A compliance engineering solution for an Eastern European operator's Boeing 747-400SF, resolving an unapproved insulation material found during a major cargo door repair validation.
During a major repair validation of a Boeing 747-400SF main cargo door, Pt21 Solutions identified an unapproved insulation material. Our team designed a concurrent minor modification restoring the door to its original, OEM-approved specification.
The solution is fully compliant with EASA CS-25, restoring airworthiness without materially affecting aircraft weight, structural integrity or the operational schedule.
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