Summary
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires modifying certain thrust reverser control system wiring to the flap control unit (FCU). This AD was prompted by a report of automatic retraction of the leading edge flaps due to indications transmitted to the FCU from the thrust reverser control system during takeoff. We are issuing this AD to prevent automatic retraction of the leading edge flaps during takeoff, which could result in reduced climb performance and consequent collision with terrain and obstacles or forced landing of the airplane.
Directive Details
AD Number
FAA-2010-0706
Document Number
2011-10692
Type
Rule
Publication Date
May 11, 2011
Effective Date
June 15, 2011
Affected Manufacturer
The Boeing Company Model 747-400, 747-400D, and 747-400F Series Airplanes Equipped With General Electric CF6-80C2 or Pratt & Whitney PW4000 Series
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2010-0706
Topics
Official Documents
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