are made using evidence-based information whenever it is available to the clinician.
