Gulfstream III (G1159A)
Communication Breakdown; Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
General Maintenance Action
Procedure; Logbook Entry; Incorrect / Not Installed / Unavailable Part; Aircraft; Company Policy; Human Factors
Gulfstream 1159A aircraft was operated in March 2012 with a Major Unapproved Alteration reportedly with local Federal Agency knowledge. Said Major Unapproved Alteration is a large cutout in the pressure vessel lower skin. The Major Unapproved Alteration was not deemed structurally acceptable by the Designated Engineering Representative (DER).Upon submission for approval via [FAA] Form 8110-3; the existing alteration was deemed structurally unacceptable; nor in compliance with the FARs. The Major Unapproved Alteration was significantly modified prior to obtaining Federal Agency approval via DER.
A Gruman-Gulfstream 1159A aircraft was reported to have operated with a major unapproved alteration of the pressure vessel lower skin. A large cutout repair was deemed structurally unacceptable; nor in compliance with the FARs by a Designated Engineering Representative (DER).