# STC SA117SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Air Carrier Eng Service Inc, United States
- Description: Bergstrom BS-040-2 oil separator DL-040.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A5](https://openairdocs.org/tcds/2A5), [TCDS 3A2](https://openairdocs.org/tcds/3A2), [TCDS A-772](https://openairdocs.org/tcds/A-772), [TCDS A-786](https://openairdocs.org/tcds/A-786), [TCDS A-789](https://openairdocs.org/tcds/A-789), [TCDS A-808](https://openairdocs.org/tcds/A-808)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/76C13CF9C1C8E742862570C700545671.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA117SO

## ADs that name it (0)

None.

## Approved models (7)

- Curtiss-Wright Corporation C-46 Series ([TCDS 3A2](https://openairdocs.org/tcds/3A2))
- Curtiss-Wright Corporation C-46 Series ([TCDS A-772](https://openairdocs.org/tcds/A-772))
- Curtiss-Wright Corporation C-46 Series ([TCDS A-789](https://openairdocs.org/tcds/A-789))
- Curtiss-Wright Corporation C-46/CW20-T ([TCDS 2A5](https://openairdocs.org/tcds/2A5))
- Curtiss-Wright Corporation C-46E ([TCDS A-786](https://openairdocs.org/tcds/A-786))
- Curtiss-Wright Corporation C-46F ([TCDS A-808](https://openairdocs.org/tcds/A-808))
- Curtiss-Wright Corporation Super C-46/CW20-T ([TCDS 2A5](https://openairdocs.org/tcds/2A5))

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