[Correction] Flight Controls - Elevators, Rudder, and Rudder Tab - Inspections and Lubrication
- Published
- Effective
- Deadline
- Replaces
- 2015-12-03
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Boeing 777 models must comply with the corrected freeplay inspection limits and incorporate the revised service information into their maintenance programs. They should verify that inspections and lubrication procedures follow Boeing Special Attention Service Bulletin 777-27-0062 Revision 4, dated July 15, 2021, and apply credit for prior actions as specified. Compliance with this AD correction is effective as of October 12, 2022.
Summary
The Correction to Airworthiness Directive 2022-14-05 issued by the Federal Aviation Administration (FAA) addresses inspection and lubrication requirements for flight controls including elevators, rudder, and rudder tab on all Boeing 777-200, -200LR, -300, -300ER series airplanes, and certain 777F models. This correction fixes an incorrect freeplay indicator value and adds omitted credit for certain service information related to these inspections and maintenance procedures.
What changed
The correction updates the elevator freeplay dial indicator limit from an incorrect value to the correct measurement of 0.34 inches (8.636 mm) or less. It also reinstates credit for actions performed using Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, and its Revision 1, which were previously omitted. No other changes to the original AD 2022-14-05 requirements were made.
Why it matters
This correction ensures that operators and maintenance personnel use the correct freeplay limit to accurately detect excessive wear in flight control components, preventing potential control surface flutter and loss of airplane control. It also clarifies credit for prior compliance actions, helping avoid redundant work and ensuring proper maintenance program updates. Accurate compliance with this AD is critical for flight safety and regulatory adherence.
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