Narrative:

On initial climb off runway 01 at act; cleared runway heading to 3000'. Cleared then to climb to 5000' and turn to an assigned heading; which I don't remember. Before leveling at 5000' I saw TCAS traffic (yellow) showing +300'. Started looking about same time we leveled off at 5000'. Called aircraft to pilot flying (on autopilot). He looked and about that time it turned red with instructions to dive. He continued on several more seconds; then I demanded that he do something. As I was about to take over; he turned off a/P and dove. As we cleared the conflict; the TCAS showed 200'. After clearing and correcting altitude; I quizzed the controller about whether he was talking to the other aircraft. He said he was; but that aircraft was at 5500'. No way. I told him that we showed 200' as we passed under it. The pressure was extremely high today; 30.40 when we took off. I checked and we had it set correctly on all three altimeters. I have no way of knowing what the VFR traffic had set. I am not sure whether we were talking to waco approach or ft. Worth center.

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Original NASA ASRS Text

Title: C560XL FO reported a NMAC with another aircraft in the vicinity of ACT airport.

Narrative: On initial climb off runway 01 at ACT; cleared runway heading to 3000'. Cleared then to climb to 5000' and turn to an assigned heading; which I don't remember. Before leveling at 5000' I saw TCAS traffic (yellow) showing +300'. Started looking about same time we leveled off at 5000'. Called aircraft to pilot flying (on autopilot). He looked and about that time it turned red with instructions to dive. He continued on several more seconds; then I demanded that he do something. As I was about to take over; he turned off A/P and dove. As we cleared the conflict; the TCAS showed 200'. After clearing and correcting altitude; I quizzed the controller about whether he was talking to the other aircraft. He said he was; but that aircraft was at 5500'. No way. I told him that we showed 200' as we passed under it. The pressure was extremely high today; 30.40 when we took off. I checked and we had it set correctly on all three altimeters. I have no way of knowing what the VFR traffic had set. I am not sure whether we were talking to Waco Approach or Ft. Worth Center.

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.