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A departure air carrier was inadvertently issued an altitude that conflicted with another air carrier resulting in less than standard separation.
| Attributes | |
| ACN | 142747 |
| Time | |
| Date | 199004 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : clt |
| State Reference | NC |
| Altitude | msl bound lower : 3000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : developmental |
| Experience | controller military : 8 controller radar : 1 |
| ASRS Report | 142759 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 4500 flight time type : 275 |
| ASRS Report | 142747 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
A departed air carrier mdt X was climbed to 4000'. Traffic was on the downwind at 4000' air carrier X should have been stopped at 3000' to ensure sep from air carrier Y on downwind at 4000'. The traffic got within 700' of each other before course divergence occurred. Cause: human error. Supplemental information from acn 142759: we departed clt on the way to flo with first officer at the controls. After takeoff clt tower instructed us to contact control. I made the call to departure, 'air carrier X out of 1700' for 3000'.' clt departure then instructed us to climb and maintain 4000'. Out of 3600' first officer called traffic at 12 O'clock. I looked and saw an air carrier mdt at 12 O'clock and what appeared to be level at 4000', which was our assigned altitude. I told clt that we had an air carrier at 12 O'clock. Clt departure then said that he thought we were level at 3000'. I told him that our last clearance was 4000', and that I had replied 4000'.
Original NASA ASRS Text
Title: A DEP ACR WAS INADVERTENTLY ISSUED AN ALT THAT CONFLICTED WITH ANOTHER ACR RESULTING IN LESS THAN STANDARD SEPARATION.
Narrative: A DEPARTED ACR MDT X WAS CLBED TO 4000'. TFC WAS ON THE DOWNWIND AT 4000' ACR X SHOULD HAVE BEEN STOPPED AT 3000' TO ENSURE SEP FROM ACR Y ON DOWNWIND AT 4000'. THE TFC GOT WITHIN 700' OF EACH OTHER BEFORE COURSE DIVERGENCE OCCURRED. CAUSE: HUMAN ERROR. SUPPLEMENTAL INFO FROM ACN 142759: WE DEPARTED CLT ON THE WAY TO FLO WITH F/O AT THE CONTROLS. AFTER TKOF CLT TWR INSTRUCTED US TO CONTACT CTL. I MADE THE CALL TO DEP, 'ACR X OUT OF 1700' FOR 3000'.' CLT DEP THEN INSTRUCTED US TO CLB AND MAINTAIN 4000'. OUT OF 3600' F/O CALLED TFC AT 12 O'CLOCK. I LOOKED AND SAW AN ACR MDT AT 12 O'CLOCK AND WHAT APPEARED TO BE LEVEL AT 4000', WHICH WAS OUR ASSIGNED ALT. I TOLD CLT THAT WE HAD AN ACR AT 12 O'CLOCK. CLT DEP THEN SAID THAT HE THOUGHT WE WERE LEVEL AT 3000'. I TOLD HIM THAT OUR LAST CLRNC WAS 4000', AND THAT I HAD REPLIED 4000'.
Data retrieved from NASA's ASRS site as of July 2007 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.