Narrative:

An embraer phenom 100 was inbound to ZZZ at 8;000 feet. I meant to descend him to 6;000 feet but I incorrectly issued 4;000 feet putting him in conflict with a ZZZ1 departure. Recommendation; work on hearback/readback clearances.

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Original NASA ASRS Text

Title: TRACON Controller issued a descent to 4;000; thinking he was issuing 6;000. Missed the read back and lost separation.

Narrative: An Embraer Phenom 100 was inbound to ZZZ at 8;000 feet. I meant to descend him to 6;000 feet but I incorrectly issued 4;000 feet putting him in conflict with a ZZZ1 departure. Recommendation; work on hearback/readback clearances.

Data retrieved from NASA's ASRS site as of July 2013 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.