# STC SA550WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Serv-Aero Engineering Inc, United States
- Description: Wing auxiliary fuel tanks.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A7](https://openairdocs.org/tcds/2A7)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F96323EDC65BE1BB862570D1006F500C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA550WE

## ADs that name it (0)

None.

## Approved models (3)

- Ayres Corporation 600-S2C ([TCDS 2A7](https://openairdocs.org/tcds/2A7))
- Ayres Corporation S-2B ([TCDS 2A7](https://openairdocs.org/tcds/2A7))
- Ayres Corporation S-2C ([TCDS 2A7](https://openairdocs.org/tcds/2A7))

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