Narrative:

We arrived at the aircraft to find the mechanic performing a GPS test and indicating he was extremely busy. He was working on two different aircraft; and had already performed an ETOPS check; changed the AC (aircraft) O2 bottle; changed a brake and a main gear tire. He was now working a GPS write-up.once a successful GPS system test was conducted; the logbook was presented to the ship's captain with an airworthiness release sign-off; a signed di (deferred inop) log with no deferrals; no di stickers were placed in the AC; and the crew was informed that the AC was ready for flight. An ETOPS sign-off had also been entered in the AC logbook.the mechanic returned to the AC shortly before departure time and stated that he had swapped mmr's (multi mode receivers); that maintenance control had advised that this was not an approved procedure; and that he had subsequently swapped them back to their original locations. After doing so; he performed another GPS test (which extended beyond our scheduled time of departure). After a successful test; we were advised that the AC was again ready for departure.departure was uneventful. About an hour into the flight; we received an ACARS message from flight control asking to confirm an added MEL and a change to our ATC flight filing. This was the first time we were informed of the presence of an MEL relating to our flight.the captain reviewed the aircraft maintenance log and discovered that the mechanic had signed a deferral for the GPS system but had not completed the process by entering it in the di log; placing a di sticker; notifying the captain during the face-to-face consultation (and; it appears he did not notify flight control until after our departure).

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Original NASA ASRS Text

Title: B767 First Officer reported that a mechanic did not complete the proper maintenance records before they departed.

Narrative: We arrived at the aircraft to find the mechanic performing a GPS test and indicating he was extremely busy. He was working on two different aircraft; and had already performed an ETOPS check; changed the AC (Aircraft) O2 bottle; changed a brake and a main gear tire. He was now working a GPS write-up.Once a successful GPS system test was conducted; the logbook was presented to the ship's Captain with an Airworthiness Release sign-off; a signed DI (Deferred Inop) Log with no deferrals; no DI stickers were placed in the AC; and the crew was informed that the AC was ready for flight. An ETOPS sign-off had also been entered in the AC logbook.The mechanic returned to the AC shortly before departure time and stated that he had swapped MMR's (Multi Mode Receivers); that Maintenance Control had advised that this was not an approved procedure; and that he had subsequently swapped them back to their original locations. After doing so; he performed another GPS test (which extended beyond our scheduled time of departure). After a successful test; we were advised that the AC was again ready for departure.Departure was uneventful. About an hour into the flight; we received an ACARS message from Flight Control asking to confirm an added MEL and a change to our ATC flight filing. This was the first time we were informed of the presence of an MEL relating to our flight.The Captain reviewed the aircraft maintenance log and discovered that the mechanic had signed a deferral for the GPS system but had not completed the process by entering it in the DI Log; placing a DI Sticker; notifying the Captain during the Face-to-Face consultation (and; it appears he did not notify Flight Control until after our departure).

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.