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Clearance not acknowledged until air carrier was above intended altitude. Frequency congestion was an issue.
| Attributes | |
| ACN | 481085 |
| Time | |
| Date | 200007 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : teb.airport |
| State Reference | NJ |
| Altitude | msl bound lower : 4000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | HS 125 Series 700 |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure sid : teb 4 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 6200 flight time type : 280 |
| ASRS Report | 481085 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 135 flight time total : 20000 flight time type : 260 |
| ASRS Report | 480841 |
| Events | |
| Anomaly | altitude deviation : overshoot other anomaly other |
| Independent Detector | other controllerb |
| Resolutory Action | controller : issued advisory controller : issued new clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance ATC Facility |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Departing teb on jul/xa/00 at approximately XA15, we were cleared to depart runway 1 and fly the teb 4 departure. Shortly after takeoff and entering IMC, we checked in with new york departure control. We were given a climb, heading change, and altitude change and asked to squawk a new code. The frequency was very busy, our readback was not acknowledged until the third try. By this time we were climbing through 6800 ft. At this time the controller told us we were only cleared to 4000 ft, we had been trying to read back 'climb to 8000 ft turn left to 280 degrees' and the new transponder code. We leveled off at 7000 ft. I believe that because of frequency congestion and our inability to receive a confirmation that we had the correct information, were the causes of this incident.
Original NASA ASRS Text
Title: CLRNC NOT ACKNOWLEDGED UNTIL ACR WAS ABOVE INTENDED ALT. FREQ CONGESTION WAS AN ISSUE.
Narrative: DEPARTING TEB ON JUL/XA/00 AT APPROX XA15, WE WERE CLRED TO DEPART RWY 1 AND FLY THE TEB 4 DEP. SHORTLY AFTER TKOF AND ENTERING IMC, WE CHKED IN WITH NEW YORK DEP CTL. WE WERE GIVEN A CLB, HDG CHANGE, AND ALT CHANGE AND ASKED TO SQUAWK A NEW CODE. THE FREQ WAS VERY BUSY, OUR READBACK WAS NOT ACKNOWLEDGED UNTIL THE THIRD TRY. BY THIS TIME WE WERE CLBING THROUGH 6800 FT. AT THIS TIME THE CTLR TOLD US WE WERE ONLY CLRED TO 4000 FT, WE HAD BEEN TRYING TO READ BACK 'CLB TO 8000 FT TURN L TO 280 DEGS' AND THE NEW XPONDER CODE. WE LEVELED OFF AT 7000 FT. I BELIEVE THAT BECAUSE OF FREQ CONGESTION AND OUR INABILITY TO RECEIVE A CONFIRMATION THAT WE HAD THE CORRECT INFO, WERE THE CAUSES OF THIS INCIDENT.
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.