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B777 first officer reported a stick shaker activation and loss of altitude.
| Attributes | |
| ACN | 1561388 |
| Time | |
| Date | 201807 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying Relief Pilot First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 12862 Flight Crew Type 982 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Deviation - Speed All Types Inflight Event / Encounter Weather / Turbulence |
Narrative:
The first officer was the pilot flying; and was relatively new to the airplane. During climb on the departure; ATC assigned a heading of 090 degrees for weather. At acceleration altitude; the captain selected speed intervene and 265 knots as a buffer above minimum clean maneuvering speed. During the climb; many altitude assignments were received and complied with. Passing approximately 15000 feet; I noticed the MCP was still in speed intervene; and I mentioned it to the first officer; as there was a lot of difficult ATC communications happening. Approaching several cells; the aircraft encountered heavy moderate turbulence; and since the speed was close to the minimum; the stick shaker activated. The first officer called out to lower the nose and increase power [and] made a public address to the flight attendants to be seated immediately. Concurrently; the captain took control of the aircraft and initiated the stall recovery profile. I believe we lost around 2000 feet. The aircraft was recovered and resumed a normal climb and the flight attendants were asked to check in. [There were] no injuries.
Original NASA ASRS Text
Title: B777 First Officer reported a stick shaker activation and loss of altitude.
Narrative: The First Officer was the Pilot Flying; and was relatively new to the airplane. During climb on the departure; ATC assigned a heading of 090 degrees for weather. At acceleration altitude; the Captain selected Speed Intervene and 265 knots as a buffer above minimum clean maneuvering speed. During the climb; many altitude assignments were received and complied with. Passing approximately 15000 feet; I noticed the MCP was still in Speed Intervene; and I mentioned it to the First Officer; as there was a lot of difficult ATC communications happening. Approaching several cells; the aircraft encountered heavy moderate turbulence; and since the speed was close to the minimum; the stick shaker activated. The First Officer called out to lower the nose and increase power [and] made a public address to the flight attendants to be seated immediately. Concurrently; the Captain took control of the aircraft and initiated the stall recovery profile. I believe we lost around 2000 feet. The aircraft was recovered and resumed a normal climb and the flight attendants were asked to check in. [There were] no injuries.
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.