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.

listed Current at snapshot

aircraft directories

modification categories

Sep 30, 2022

latest recorded revision

Recently revised records

Showing the 22 most recently revised records. Category directories provide the complete paginated discovery path.

22 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Structural Integrity Engineering supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
ST02793LA Modification of Boeing 747-400F Airplane Weight and Balance Manual to allow transportation of the Virgin Orbit LauncherOne Unit Load Devices, ULD’s. Aircraft performance View record	Boeing 747-400F SeriesTC A20WE	Current at cited snapshot Revised Sep 30, 2022 Application: Jun 12, 2020	FAA holder: Structural Integrity Engineering FAA authority record
ST00939AT Approval of increased operating weights as substantiated by the design data listed in SIE Master Report List SIE 28-706, Revision A. Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Aug 25, 2017 Application: Jun 19, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00925AT Approval of increased operating weights as substantiated by the design data listed in Structural Integrity Engineering (SIE) Master Report List No. SIE-28-707, no revision, dated August 28, 1995, and modified. Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Mar 28, 2007 Application: May 12, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST01861LA Modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications. Cargo and special mission View record	McDonnell Douglas DC-8-63TC 4A25 McDonnell Douglas DC-8-73TC 4A25	Current at cited snapshot Revised Jan 31, 2006 Application: Apr 27, 2005	FAA holder: Structural Integrity Engineering FAA authority record
ST00795AT 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). Fuel systems View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Jan 20, 2005 Application: May 10, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST01043AT Approval of increased operating weights. Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Jan 20, 2005 Application: Jan 10, 1996	FAA holder: Structural Integrity Engineering FAA authority record
ST00770LA Increased aircraft main deck cargo floor capacity between Fuselage Stations 740 to 950. Cargo and special mission View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised May 11, 2004 Application: Jul 8, 1998	FAA holder: Structural Integrity Engineering FAA authority record
SA00364LA Retirement life extension of de Havilland DHC-6-300 wing in accordance with FAA approved Structural Integrity Engineering Master Drawing List SIE-23-900, Revision B, dated April 7, 1997, or later FAA approved revision. Aircraft structures View record	Bombardier DHC-6-300TC A9EA	Current at cited snapshot Revised Dec 29, 2003 Application: Jan 25, 1994	FAA holder: Structural Integrity Engineering FAA authority record
SA5510NM Modification in accordance with FAA approved SIE Drawing List 9000 N/C,, dated August 7, 1991, or later FAA approved revisions, to permit an increased maximum zero fuel weight (MZFW), and maximum landing weight (MLW) of DC-8-61 airplanes. Fuel systems View record	McDonnell Douglas DC-8-61TC 4A25	Current at cited snapshot Revised Dec 29, 2003 Application: Jan 22, 1990	FAA holder: Structural Integrity Engineering FAA authority record
SA6073NM Installation of fatigue sensor and structural life extension of wing spar in accordance with FAA approved SIE Master Drawing List 91000, Revision A, dated September 23, 1993, or later FAA approved revision, and FAA approved Airplane Flight Manual Supplement Report No. SIE-12-601, Revision N/C, dated October 19, 1993 or later FAA approved Airplane Flight Manual Supplement, and Report No. SIE-12-602, Revision N/C, dated December 21, 1993, or later FAA approved Revision. (SIE-12-601 is for model C99 only, and SIE-12-602 is for the remaining models, 99, 99A, A99A, and B99.). Aircraft structures View record	Raytheon Aircraft 99TC A14CE Raytheon Aircraft 99ATC A14CE Raytheon Aircraft A99ATC A14CE Raytheon Aircraft B99TC A14CE Raytheon Aircraft C99TC A14CE	Current at cited snapshot Revised Dec 29, 2003 Application: Sep 1, 1992	FAA holder: Structural Integrity Engineering FAA authority record
ST00633AT Approval of maximum zero fuel weight increase from 138,000 pounds to 146,000 pounds. (727-200 SERIES S/N 19483, 19484, 19486, 19491, 20180, 20184, 20185, 20187, 20995, 20996, 19480, 19492, 19481, 19482, 19485, 20191 ONLY). Fuel systems View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Dec 9, 1994	FAA holder: Structural Integrity Engineering FAA authority record
ST00671AT Approval of maximum landing weight increase from 160,000 pounds to 164,000 pounds. (727-200 SERIES S/N 21930 AND 21931 ONLY). Aircraft performance View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Jan 11, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00719AT Approval of increased operating weights as substantiated by the design data listed in Structural Integrity Engineering (SIE) Master Report List or Master Document List No. SIE-28-703, no revision, dated February 24, 1995, or later FAA approved revision. Aircraft with Increase of Maximum Takeoff or Landing Weight must also be modified in accordance with: Drawing SIE-28-901 (taxi weight up to 183,000 lb, landing weight to 164,000 lb), 28-904 (taxi weight up to 178, 500 lbs, landing weight to 164,000 lbs), 28-905 (taxi weight up to 191,000 lb, landing weight to 164,000 lbs), Rev NC or later FAA approved revisions. Aircraft performance View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Mar 1, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00720AT Approval of maximum zero fuel weight and maximum landing weight (Flaps 30) increases to 157,500 pounds and 166,000 pounds, respectively. (727-200 SERIES S/N 22080 ONLY). Fuel systems View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Jan 11, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00778LA Installation of splitter locks and floor modifications to increase the main deck cargo floor capacity. Cargo and special mission View record	Boeing 727-200 SeriesTC A3WE Boeing 727-100 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Feb 18, 1997	FAA holder: Structural Integrity Engineering FAA authority record
ST00779LA Installation of side vertical restraints in accordance with approved Master Drawing List SIE 37-703, Revision A, dated May 25, 1999, or later FAA approved revisions. Structural Integrity Engineering FAA Approved Airplane Flight Manual Supplement, SIE 37-607 dated May 26, 1999, or later FAA approved revisions and Weight and Balance Supplement, SIE 37-608, dated February 9, 1999, or later FAA approved revisions, are required as part of this modification. Aircraft performance View record	Boeing 727-200 SeriesTC A3WE Boeing 727-100 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Dec 10, 1998	FAA holder: Structural Integrity Engineering FAA authority record
ST00782AT Approval of maximum zero fuel weight increase to 132,000 pounds. (727-100 SERIES S/N 19183 ONLY). Fuel systems View record	Boeing 727-100 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: May 23, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00901AT Approval of increased operating weights as substantiated by the design data listed in SIE-28-902. (727-200 S/N 21269, 21245 ONLY). Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: May 12, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00926AT Approval of increased operating weights as substantiated by the design data listed in SIE No. SIE-28-713. (727-200 S/N'S 21085, 20997 ONLY). Other aircraft modifications View record	Boeing 727TC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Oct 24, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST00949AT Approval of increased operating weights as substantiated by the design data listed in SIE Master Report List SIE-28-717. (727-200 SERIES S/N 21161 ONLY). Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Dec 11, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST01013AT Approval of increased operating weights. Limited to installation on serial numbers 21327, 21328, 21329, 21330, and 21331 ONLY. Other aircraft modifications View record	Boeing 727-200 SeriesTC A3WE	Current at cited snapshot Revised Dec 29, 2003 Application: Nov 30, 1995	FAA holder: Structural Integrity Engineering FAA authority record
ST01181LA Installation of modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications. Cargo and special mission View record	McDonnell Douglas DC-8-55TC 4A25 McDonnell Douglas DC-8-61TC 4A25 McDonnell Douglas DC-8-62TC 4A25 McDonnell Douglas DC-8-63TC 4A25 McDonnell Douglas DC-8-71TC 4A25 McDonnell Douglas DC-8-73TC 4A25	Current at cited snapshot Revised Dec 29, 2003 Application: Apr 7, 2000	FAA holder: Structural Integrity Engineering FAA authority record

