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A LR60 flight crew continued through the radial that they were assigned to intercept while flying a SID transition. The flight crew misunderstood what the actual assigned transition was, and altered their heading to intercept what they believed to be the assigned transition.
| Attributes | |
| ACN | 340990 |
| Time | |
| Date | 199607 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : clt |
| State Reference | NC |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt tower : rno |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 10500 flight time type : 8000 |
| ASRS Report | 340990 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
When we received our clearance the required readback consisted only of our number and transponder code. After departure the controller gave us a few heading changes and then a heading to intercept the transition. If he changed the transition from the panther 3-MERIL transition (filed and cleared) to the panther 3-LILLS transition, we did not either hear or comprehend (we had a mindset for the panther 3-MERIL). When we realized that what we thought was the assigned heading would not intercept the meril transition we assumed the heading he wanted was 45 degrees rather than a 45 degree intercept. We should have questioned departure when we realized our heading would not intercept the meril transition.
Original NASA ASRS Text
Title: A LR60 FLC CONTINUED THROUGH THE RADIAL THAT THEY WERE ASSIGNED TO INTERCEPT WHILE FLYING A SID TRANSITION. THE FLC MISUNDERSTOOD WHAT THE ACTUAL ASSIGNED TRANSITION WAS, AND ALTERED THEIR HDG TO INTERCEPT WHAT THEY BELIEVED TO BE THE ASSIGNED TRANSITION.
Narrative: WHEN WE RECEIVED OUR CLRNC THE REQUIRED READBACK CONSISTED ONLY OF OUR NUMBER AND XPONDER CODE. AFTER DEP THE CTLR GAVE US A FEW HDG CHANGES AND THEN A HDG TO INTERCEPT THE TRANSITION. IF HE CHANGED THE TRANSITION FROM THE PANTHER 3-MERIL TRANSITION (FILED AND CLRED) TO THE PANTHER 3-LILLS TRANSITION, WE DID NOT EITHER HEAR OR COMPREHEND (WE HAD A MINDSET FOR THE PANTHER 3-MERIL). WHEN WE REALIZED THAT WHAT WE THOUGHT WAS THE ASSIGNED HDG WOULD NOT INTERCEPT THE MERIL TRANSITION WE ASSUMED THE HDG HE WANTED WAS 45 DEGS RATHER THAN A 45 DEG INTERCEPT. WE SHOULD HAVE QUESTIONED DEP WHEN WE REALIZED OUR HDG WOULD NOT INTERCEPT THE MERIL TRANSITION.
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.