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Small transport climbed above assigned altitude and conflicted with another aircraft resulting in less than standard separation.
| Attributes | |
| ACN | 132062 |
| Time | |
| Date | 198912 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : tpa |
| State Reference | FL |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa tower : atl |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 10 controller radar : 18 |
| ASRS Report | 132062 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 0 vertical : 900 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working the west low and west high combined radar position at tpa TRACON. An aircraft departed clw requesting an IFR clearance to crg airport. I tagged the aircraft and issued his clearance to maintain 8000'. I was working approximately 7 other aircraft, apches to pie and jet arrs to tpa. Air carrier X, a jet arrival to tpa from the northwest, was descended to 9000' to stay above the IFR aircraft to crg. My attention was diverted to change the airport information because of a runway change at pie when I went to call traffic between the 2 aircraft and noticed the small transport at 8900'. I then asked his altitude. He reported 9000'. He was descended to go under air carrier X. Upon listening to the tape the aircraft had read back his clearance to climb and maintain 9000'. I did not remember hearing this. I was decertified and given a systems error.
Original NASA ASRS Text
Title: SMT CLIMBED ABOVE ASSIGNED ALT AND CONFLICTED WITH ANOTHER ACFT RESULTING IN LESS THAN STANDARD SEPARATION.
Narrative: I WAS WORKING THE W LOW AND W HIGH COMBINED RADAR POSITION AT TPA TRACON. AN ACFT DEPARTED CLW REQUESTING AN IFR CLRNC TO CRG ARPT. I TAGGED THE ACFT AND ISSUED HIS CLRNC TO MAINTAIN 8000'. I WAS WORKING APPROX 7 OTHER ACFT, APCHES TO PIE AND JET ARRS TO TPA. ACR X, A JET ARR TO TPA FROM THE NW, WAS DESCENDED TO 9000' TO STAY ABOVE THE IFR ACFT TO CRG. MY ATTN WAS DIVERTED TO CHANGE THE ARPT INFO BECAUSE OF A RWY CHANGE AT PIE WHEN I WENT TO CALL TFC BETWEEN THE 2 ACFT AND NOTICED THE SMT AT 8900'. I THEN ASKED HIS ALT. HE REPORTED 9000'. HE WAS DESCENDED TO GO UNDER ACR X. UPON LISTENING TO THE TAPE THE ACFT HAD READ BACK HIS CLRNC TO CLIMB AND MAINTAIN 9000'. I DID NOT REMEMBER HEARING THIS. I WAS DECERTIFIED AND GIVEN A SYSTEMS ERROR.
Data retrieved from NASA's ASRS site as of August 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.