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B-24 Page 2 of 2 D6-27370-866-EGP
Flight Crew Operations Manual Bulletin No. EGP-24 , Dated March 26, 2010 (continued)
Boeing recommends that operators aggressively investigate, identify, and correct
the cause of the vibration prior to returning the airplane to revenue service. If
exposed to recurrent or chronic vibration, control surfaces can experience
significant structural damage.
Operating Instructions
If vibration is suspected due to the elevator tab, reduce airspeed smoothly until
the vibration stops, using the thrust levers and pitch attitude. Do not use speed
brakes or change airplane configuration to reduce airspeed. Do not reduce
airspeed below the minimum speed for the existing flap setting and gross weight.
Consider landing at the nearest suitable airport.
Stay at or below the reduced airspeed at which the vibration stopped for the rest
of the flight. Limit bank angle to 15° until below 20,000 feet.
Do not deploy the speedbrakes for the remainder of the flight.
Flaps and landing gear can be extended normally during the approach and
landing. The speedbrake can be armed for landing.
The vibration occurrence should be reported to maintenance for resolution before
further flight. The logbook entry should emphasize that the vibration is suspected
to be in the area of the elevator tab and tab control system.
Administrative Information
Insert this bulletin behind the Bulletin Record page in Volume 1 of your Flight
Crew Operations Manual (FCOM). Amend the FCOM Bulletin Record page to
show bulletin EGP-24 "In Effect" (IE).
Please send all correspondence regarding Flight Crew Operations Manual
Bulletin status, to the 737 Manager, Flight Technical Data, through the Service
Requests Application (SR App) on the MyBoeingFleet home page.
September 24, 2015