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B747-400 captain reported encountering wake turbulence departing vhhh in trail of a B777.
| Attributes | |
| ACN | 1675528 |
| Time | |
| Date | 201908 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | VHHH.Airport |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
Rwy 25L hkg we encountered wake turbulence passing 800 feet on departure behind a B777. Approximate 30 degree bank left and loss of roughly 5 degrees of required climb pitch attitude with decreasing airspeed. We disconnected the autopilot; recovered from the upset; re-automated; re-established ourselves on the departure SID; and notified ATC of the wake turbulence upset. No issues with ATC were noted for being off track and we were still able to make the min 205 speed at prawn intersection.
Original NASA ASRS Text
Title: B747-400 Captain reported encountering wake turbulence departing VHHH in trail of a B777.
Narrative: Rwy 25L HKG we encountered wake turbulence passing 800 feet on departure behind a B777. Approximate 30 degree bank left and loss of roughly 5 degrees of required climb pitch attitude with decreasing airspeed. We disconnected the autopilot; recovered from the upset; re-automated; re-established ourselves on the departure SID; and notified ATC of the wake turbulence upset. No issues with ATC were noted for being off track and we were still able to make the min 205 speed at Prawn intersection.
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.