A Mechanic reports a Raytheon Beechcraft 1900 performed an air turnback due to an Anti-Skid Fail annunciator illuminated after takeoff. Mechanic raised concerns the paperwork for the replacement Anti-Skid Control box did not look normal; but was assured by his Management the paperwork was appropriate. Control box was removed one month later for insufficient documentation.

Narrative

A Raytheon Beechcraft 1900 did an air return to ZZZ because the Anti-Skid Fail annunciator illuminated. Once on the ground; we troubleshot the problem and decided to replace the Anti-Skid Control box. It was sent up from ZZZ1. When I received the part; I noticed the paperwork with it didn't look like the paperwork we usually get with parts. It did have a lot of the information that should be there; but raised concern to me. I brought the paperwork to my Supervisor; Mr Y; who also noticed it didn't look like the normal paperwork. He attempted to contact Management in ZZZ1. I was told he had talked to Mr Z; and that because the part didn't come from one of our usual vendors [suppliers]; that was why it didn't look normal; and that it was OK and that it was OK to install the part. I installed the part; ops checked the Anti-Skid System and signed-off all required paperwork. The aircraft was returned to service.A month later I was informed that the paperwork in question was not sufficient to install the part. I was instructed to IMMEDIATELY remove the part [Anti-Skid Control box] and install one with approved paperwork. I did. Suggest training on identifying and approving parts and associated paperwork [that is] OK to use on aircraft.