AD NUMBER: 2004-07-22
MANUFACTURER: Boeing (CORRECTION)
SUBJECT: Airworthiness Directive 2004-07-22
SUMMARY: This amendment supersedes two existing
airworthiness directives (ADs), applicable to all Boeing Model 747
series airplanes, that currently require that the FAA-approved
maintenance inspection program be revised to include inspections
that will give no less than the required damage tolerance rating
for each structural significant item, and repair of cracked
structure. Those ADs were prompted by a structural re-evaluation
that identified additional structural elements where, if damage
were to occur, supplemental inspections may be required for timely
detection of fatigue cracking. This amendment requires additiona