FAA-listed STC holder
Structural Integrity Engineering STCs
The Jun 30, 2026 FAA DRS snapshot lists 22 selected supplemental type certificates with status Current under Structural Integrity Engineering. The records span 16 public aircraft directories and 5 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
Modification mix
Aircraft represented
Recently revised records
Showing the 22 most recently revised records. Category directories provide the complete paginated discovery path.
Modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications.
FAA holder: Structural Integrity Engineering
Approval of maximum zero fuel weight increase (155,000 lbs.) and maximum landing weight increase(164,000 lbs.). Data pertaining to this modification are considered inadequate for duplication in other aircraft.This approval is limited to the installation in the Boeing 727-200, (Serial Number 20938 only).
FAA holder: Structural Integrity Engineering
Approval of increased operating weights.
FAA holder: Structural Integrity Engineering
Increased aircraft main deck cargo floor capacity between Fuselage Stations 740 to 950.
FAA holder: Structural Integrity Engineering
Approval of maximum landing weight increase from 160,000 pounds to 164,000 pounds. (727-200 SERIES S/N 21930 AND 21931 ONLY).
FAA holder: Structural Integrity Engineering
Installation of splitter locks and floor modifications to increase the main deck cargo floor capacity.
FAA holder: Structural Integrity Engineering
Approval of maximum zero fuel weight increase to 132,000 pounds. (727-100 SERIES S/N 19183 ONLY).
FAA holder: Structural Integrity Engineering
Approval of increased operating weights. Limited to installation on serial numbers 21327, 21328, 21329, 21330, and 21331 ONLY.
FAA holder: Structural Integrity Engineering
Installation of modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications.
FAA holder: Structural Integrity Engineering