Narrative:

A learjet; heading to pwa was assigned 110 but read back 100. Pilot was corrected. Several minutes later; handed off to okc-a; and switched. Later tried to drop data block; and noticed I had track control. I also noticed that aircraft was descending. About this time; ZME went darc only with no notice; followed quickly by ZKC going darc only; also no notice. I found out; quite by accident; that our darc was disabled when giving a relief briefing 25 minutes later; and noticed I didn't have any data blocks when I switched over to darc. An inquiry to the supervisor revealed that he had not been given any heads up on the adjacent centers going darc only; and later when I got off the sector; he made it known that he was not aware that our darc had failed. I am not sure what was going on. I'm hoping it was an automation issue; but I can't be for sure. I'm fairly certain I handed the learjet off to okc-a. Either way; I should be more vigilant.

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Original NASA ASRS Text

Title: ZFW controller described a possible failed hand off when no notification was given with regard to an adjacent facility changing to DARC operations.

Narrative: A Learjet; heading to PWA was assigned 110 but read back 100. Pilot was corrected. Several minutes later; handed off to OKC-A; and switched. Later tried to drop data block; and noticed I had track control. I also noticed that aircraft was descending. About this time; ZME went DARC ONLY with no notice; followed quickly by ZKC going DARC ONLY; also no notice. I found out; quite by accident; that our DARC was disabled when giving a relief briefing 25 minutes later; and noticed I didn't have any data blocks when I switched over to DARC. An inquiry to the supervisor revealed that he had not been given any heads up on the adjacent centers going DARC only; and later when I got off the sector; he made it known that he was not aware that our DARC had failed. I am not sure what was going on. I'm hoping it was an automation issue; but I can't be for sure. I'm fairly certain I handed the Learjet off to OKC-A. Either way; I should be more vigilant.

Data retrieved from NASA's ASRS site as of April 2012 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.