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Departure approach controller clears B727 to 10000 ft but missed readback as pilot states climbing to 11000 ft. B727 climb stopped on initial contact when xferred to ZOB, but comes in conflict with DH8 on overflt.
| Attributes | |
| ACN | 421997 |
| Time | |
| Date | 199811 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : roc |
| State Reference | NY |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 30 flight time total : 7010 flight time type : 1000 |
| ASRS Report | 421997 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 20800 vertical : 500 |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
We departed roc with clearance to 11000 ft. Leaving 10500 ft, center told us our clearance was only to 10000 ft, and to call ZOB, which we did. I was told at that time that there were 3 operrors on the part of center and departure control. I was told that I was only cleared to 10000 ft, but I always read back 11000 ft and 3 controllers never caught my readback as wrong. We came within 4 SM and 500 ft of the other aircraft that was going into roc.
Original NASA ASRS Text
Title: DEP APCH CTLR CLRS B727 TO 10000 FT BUT MISSED READBACK AS PLT STATES CLBING TO 11000 FT. B727 CLB STOPPED ON INITIAL CONTACT WHEN XFERRED TO ZOB, BUT COMES IN CONFLICT WITH DH8 ON OVERFLT.
Narrative: WE DEPARTED ROC WITH CLRNC TO 11000 FT. LEAVING 10500 FT, CTR TOLD US OUR CLRNC WAS ONLY TO 10000 FT, AND TO CALL ZOB, WHICH WE DID. I WAS TOLD AT THAT TIME THAT THERE WERE 3 OPERRORS ON THE PART OF CTR AND DEP CTL. I WAS TOLD THAT I WAS ONLY CLRED TO 10000 FT, BUT I ALWAYS READ BACK 11000 FT AND 3 CTLRS NEVER CAUGHT MY READBACK AS WRONG. WE CAME WITHIN 4 SM AND 500 FT OF THE OTHER ACFT THAT WAS GOING INTO ROC.
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.