# STC SA3117SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Zantop Intl Airlines Inc, United States
- Description: Installation of an engine reduction gearbox electrical/magnetic chip detector system.
- Status date: December 11, 1991
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A22](https://openairdocs.org/tcds/4A22)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E3571CDB05F3CF9385256CC2000A9407.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3117SO

## ADs that name it (0)

None.

## Approved models (2)

- Lockheed Aircraft Corporation 188A ([TCDS 4A22](https://openairdocs.org/tcds/4A22))
- Lockheed Aircraft Corporation 188C ([TCDS 4A22](https://openairdocs.org/tcds/4A22))

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