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B777-200 flight crew reported overshooting an altitude restriction departing lax on the GARDY3 SID; citing weather and a wake turbulence encounter as contributing.
| Attributes | |
| ACN | 1608824 |
| Time | |
| Date | 201901 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | SID GARDY3 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B777-300 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Speed All Types Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Weather / Turbulence |
Narrative:
Departed 6R lax for the GARDY3 departure. Before takeoff we advised ground that it was questionable if we could comply with the 8;000 ft restriction at traap. We again advised lax departure of being [unable] to reach traap by 8;000 ft and they told us to do the best we could. The FMC placed us just past traap at 8;000 ft. On departure we had moderate turbulence in the climb; a heavy aircraft with restricted performance and possible wake turbulence from the B777-300 that departed before us. Approaching traap with climb decreasing to 300 feet per minute with degrading airspeed; then followed by a strong uplift with 2000+ rate of climb. We passed traap above the 8;000 ft restriction. Heavy aircraft with decreased performance. Moderate turbulence with associated weather. Wake turbulence from aircraft in front of us.
Original NASA ASRS Text
Title: B777-200 flight crew reported overshooting an altitude restriction departing LAX on the GARDY3 SID; citing weather and a wake turbulence encounter as contributing.
Narrative: Departed 6R LAX for the GARDY3 Departure. Before takeoff we advised Ground that it was questionable if we could comply with the 8;000 FT restriction at TRAAP. We again advised LAX Departure of being [unable] to reach TRAAP by 8;000 FT and they told us to do the best we could. The FMC placed us just past TRAAP at 8;000 FT. On departure we had moderate turbulence in the climb; a heavy aircraft with restricted performance and possible wake turbulence from the B777-300 that departed before us. Approaching TRAAP with climb decreasing to 300 feet per minute with degrading airspeed; then followed by a strong uplift with 2000+ rate of climb. We passed TRAAP above the 8;000 FT restriction. Heavy aircraft with decreased performance. Moderate turbulence with associated weather. Wake turbulence from aircraft in front of us.
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.