AD NUMBER: 2005-03-01
MANUFACTURER: Boeing SUBJECT: Airworthiness Directive 2005-03-01 SUMMARY: This amendment adopts a new airworthiness
directive (AD), applicable to all Boeing Model 747 series
airplanes, that requires repetitive inspections of the nacelle
strut-to-wing attachment structure, and repetitive overhaul of the
diagonal brace and spring beam load paths, to maintain damage
tolerance requirements and ensure long-term structural integrity;
and follow-on and corrective actions if necessary.
This action is necessary to ensure the structural integrity of
the strut-to-wing load path and prevent separation of the strut and
engine from the airplane. This action is intended to address the
identified unsafe condition.