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System error occurs when ATC attempts an expedited climb for an A319 through an altitude occupied by another aircraft 5 mi west of bwz, nj.
| Attributes | |
| ACN | 553449 |
| Time | |
| Date | 200207 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| State Reference | NJ |
| Altitude | msl bound lower : 13700 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 215 flight time total : 17000 flight time type : 4500 |
| ASRS Report | 553449 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Miss Distance | horizontal : 15000 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance Aircraft Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Departure controller issued us an expedited climb out of about 11500 ft through 15000 ft to maintain 17000 ft. He changed his mind as we were about to climb through 13000 ft at a high rate (2500-3000 FPM), and told us to maintain 13000 ft. We advised him we would be going above 13000 ft but would descend back down. We reached 13700 ft, saw the TCASII target at 1 O'clock position and 2 1/2 - 3 mi, and descended down aggressively as TA/RA 'descend' command activated. ATC should train controllers to be conservative with traffic conflicts and realize an aircraft of the size and type such as an A319 (320 or other large air carrier aircraft) cannot change from expedited climb to maintain altitude without some significant lead time.
Original NASA ASRS Text
Title: SYS ERROR OCCURS WHEN ATC ATTEMPTS AN EXPEDITED CLB FOR AN A319 THROUGH AN ALT OCCUPIED BY ANOTHER ACFT 5 MI W OF BWZ, NJ.
Narrative: DEP CTLR ISSUED US AN EXPEDITED CLB OUT OF ABOUT 11500 FT THROUGH 15000 FT TO MAINTAIN 17000 FT. HE CHANGED HIS MIND AS WE WERE ABOUT TO CLB THROUGH 13000 FT AT A HIGH RATE (2500-3000 FPM), AND TOLD US TO MAINTAIN 13000 FT. WE ADVISED HIM WE WOULD BE GOING ABOVE 13000 FT BUT WOULD DSND BACK DOWN. WE REACHED 13700 FT, SAW THE TCASII TARGET AT 1 O'CLOCK POS AND 2 1/2 - 3 MI, AND DSNDED DOWN AGGRESSIVELY AS TA/RA 'DSND' COMMAND ACTIVATED. ATC SHOULD TRAIN CTLRS TO BE CONSERVATIVE WITH TFC CONFLICTS AND REALIZE AN ACFT OF THE SIZE AND TYPE SUCH AS AN A319 (320 OR OTHER LARGE ACR ACFT) CANNOT CHANGE FROM EXPEDITED CLB TO MAINTAIN ALT WITHOUT SOME SIGNIFICANT LEAD TIME.
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.