# STC SA503NE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aerocet, Inc, United States
- Description: Installation of oil cooler door, P/N E921.
- Status date: January 13, 1987
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/512A8DCB02D8D32285256CC200122637.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA503NE

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

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