 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737-800 flight crew reported a track deviation occurred when they misinterpreted their clearance received via cpdlc.
| Attributes | |
| ACN | 1386373 |
| Time | |
| Date | 201609 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAS.Airport |
| State Reference | NV |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Route In Use | SID TRALR7 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
Originally cleared to depart las on the staav 6 RNAV SID; dispatch release amended to depart via the tralr 6 SID; loaded it into the FMC as the dispatch release. Then after several attempts to acquire our controller pilot data link communication (clpdc) we received it and it stated cleared as filed; but as one went to the next page it stated the amended route to the original staav 6 SID. Both the first officer (first officer) and I failed to catch this change and flew the tralr 6 SID. ATC questioned our departure upon contact with departure control.the differences between clpdc and pre-departure clearnace with some aircraft and locations having these procedures can be confusing. The terminology is inconsistent and can be interpreted different ways. Just contact ATC clearance delivery with any questions.
Original NASA ASRS Text
Title: B737-800 flight crew reported a track deviation occurred when they misinterpreted their clearance received via CPDLC.
Narrative: Originally cleared to depart LAS on the STAAV 6 RNAV SID; Dispatch Release amended to depart via the TRALR 6 SID; loaded it into the FMC as the Dispatch Release. Then after several attempts to acquire our Controller Pilot Data Link Communication (CLPDC) we received it and it stated cleared as filed; but as one went to the next page it stated the amended route to the original STAAV 6 SID. Both the First Officer (FO) and I failed to catch this change and flew the TRALR 6 SID. ATC questioned our departure upon contact with Departure Control.The differences between CLPDC and pre-departure clearnace with some aircraft and locations having these procedures can be confusing. The terminology is inconsistent and can be interpreted different ways. Just contact ATC Clearance Delivery with ANY questions.
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.