# STC SA1767SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Federal Express Corp, United States
- Description: Upgrades mechanical systems (torque tube, latches) of Main Deck Cargo Door, and incorporates National Aircraft Services, Inc. (NASI) STC ST01438CH that adds a vent door system with locking feature, and upgrades cargo door monitoring and warning system.  This STC and the NASI STC also upgrades Maintenance Program and Documents for Continued Airworthiness for maintaining cargo door installation and rigging for mechanical, electrical, and cargo door monitoring and warning system.
- Applied: September 21, 1984
- Status date: November 26, 2002
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/25DEB1C8E301266386256D0A00639A46.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1767SO

## ADs that name it (3)

- [AD 2002-16-19](https://openairdocs.org/ad/2002-16-19): Main Deck Cargo Door Hinge · Upgrades mechanical systems (Federal Express STC SA1767SO or SA1768SO). Effective Sep 19, 2002. Named in the applicability
- [AD 2002-07-09](https://openairdocs.org/ad/2002-07-09): Lower Skin Panel at the Lower Row of Fasteners in Lap Joints of the Fuselage · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 more. Effective May 17, 2002. Cited in the text
- [AD 98-26-18](https://openairdocs.org/ad/98-26-18): Main Cargo Deck · Upgrades mechanical systems (Federal Express STC SA1767SO or 2 others). Effective Feb 16, 1999. Named in the applicability

## Approved models (2)

- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

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