In American English, a personal assistant is usually an aide (nurse’s aide, presidential aide) but an inanimate object or process is always an aid (hearing aid, first aid).
Quan's aide appointed to Oakland school board Quan's aide appointed to Oakland school board Washington, 42, was appointed by the board to fill a vacancy that will be created on July 1, when board member Gary Yee becomes the acting superintendent. Washington, whose children just finished kindergarten and third grade at Montclair Elementary School, said she is still discussing with Quan how to handle both roles.
June 15, 2013 - San Francisco Chronicle
Aide Clarifies Weiner’s Claim on Coining of ‘Obamacare’ Anthony D. Weiner, a candidate for New York City mayor, said in an interview that he had come up with the term, but an aide later said that Mr. Weiner meant he was the first on the left to embrace it unapologetically.
June 13, 2013 - New York Times
IHT Rendezvous: European Aid to Egypt ‘Ineffective’ European Union aid to Egypt has amounted to the equivalent of $1.35 billion in recent years. But, according to the alliance’s own auditors, much of the money is unaccounted for.
June 18, 2013 - New York Times
Will Rite Aid Beat Earnings Est. Again? Rite Aid Corp. is set to declare its first-quarter fiscal 2014 results on Jun 20.
June 17, 2013 - Zacks via Yahoo! Finance