Approved, in headlines, 3 letters
Approved, in papers, 3 letters
Authorized, briefly, 3 letters
Decided to move forward on, 3 letters
Gave a thumbs-up to, 3 letters
Gave one's blessing to, 3 letters
Gave the go-ahead to, 3 letters
Gave the green light, 3 letters
Gave the thumbs-up to, 3 letters
Initialed a request, 3 letters
Put one's initials on, perhaps, 3 letters