Md-11 flight crew reported encountering wake turbulence on departure from omdb in trail of a B777 th...

Attributes
ACN	1199563
Time
Date	201408
Local Time Of Day	1201-1800
Place
Locale Reference	OMDB.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Climb
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Speed All Types Inflight Event / Encounter Wake Vortex Encounter

Narrative:

Momentary stick shaker occurred on departure. We were heavy; 612k; and used max power to obtain a stop margin of 190 ft. Our takeoff sequence put us in trail of a heavy B-777 by about 5 miles. Shortly after takeoff; we encountered wake turbulence that rolled the aircraft right and left about 15 degrees; but was manageable. After accelerating; and cleaning up on schedule; with clean configuration; well above [slat retraction] speed; but not yet to [clean maneuvering speed]; we encountered wake turbulence again; this time a bit more severe; the aircraft rolling right to a bank of about 25 degrees. As advertised; when passing the bank limiter; stick shaker occurred momentarily. I unloaded the aircraft slightly; continued to accelerate; and rolled the aircraft back to level flight. The remainder of the flight was uneventful. Cause: departure control sequenced us too close in trail to previous heavy jet departure.

Original NASA ASRS Text

Title: MD-11 flight crew reported encountering wake turbulence on departure from OMDB in trail of a B777 that resulted in a momentary stick shaker.

Narrative: Momentary stick shaker occurred on departure. We were heavy; 612k; and used max power to obtain a stop margin of 190 FT. Our takeoff sequence put us in trail of a heavy B-777 by about 5 miles. Shortly after takeoff; we encountered wake turbulence that rolled the aircraft right and left about 15 degrees; but was manageable. After accelerating; and cleaning up on schedule; with clean configuration; well above [slat retraction] speed; but not yet to [clean maneuvering speed]; we encountered wake turbulence again; this time a bit more severe; the aircraft rolling right to a bank of about 25 degrees. As advertised; when passing the bank limiter; stick shaker occurred momentarily. I unloaded the aircraft slightly; continued to accelerate; and rolled the aircraft back to level flight. The remainder of the flight was uneventful. Cause: Departure Control sequenced us too close in trail to previous heavy jet departure.

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.

Md-11 flight crew reported encountering wake turbulence on departure from omdb in trail of a B777 that resulted in a momentary stick shaker.