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ZAB controller described a loss of separation event when neglecting to properly scan the data block altitude information before assigning another altitude.
| Attributes | |
| ACN | 1027385 |
| Time | |
| Date | 201208 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZAB.ARTCC |
| State Reference | NM |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict |
Narrative:
An A320 was at FL320 requesting FL360 because they were getting a choppy ride. I told him that I had his request; there was and aircraft at FL340 flying right over the top of him. Once he cleared the FL340 traffic I climbed him to FL360. Before I climbed the A320 I did a quick traffic scan thinking in the back of my head he was at FL340. Thinking that he was at FL340 rather than FL320 I did not see any traffic for him and climbed him. There was an air carrier southbound at FL330 missed the traffic because I thought the A320 was at FL340. I turned both aircraft 30 right; one second later; both were responding to a RA. Double check the altitude of the aircraft requesting higher and note the data block.
Original NASA ASRS Text
Title: ZAB Controller described a loss of separation event when neglecting to properly scan the Data Block altitude information before assigning another altitude.
Narrative: An A320 was at FL320 requesting FL360 because they were getting a choppy ride. I told him that I had his request; there was and aircraft at FL340 flying right over the top of him. Once he cleared the FL340 traffic I climbed him to FL360. Before I climbed the A320 I did a quick traffic scan thinking in the back of my head he was at FL340. Thinking that he was at FL340 rather than FL320 I did not see any traffic for him and climbed him. There was an Air Carrier southbound at FL330 missed the traffic because I thought the A320 was at FL340. I turned both aircraft 30 right; one second later; both were responding to a RA. Double check the altitude of the aircraft requesting higher and note the Data Block.
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.