# STC SA400AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Jake Bryant, United States
- Description: Conversion of 4-inch wheels and brakes to 6-inch wheels and brakes.
- Status date: August 19, 1970
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5FADF0C31971469C85256CC2000C601A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA400AL

## ADs that name it (0)

None.

## Approved models (8)

- The New Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18"105" (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18-"125" (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18-"135" (Army L-21B) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18-"150" ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18A-"135" ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18A-"150" ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

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