Airworthiness Directive · Amendment 39-19237 · Landing gear
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 747-8 series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 747-32A2525 RB, dated September 6, 2017, except for airplanes having line numbers 1443, 1451, 1453, 1456, 1470, 1472, 1475, 1477, 1480, 1492, 1494, 1497, 1498, 1500, 1503, 1511, 1512, 1513, and 1514.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-8 series airplanes. This AD was prompted by a report of restricted movement of the right brake pedals after landing rollout. This AD requires revising the airplane flight manual (AFM) by adding an autobrake system limitation. This AD also requires modifying intercostal webs near a main entry door, which terminates the AFM limitation. We are issuing this AD to address the unsafe condition on these products.
Within 120 days after the effective date of this AD: Revise the airplane flight manual (AFM) by incorporating the limitation specified in figure 1 to paragraph (g) of this AD.
Within 60 months after the effective date of this AD, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 747-32A2525 RB, dated September 6, 2017, except where the requirements bulletin specifies applying sealant, the following type of sealant must be used: BMS 5-142, TYPE 2; BMS 5-95; PR-1826; or PR-1828. Doing the actions specified in this paragraph terminates the AFM limitation revision required by paragraph (g) of this AD. The AFM limitation required by paragraph (g) of this AD may be removed from the AFM after accomplishing the actions specified in this paragraph.
Note 1 to paragraph (h) of this AD: Guidance for accomplishing the actions required by paragraph (h) of this AD can be found in Boeing Alert Service Bulletin 747-32A2525, dated September 6, 2017, which is referred to in Boeing Alert Requirements Bulletin 747-32A2525 RB, dated September 6, 2017.
