No, but they'd have the LOA request e-mail address at the company for him. The union board would give him the quickest response, but if for some reason he doesn't want to use that, one of our stewards would surely be able to find the address for him. As would CRC.
Sorry, I just don't understand how a Netjets crewmember comes here for information. Why not use the Union board or why not call HR or CRC as you said.
The loa request email address is available to all, with the slightest of effort. But, good luck, enjoy Singapore.