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Flight crew of a dassault falcon DA20, overshot climb altitude due to a misunderstanding of ATC clearance.
| Attributes | |
| ACN | 372620 |
| Time | |
| Date | 199706 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ugn |
| State Reference | IL |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air taxi |
| Make Model Name | Falcon 20FJF/20C/20D/20E/20F |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 6000 flight time type : 600 |
| ASRS Report | 372620 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On the morning of jun/xa/97 we departed in light transport from ugn to bjs. My copilot was flying on the left side. My copilot is also PIC qualified in DA20 aircraft. On climb out from 3000 ft we climbed to 5000 ft. I set 5000 in the control window and confirmed it with my copilot by stating climb to 5000 ft. We were level at 3000 ft and I thought that ATC stated, 'light transport climb and maintain 5000 ft.' after leveling at 5000 ft, our chicago departure controller asked us what altitude we were climbing to. I stated 5000 ft is what we were cleared to. The controller stated 4000 ft was the altitude we were cleared to and then stated 5000 ft. I expressed my concern to the controller and told him I was sorry and thought 5000 ft was the altitude. I believe that it is possible that the controller did state 4000 ft. However, my crew and I thought 5000 ft. If it is possible that the controller did state 4000 ft, I feel that due to our busy schedule on the initial climb phase, it is possible we may have set the wrong altitude in the control window. It was early in the morning and the crew may not have been as sharp as they should be. I thought that by confirming between the crew the altitude cleared to climb is a good procedure to flight altitude.
Original NASA ASRS Text
Title: FLC OF A DASSAULT FALCON DA20, OVERSHOT CLB ALT DUE TO A MISUNDERSTANDING OF ATC CLRNC.
Narrative: ON THE MORNING OF JUN/XA/97 WE DEPARTED IN LTT FROM UGN TO BJS. MY COPLT WAS FLYING ON THE L SIDE. MY COPLT IS ALSO PIC QUALIFIED IN DA20 ACFT. ON CLBOUT FROM 3000 FT WE CLBED TO 5000 FT. I SET 5000 IN THE CTL WINDOW AND CONFIRMED IT WITH MY COPLT BY STATING CLB TO 5000 FT. WE WERE LEVEL AT 3000 FT AND I THOUGHT THAT ATC STATED, 'LTT CLB AND MAINTAIN 5000 FT.' AFTER LEVELING AT 5000 FT, OUR CHICAGO DEP CTLR ASKED US WHAT ALT WE WERE CLBING TO. I STATED 5000 FT IS WHAT WE WERE CLRED TO. THE CTLR STATED 4000 FT WAS THE ALT WE WERE CLRED TO AND THEN STATED 5000 FT. I EXPRESSED MY CONCERN TO THE CTLR AND TOLD HIM I WAS SORRY AND THOUGHT 5000 FT WAS THE ALT. I BELIEVE THAT IT IS POSSIBLE THAT THE CTLR DID STATE 4000 FT. HOWEVER, MY CREW AND I THOUGHT 5000 FT. IF IT IS POSSIBLE THAT THE CTLR DID STATE 4000 FT, I FEEL THAT DUE TO OUR BUSY SCHEDULE ON THE INITIAL CLB PHASE, IT IS POSSIBLE WE MAY HAVE SET THE WRONG ALT IN THE CTL WINDOW. IT WAS EARLY IN THE MORNING AND THE CREW MAY NOT HAVE BEEN AS SHARP AS THEY SHOULD BE. I THOUGHT THAT BY CONFIRMING BTWN THE CREW THE ALT CLRED TO CLB IS A GOOD PROC TO FLT ALT.
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.