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B747-400 flight crew report ATC intervention to prevent gross navigation error due to missing the second portion of revised cpdlc while enroute.
| Attributes | |
| ACN | 1663375 |
| Time | |
| Date | 201907 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer Pilot Flying Relief Pilot |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
I was in the bunk for rest at the time of the event. What I was told [was that] they got an altitude and route clearance cpdlc message but only did the altitude change ; they did not see the route change part in the message and the load prompt did not populate. They received an HF message that ATC intervention to prevent gross navigational era. Not sure if they got new route via HF before or after ATC intervention message. I did view the cpdlc message the load message took quite a while to populate ; one had to stay on that page for a while and wait; very easy to miss or move to another page before it pops up. I would suggest a single clearance at a time via cpdlc not an altitude and change at the same time.
Original NASA ASRS Text
Title: B747-400 flight crew report ATC intervention to prevent gross navigation error due to missing the second portion of revised CPDLC while enroute.
Narrative: I was in the bunk for rest at the time of the event. What I was told [was that] they got an altitude and route clearance CPDLC message but only did the altitude change ; they did not see the route change part in the message and the load prompt did not populate. They received an HF message that ATC intervention to prevent gross navigational era. Not sure if they got new route via HF before or after ATC intervention message. I did view the CPDLC message the load message took quite a while to populate ; one had to stay on that page for a while and wait; very easy to miss or move to another page before it pops up. I would suggest a single clearance at a time via CPDLC not an altitude and change at the same time.
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.