# STC SE00022EN

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Helicopter Support Inc Services Div, United States
- Description: Installation of Oil Tank Filler Neck Check Valve.
- Applied: April 19, 1989
- Status date: January 30, 2004
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E21NE](https://openairdocs.org/tcds/E21NE), [TCDS E22EA](https://openairdocs.org/tcds/E22EA), [TCDS E26NE](https://openairdocs.org/tcds/E26NE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/64509C919E9BA98786256E3E00700484.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE00022EN

## ADs that name it (0)

None.

## Approved models (10)

- Pratt & Whitney Canada Inc. PT6A-66 ([TCDS E26NE](https://openairdocs.org/tcds/E26NE))
- Pratt & Whitney Canada Inc. PT6A-67 ([TCDS E26NE](https://openairdocs.org/tcds/E26NE))
- Pratt & Whitney Canada Inc. PT6A-67A ([TCDS E26NE](https://openairdocs.org/tcds/E26NE))
- Pratt & Whitney Canada Inc. PT6A-67R ([TCDS E26NE](https://openairdocs.org/tcds/E26NE))
- Pratt & Whitney Canada Inc. PT6B-36 ([TCDS E21NE](https://openairdocs.org/tcds/E21NE))
- Pratt & Whitney Canada Inc. PT6B-36A ([TCDS E21NE](https://openairdocs.org/tcds/E21NE))
- Pratt & Whitney Canada Inc. PT6T-3 ([TCDS E22EA](https://openairdocs.org/tcds/E22EA))
- Pratt & Whitney Canada Inc. PT6T-3A ([TCDS E22EA](https://openairdocs.org/tcds/E22EA))
- Pratt & Whitney Canada Inc. PT6T-3B ([TCDS E22EA](https://openairdocs.org/tcds/E22EA))
- Pratt & Whitney Canada Inc. PT6T-6 ([TCDS E22EA](https://openairdocs.org/tcds/E22EA))

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