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Airbus A320 flight crew flew the transition for the approach 1000 ft below the assigned altitude due to approach controller not correcting the flight crew's readback.
| Attributes | |
| ACN | 501750 |
| Time | |
| Date | 200102 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : hpn.airport |
| State Reference | NY |
| Altitude | msl bound lower : 3000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 14036 flight time type : 175 |
| ASRS Report | 501750 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
About 25 NM northeast of lga (destination), we checked in with new york approach control (134.9) 'level at 3000 ft.' controller asked us what we were doing at 3000 ft. My response was that the previous controller cleared us to 3000 ft. End of conversation. When we landed, I telephoned new york TRACON and questioned the situation. I was advised no conflict existed, it might have been a 'readback, hearback' problem between the controller and us. On the phone, I was told 4000 ft was our clearance altitude, but not to worry because their facility controled the airspace above 3000 ft.
Original NASA ASRS Text
Title: AIRBUS A320 FLC FLEW THE TRANSITION FOR THE APCH 1000 FT BELOW THE ASSIGNED ALT DUE TO APCH CTLR NOT CORRECTING THE FLC'S READBACK.
Narrative: ABOUT 25 NM NE OF LGA (DEST), WE CHKED IN WITH NEW YORK APCH CTL (134.9) 'LEVEL AT 3000 FT.' CTLR ASKED US WHAT WE WERE DOING AT 3000 FT. MY RESPONSE WAS THAT THE PREVIOUS CTLR CLRED US TO 3000 FT. END OF CONVERSATION. WHEN WE LANDED, I TELEPHONED NEW YORK TRACON AND QUESTIONED THE SIT. I WAS ADVISED NO CONFLICT EXISTED, IT MIGHT HAVE BEEN A 'READBACK, HEARBACK' PROB BTWN THE CTLR AND US. ON THE PHONE, I WAS TOLD 4000 FT WAS OUR CLRNC ALT, BUT NOT TO WORRY BECAUSE THEIR FACILITY CTLED THE AIRSPACE ABOVE 3000 FT.
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.