# STC SA1988SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shackleton Aviation Inc., United States
- Description: Modify cabin pressurization system using General Air Services, Inc., drawing no. CV60-014 dtd 9/2/86, or later FAA approved revision.
- Status date: May 30, 2001
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A6](https://openairdocs.org/tcds/6A6)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E4F20D886DE5B3985256CC10083D3C6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1988SO

## ADs that name it (0)

None.

## Approved models (2)

- Tracor Flight Systems Inc. 340 ([TCDS 6A6](https://openairdocs.org/tcds/6A6))
- Tracor Flight Systems Inc. 440 Military C-131E ([TCDS 6A6](https://openairdocs.org/tcds/6A6))

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