# STC SA4385WP

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Bob Fields Aerocessories, United States
- Description: Installation of inflatable door seal.
- Status date: December 4, 1981
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D65DD2CA84380F3985256CC2000E3C17.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4385WP

## ADs that name it (2)

- [AD 98-21-21 R1](https://openairdocs.org/ad/98-21-21-R1): Electric Inflatable Door Seals · Cessna 17-30, 17-30A, 17-31 and 267 more. Effective May 1, 2000. Named in the applicability
- [AD 98-21-21](https://openairdocs.org/ad/98-21-21) (historical): Inflatable Door Seals · Bob Fields Aerocessories Electric Inflatable Door Seal. Effective Oct 30, 1998. Named in the applicability

## Approved models (4)

- The New Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-300 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

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