# STC SA00378SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: BLR Aerospace LLC., United States
- Description: Boundary Layer Research, Inc, Wing Rib Reinforcement Modification. (and T-1020)
- Applied: September 10, 1996
- Status date: August 23, 2018
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/c9/41/c94158316ac8cc465d6069bc34e7e3d96f247014ae2ae3d6f30ef430ecd8fafd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6629FB3735C7EBAF862582F7005E3BF1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA00378SE

## ADs that name it (0)

None.

## Approved models (1)

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

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate

Number SA00378SE

This certificate, issued to BLR Aerospace, LLC 11002 29th Ave. West Everett, WA 98204

Part 3 of the Civil Air Regulations.

Original ProductType Certificate Number: AS0SO Make: Piper Model: PA-31-350 (Chieftain) and (T-1020)

Description of the Type Design Change: BLR Aerospace Wing Rib Reinforcement Modification Wing Rib Reinforcement Modification. Manufactured in accordance with Master Drawing List BL2010, dated October 5, 1996, and Installed in accordance with Installation Manual BL-2009, dated October 05, 1996, or later FAA-approved revisions.

NOTE: Landing gear rigging must be maintained in accordance with Placard, Part Number CH 2039-4 (installed on lower side of main landing gear actuator as part of this STC.).

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only.

This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no a dverse effect upon airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

Date of application: September 10, 1996 Date reissued: November 23, 2009; August 23, 2018 Date of issuance: October 15, 1996 Date amended:

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

## Every issue (2)

- August 23, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c9/41/c94158316ac8cc465d6069bc34e7e3d96f247014ae2ae3d6f30ef430ecd8fafd)
- November 23, 2009: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/71/15/711562fcc7ca16509758a09d67faf769b8b281400614ff74af0b513c4e9ed1d3)

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