Narrative:

Tower called for a release on aircraft X and a release was given. The aircraft checked on and I climbed the aircraft to 19;000 feet and indicated so on the strip. About 15-20 minutes later aircraft X asked if they were still with me. I looked for them on the scope in my airspace and in the adjacent center's airspace; and asked them to verify code. I checked for a departure message and the flight plan was already departed. They verified their squawk code. The code came up about 45 miles into the adjacent center airspace at 19;000 feet. I called the adjacent sector; got the data block tracked up and gave radar contact. I don't know for sure; but suspect the transponder was never turned on.

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Original NASA ASRS Text

Title: ZMP Controller reported failing to acquire a Departure Controller's data tag on their radarscope and forgetting about the aircraft; which entered adjacent airspace without a hand off.

Narrative: Tower called for a release on Aircraft X and a release was given. The aircraft checked on and I climbed the aircraft to 19;000 feet and indicated so on the strip. About 15-20 minutes later Aircraft X asked if they were still with me. I looked for them on the scope in my airspace and in the adjacent Center's airspace; and asked them to verify code. I checked for a Departure message and the flight plan was already departed. They verified their squawk code. The code came up about 45 miles into the adjacent Center airspace at 19;000 feet. I called the adjacent sector; got the data block tracked up and gave Radar Contact. I don't know for sure; but suspect the transponder was never turned on.

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.