# STC SH1853SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Facet Filter Products, United States
- Description: A lubrication oil scavenge filter is installed in the existing scavenge system.
- Status date: May 1, 1990
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AF12398890AFFAD785256CC2005C2F22.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH1853SO

## ADs that name it (1)

- [AD 87-19-01](https://openairdocs.org/ad/87-19-01): Stc Sh479gl Labels · Lubrication oil scavenge filter is installed in the existing… (Facet Filter Products STC SH1853SO or 3 others). Effective Dec 18, 1987. Named in the applicability

## Approved models (3)

- Eurocopter Deutschland GmbH MBB-BK 117 A-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))
- Eurocopter Deutschland GmbH MBB-BK 117 A-3 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))
- Eurocopter Deutschland GmbH MBB-BK 117 B-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))

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