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Air carrier captain reports misunderstanding a pre departure clearance symbol; thinking that '//' means direct when it actually means the rest of the route as filed. This leads to a track deviation which is corrected by ATC.
| Attributes | |
| ACN | 1259993 |
| Time | |
| Date | 201504 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
I was under the impression that the pre departure clearance stated ZZZ [our destination airport] after sewto. I now know that the '//' symbol represents the rest of the route as filed. Upon receiving the pre departure clearance in ord the first officer and I reviewed it. It stated a slight reroute. 'ORD8-moble-adime-sewto://ZZZ. We both understood that after sewto we were supposed to proceed direct to ZZZ. In flight at FL210 we passed sewto; ATC inquired about our routing stating that we should be flying the route 'sewto-fwa-rod-ZZZ' which is what we were filed for. After I told the controller that we had some confusion on the pre departure clearance he then cleared us to 'rod-ZZZ.' the flight continued without incident.when coming across symbolism on the pre departure clearance that I do not see often I am going to give clearance delivery a call and verify our routing and clear any confusion.
Original NASA ASRS Text
Title: Air Carrier Captain reports misunderstanding a PDC symbol; thinking that '//' means direct when it actually means the rest of the route as filed. This leads to a track deviation which is corrected by ATC.
Narrative: I was under the impression that the PDC stated ZZZ [our Destination airport] after SEWTO. I now know that the '//' symbol represents the rest of the route as filed. Upon receiving the PDC in ORD the First Officer and I reviewed it. It stated a slight reroute. 'ORD8-MOBLE-ADIME-SEWTO://ZZZ. We both understood that after SEWTO we were supposed to proceed direct to ZZZ. In flight at FL210 we passed SEWTO; ATC inquired about our routing stating that we should be flying the route 'SEWTO-FWA-ROD-ZZZ' which is what we were filed for. After I told the controller that we had some confusion on the PDC he then cleared us to 'ROD-ZZZ.' The flight continued without incident.When coming across symbolism on the PDC that I do not see often I am going to give Clearance Delivery a call and verify our routing and clear any confusion.
Data retrieved from NASA's ASRS site 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.