Airworthiness Directive · Amendment 39-23029 · Stabilizers
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, -8, -8F, 747SR, and 747SP series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 747 airplanes. This AD was prompted by a report that a right-hand outboard elevator was received and installed without balance weights. This AD requires doing a maintenance records check to determine if certain outboard elevators are installed or an inspection to determine if outboard elevators have balance weights, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified by paragraph (h) of this AD: At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025. For airplanes not identified in Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025, do the actions for Group 1 airplanes specified in Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025.
(1) Where the “Boeing Recommended Compliance Time” columns of the tables in the “Compliance” paragraph of Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025, refer to “the Original Issue date of this safety advisory,” this AD requires using the effective date of this AD.
(2) Where Boeing Alert Safety Advisory 747-BSA-55-001, dated April 24, 2025, specifies contacting Boeing for corrective action instructions: This AD requires doing the instructions using a method approved in accordance with the procedures specified in paragraph (j) of this AD.
