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Flight crew read back incorrect clearance altitude, not caught by ATC, climbs through assigned altitude.
| Attributes | |
| ACN | 112041 |
| Time | |
| Date | 198905 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zny |
| State Reference | NY |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 137 flight time total : 16565 flight time type : 1324 |
| ASRS Report | 112041 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 140 |
| ASRS Report | 112043 |
| Events | |
| Anomaly | altitude deviation : overshoot other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Operational Deviation Pilot Deviation |
Narrative:
Following departure from phl on an large transport aircraft, the first officer and I thought ZNY had cleared us to climb to 11000'. The first officer's readback to center was for us to climb to 11000'. At approximately 10600' center asked us to confirm our clearance to 10000'. We told him of our understanding and requested the altitude he would like us to maintain. He indicated 10000' and we descended to that altitude. He also indicated that there was 'no conflict' and everything was 'ok.' we do not remember the frequency, but it was the first contact with ZNY following departure control (toward ptw). Misunderstood the controller and evidently the same with him during readback.
Original NASA ASRS Text
Title: FLT CREW READ BACK INCORRECT CLRNC ALT, NOT CAUGHT BY ATC, CLIMBS THROUGH ASSIGNED ALT.
Narrative: FOLLOWING DEP FROM PHL ON AN LGT ACFT, THE F/O AND I THOUGHT ZNY HAD CLRED US TO CLB TO 11000'. THE F/O'S READBACK TO CENTER WAS FOR US TO CLB TO 11000'. AT APPROX 10600' CENTER ASKED US TO CONFIRM OUR CLRNC TO 10000'. WE TOLD HIM OF OUR UNDERSTANDING AND REQUESTED THE ALT HE WOULD LIKE US TO MAINTAIN. HE INDICATED 10000' AND WE DSNDED TO THAT ALT. HE ALSO INDICATED THAT THERE WAS 'NO CONFLICT' AND EVERYTHING WAS 'OK.' WE DO NOT REMEMBER THE FREQ, BUT IT WAS THE FIRST CONTACT WITH ZNY FOLLOWING DEP CTL (TOWARD PTW). MISUNDERSTOOD THE CTLR AND EVIDENTLY THE SAME WITH HIM DURING READBACK.
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.