A Contract Mechanic describes the chain of events that involve a door slide on a transport category aircraft. The slide had slid out from the slide pack; was reinstalled; but not inspected per the air carrier's RII Inspection Requirements.

Narrative

We flew out of ZZZZ. I was flying on a transport category aircraft; I was the Flight Technician. We landed in ZZZZ1 for refueling; I was doing my transit check paper work; when I was asked by the First Officer (F/O); do you know about the door slide? My response was 'what door slide?' I had performed my Inspection; and every thing was OK. I proceeded to the door; and as I passed; the Captain whispered to me; 'I hope you can make a miracle'; apparently he had seen the door slide on the ground. I found the door slide lying on the Stairs Truck which was positioned there for deplaning of the aircraft. I inspected the door slide; found it intact and in serviceable condition. We proceeded to re-install the door slide back on the aircraft (the F/O helped me.) At that time I was unaware that the Air Carrier does require an RII Inspection if you reinstall a door slide.I notified Air Carrier Maintenance Control about the incident. I was unable to hear him so he called me on my cell phone; I explained what had happened and what I had done. I was never advised that I needed an RII. I told him we needed to re inspect the door slide at ZZZ. I was told it would be better in ZZZ1. Since the aircraft was ferrying there. We flew ZZZ. The flight crew and flight attendants de-planed and another crew went on board; there I again called Maintenance Control to find out what was set up in ZZZ1.A different Maintenance Controller told me he knew nothing about it; so I told him the situation all over again. He told me that at ZZZ1 we would re-inspect or change the door slide. When we landed at ZZZ1; I called to ask Maintenance Control if we were all set up to re -inspect or change the slide. I was told there was no slide or Maintenance available there; if I could bring back the aircraft to ZZZ; that we could do it there. Foolishly I agreed. We flew to ZZZ; again I called Maintenance Control to find out what they had set up in ZZZ when we got there. I was told nothing was set up for the door slide; no items written up. I stated I would self disclose if no action was taken; to re-inspect or change the door slide. They agreed; I still made a Maintenance entry in the Logbook when we got to ZZZ. The door was re-inspected and the RII completed on the aircraft. The flight crew and flight attendants filed reports and the FAA came to review the Logbook. I did miss an inspection on the door assist bottle on the door when I performed a Daily Inspection in ZZZ1. I also voided a write-up to reword it correctly; not to cover anything up. I stated that at ZZZ the door gate was hanging up; it did not come out and had to be re-checked at ZZZ2. At ZZZ; I did manage to free the door gate for the door; but did not state that. Which looks like it flew with an opened item; it did not.