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Distracted by a captain and relief pilot seat swap during a descent to FL140; the flight crew of a B777 failed to read and respond to an amendment to stop the descent at FL250.
| Attributes | |
| ACN | 835522 |
| Time | |
| Date | 200905 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | EGLL.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR OCK2F |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 110 Flight Crew Total 12000 Flight Crew Type 1300 |
| Person 2 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 20000 Flight Crew Type 3300 |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Clearance |
Narrative:
At FL330 I received a call from london center; 'flight abc; at pilot's discretion descend to 250 and be level at FL140 at bedek.' I replied; 'flight abc leaving FL330 now for FL140 to be level at bedek at FL140. I started down to FL140. The seat swap took place at this time between the relief pilot and the captain returning from his break. The relief pilot was in his seat at the time of this transaction and confirmed the descent to FL140. Passing FL235; we received a call from london center; 'flight abc; I wanted you to stop your descent at FL250'. The captain responded;' do you want us to stop our descent?' the controller responded; 'no; continue descent to FL140 come right 5 degrees.' we complied and were further instructed about 20-30 seconds later to come further right 5 degrees and proceed direct bedek. Flight continued as usual to landing at london heathrow.
Original NASA ASRS Text
Title: Distracted by a Captain and Relief Pilot seat swap during a descent to FL140; the flight crew of a B777 failed to read and respond to an amendment to stop the descent at FL250.
Narrative: At FL330 I received a call from London Center; 'Flight ABC; at pilot's discretion descend to 250 and be level at FL140 at BEDEK.' I replied; 'Flight ABC leaving FL330 now for FL140 to be level at BEDEK at FL140. I started down to FL140. The seat swap took place at this time between the Relief Pilot and the Captain returning from his break. The Relief Pilot was in his seat at the time of this transaction and confirmed the descent to FL140. Passing FL235; we received a call from London Center; 'Flight ABC; I wanted you to stop your descent at FL250'. The Captain responded;' Do you want us to stop our descent?' the Controller responded; 'No; continue descent to FL140 come right 5 degrees.' We complied and were further instructed about 20-30 seconds later to come further right 5 degrees and proceed direct BEDEK. Flight continued as usual to landing at London Heathrow.
Data retrieved from NASA's ASRS site as of April 2012 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.