# STC SA2718WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Bay Aviation Svcs, Inc, United States
- Description: Installation of intermixed engines, Wright R1820-76A and Wright 987C9HD1 engines. (Learstar)
- Status date: June 29, 1973
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-723](https://openairdocs.org/tcds/A-723)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9BD6419876A4B9BC85256CC20008C7EE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2718WE

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation Lockheed 18 ([TCDS A-723](https://openairdocs.org/tcds/A-723))

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