Structural Integrity Engineering STCs

Modification mix

Aircraft represented

Recently revised records

Modification of Boeing 747-400F Airplane Weight and Balance Manual to allow transportation of the Virgin Orbit LauncherOne Unit Load Devices, ULD’s.

Approval of increased operating weights as substantiated by the design data listed in SIE Master Report List SIE 28-706, Revision A.

Approval of increased operating weights as substantiated by the design data listed in Structural Integrity Engineering (SIE) Master Report List No. SIE-28-707, no revision, dated August 28, 1995, and modified.

Modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications.

Approval of increased operating weights.

Increased aircraft main deck cargo floor capacity between Fuselage Stations 740 to 950.

Retirement life extension of de Havilland DHC-6-300 wing in accordance with FAA approved Structural Integrity Engineering Master Drawing List SIE-23-900, Revision B, dated April 7, 1997, or later FAA approved revision.

Modification in accordance with FAA approved SIE Drawing List 9000 N/C,, dated August 7, 1991, or later FAA approved revisions, to permit an increased maximum zero fuel weight (MZFW), and maximum landing weight (MLW) of DC-8-61 airplanes.

Approval of maximum zero fuel weight increase from 138,000 pounds to 146,000 pounds. (727-200 SERIES S/N 19483, 19484, 19486, 19491, 20180, 20184, 20185, 20187, 20995, 20996, 19480, 19492, 19481, 19482, 19485, 20191 ONLY).

Approval of maximum landing weight increase from 160,000 pounds to 164,000 pounds. (727-200 SERIES S/N 21930 AND 21931 ONLY).

Approval of maximum zero fuel weight and maximum landing weight (Flaps 30) increases to 157,500 pounds and 166,000 pounds, respectively. (727-200 SERIES S/N 22080 ONLY).

Installation of splitter locks and floor modifications to increase the main deck cargo floor capacity.

Approval of maximum zero fuel weight increase to 132,000 pounds. (727-100 SERIES S/N 19183 ONLY).

Approval of increased operating weights as substantiated by the design data listed in SIE-28-902. (727-200 S/N 21269, 21245 ONLY).

Approval of increased operating weights as substantiated by the design data listed in SIE No. SIE-28-713. (727-200 S/N'S 21085, 20997 ONLY).

Approval of increased operating weights as substantiated by the design data listed in SIE Master Report List SIE-28-717. (727-200 SERIES S/N 21161 ONLY).

Approval of increased operating weights. Limited to installation on serial numbers 21327, 21328, 21329, 21330, and 21331 ONLY.

Installation of modifications to the 9-G rigid barrier, cargo door surround structure and other attendant modifications.