# STC SA421GL

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Knots 2U Ltd
- Description: Installation of aileron and flap gap seals.
- Status date: November 20, 2006
- Data sheets: 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15
- Certificate PDF: https://openairdocs.org/files/sha256/86/d4/86d4e3fd921fd0e6cc2680700c7858dd27aac5778fee7de0ab4c84c964453577
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2FBC85DEDEB901E3862575DF007113DA.0001
- Page: https://openairdocs.org/stc/SA421GL

## ADs that name it

None.

## Approved models (26)

- Raytheon Aircraft Company 35-33 (TCDS 3A15)
- Raytheon Aircraft Company 35-A33 (TCDS 3A15)
- Raytheon Aircraft Company 35-B33 (TCDS 3A15)
- Raytheon Aircraft Company 35-C33 (TCDS 3A15)
- Raytheon Aircraft Company 35-C33A (TCDS 3A15)
- Raytheon Aircraft Company 36 (TCDS 3A15)
- Raytheon Aircraft Company A36 (TCDS 3A15)
- Raytheon Aircraft Company A36TC (TCDS 3A15)
- Raytheon Aircraft Company B36TC (TCDS 3A15)
- Raytheon Aircraft Company E33 (TCDS 3A15)
- Raytheon Aircraft Company E33A (TCDS 3A15)
- Raytheon Aircraft Company E33C (TCDS 3A15)
- Raytheon Aircraft Company F33 (TCDS 3A15)
- Raytheon Aircraft Company F33A (TCDS 3A15)
- Raytheon Aircraft Company F33C (TCDS 3A15)
- Raytheon Aircraft Company G33 (TCDS 3A15)
- Raytheon Aircraft Company H35 (TCDS 3A15)
- Raytheon Aircraft Company J35 (TCDS 3A15)
- Raytheon Aircraft Company K35 (TCDS 3A15)
- Raytheon Aircraft Company M35 (TCDS 3A15)
- Raytheon Aircraft Company N35 (TCDS 3A15)
- Raytheon Aircraft Company P35 (TCDS 3A15)
- Raytheon Aircraft Company S35 (TCDS 3A15)
- Raytheon Aircraft Company V35 (TCDS 3A15)
- Raytheon Aircraft Company V35A (TCDS 3A15)
- Raytheon Aircraft Company V35B (TCDS 3A15)

## 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.

Part 3 of the Civil Air Regulations. (See Type Certificate Data Sheet No. 3A15 for complete certification basis)

Install Flap and Aileron Gap Seals in accordance with “Knots 2U, Ltd. Installation Manual, Flap Aileron Flap/Fuse Seal Kit, STC Nos. SA421GL & SA957GL”, Revision A, dated August 4, 1998, or later FAA approved revisions.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Knots 2U, Ltd.

3106 Bieneman Road Burlington, WI 53105 3A15 Make : Raytheon Aircraft Company Model : 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, E33C, F33, F33A, F33C, G33, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B, 36, A36, A36TC, B36TC, G36 Date of application : 6/02/80

Date of issuance : 7/03/80

Date reissued : 8/23/84; 8/24/84; 5/07/97

Date amended : 10/17/80; 4/23/81; 8/23/85; 11/15/85; 11/18/91;

12/01/98; 11/20/06

( Signature) Gregory J. Michalik Senior Aerospace Engineer, Ariframe & Admin. Branch Chicago Aircraft Certification Office

( Title)

Original signed by:

Gregory J. Michalik

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

Number

## Every issue (1)

- November 20, 2006: Amended, Current. [certificate](https://openairdocs.org/files/sha256/86/d4/86d4e3fd921fd0e6cc2680700c7858dd27aac5778fee7de0ab4c84c964453577)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.