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Altitude deviation and potential conflict when the first officer, PF, of a B757 plans on leaving his assigned altitude thinking he had clearance for a visual approach into srq, fl.
| Attributes | |
| ACN | 544871 |
| Time | |
| Date | 200204 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : srq.airport |
| State Reference | FL |
| Altitude | msl bound lower : 2750 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : tpa.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : initial |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 9000 flight time type : 900 |
| ASRS Report | 544871 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : overshoot conflict : airborne critical non adherence : clearance non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas other controllera |
| Resolutory Action | flight crew : became reoriented flight crew : returned to assigned altitude flight crew : took precautionary avoidance action |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance Aircraft Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were on a downwind descending to 3000 ft, vector for runway 32 at srq. Our clearance was, 'heading 160 degrees and 3000 ft.' approach asked if we had the airport in sight. We said yes. He said 'set yourself up for a downwind to runway 32. There is traffic departing to the northeast, I'll call him out to you.' I thought he had cleared us for the visual, so I turned toward the airport and set 1600 ft in the altitude window for downwind. Approaching 3000 ft, I became concerned that maybe he hadn't actually cleared us for the visual, so I hit altitude hold approaching 3000 ft. We descended slightly through 3000 ft, maybe 2750 ft. At the same time we got an RA to pull up, so I did. The rest of the flight was uneventful. My belief is that non standard terminology from approach control led me to my mistake in thinking we were cleared for a visual approach to runway 32.
Original NASA ASRS Text
Title: ALTDEV AND POTENTIAL CONFLICT WHEN THE FO, PF, OF A B757 PLANS ON LEAVING HIS ASSIGNED ALT THINKING HE HAD CLRNC FOR A VISUAL APCH INTO SRQ, FL.
Narrative: WE WERE ON A DOWNWIND DSNDING TO 3000 FT, VECTOR FOR RWY 32 AT SRQ. OUR CLRNC WAS, 'HEADING 160 DEGS AND 3000 FT.' APCH ASKED IF WE HAD THE ARPT IN SIGHT. WE SAID YES. HE SAID 'SET YOURSELF UP FOR A DOWNWIND TO RWY 32. THERE IS TFC DEPARTING TO THE NE, I'LL CALL HIM OUT TO YOU.' I THOUGHT HE HAD CLRED US FOR THE VISUAL, SO I TURNED TOWARD THE ARPT AND SET 1600 FT IN THE ALT WINDOW FOR DOWNWIND. APCHING 3000 FT, I BECAME CONCERNED THAT MAYBE HE HADN'T ACTUALLY CLRED US FOR THE VISUAL, SO I HIT ALT HOLD APCHING 3000 FT. WE DSNDED SLIGHTLY THROUGH 3000 FT, MAYBE 2750 FT. AT THE SAME TIME WE GOT AN RA TO PULL UP, SO I DID. THE REST OF THE FLT WAS UNEVENTFUL. MY BELIEF IS THAT NON STANDARD TERMINOLOGY FROM APCH CTL LED ME TO MY MISTAKE IN THINKING WE WERE CLRED FOR A VISUAL APCH TO RWY 32.
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.