# STC SA12290CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Svenn's Aviation LLC, United States
- Description: Installation of a heavy duty tailwheel spring or ACME stinger tailwheel suspension assembly
- Applied: October 21, 2026
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS A-691](https://openairdocs.org/tcds/A-691), [TCDS A-692](https://openairdocs.org/tcds/A-692), [TCDS A-698](https://openairdocs.org/tcds/A-698), [TCDS 1A1](https://openairdocs.org/tcds/1A1), [TCDS 1A2](https://openairdocs.org/tcds/1A2), [TCDS 1A4](https://openairdocs.org/tcds/1A4), [TCDS 1A6](https://openairdocs.org/tcds/1A6), [TCDS A-780](https://openairdocs.org/tcds/A-780), [TCDS A-797](https://openairdocs.org/tcds/A-797)
- Certificate PDF: https://openairdocs.org/files/sha256/4e/d7/4ed7430b82c2e7000c1f88601a5a6356322c59840a92f3dc01a3a96f8814bf44
- Approved model list and other attachments: [SA12290CH_AML.pdf](https://openairdocs.org/files/sha256/60/b5/60b5660854e2db8235e886b4a856415eac40135fb3935daee10d63c8a51cffb2)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153391450620261110203859.0001
- DRS record last changed: November 10, 2026
- Page: https://openairdocs.org/stc/SA12290CH

## ADs that name it (0)

None.

## Approved models (54, first 50)

- FS 2002 Corp. PA-14 ([TCDS A-797](https://openairdocs.org/tcds/A-797))
- FS 2003 Corp. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780))
- FS 2003 Corp. PA-12S ([TCDS A-780](https://openairdocs.org/tcds/A-780))
- Piper Aircraft Inc. J3C-40 ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. J3C-50 ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. J3C-50S ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. J3C-65S ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. J3F-50 ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3F-50S ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3F-60 ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3F-60S ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3F-65 (Army L-4D) ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3F-65S ([TCDS A-692](https://openairdocs.org/tcds/A-692))
- Piper Aircraft Inc. J3L ([TCDS A-698](https://openairdocs.org/tcds/A-698))
- Piper Aircraft Inc. J3L-65 (Army L-4C) ([TCDS A-698](https://openairdocs.org/tcds/A-698))
- Piper Aircraft Inc. J3L-65S ([TCDS A-698](https://openairdocs.org/tcds/A-698))
- Piper Aircraft Inc. J3L-S ([TCDS A-698](https://openairdocs.org/tcds/A-698))
- Piper Aircraft Inc. PA-11 ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. PA-11S ([TCDS A-691](https://openairdocs.org/tcds/A-691))
- Piper Aircraft Inc. PA-16 ([TCDS 1A1](https://openairdocs.org/tcds/1A1))
- Piper Aircraft Inc. PA-16S ([TCDS 1A1](https://openairdocs.org/tcds/1A1))
- Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-125 (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-135 (Army L-21B) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18A-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18AS-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-18S-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-19 (Army L-18C) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-19S ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-108 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-135 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22S-135 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22S-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft Inc. PA-22S-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- Piper Aircraft, Inc. PA-20 ([TCDS 1A4](https://openairdocs.org/tcds/1A4))
- Piper Aircraft, Inc. PA-20 "115" ([TCDS 1A4](https://openairdocs.org/tcds/1A4))

All 54: https://openairdocs.org/stc/SA12290CH/models.md

## What the certificate says

The certificate has no text we could read; open the PDF to read it.

### SA12290CH_AML.pdf

FAA APPROVED MODEL LIST (AML) NO. SA12290CH Svenn’s Aviation LLC Installation of Heavy Duty Tailwheel Spring or ACME Stinger Tailwheel Suspension Assembly Issue Date: September 1st, 2026 Page 1 of 3

**ITEM**

AIRCRAFT MAKE [Common Name or Original Manufacturer]

**AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION**

**BASIS FOR**

**MODIFICATION**

INSTALLATION INSTRUCTIONS*

**FAA APPROVED**

AIRCRAFT FLIGHT MANUAL SUPPLEMENT*

**INSTRUCTIONS FOR**

**CONTINUED**

**AIRWORTHINESS AML**

**AMENDMENT DATE**

1. Piper Aircraft, Inc.

J3C-40, J3C-50, J3C-50S, J3C-65 (Army L-4, L-4A, L- 4B (Navy NE-1), L-4H, L-4J (Navy NE-2)), J3C-65S, PA- 11, PA-11S A-691 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

2. Piper Aircraft, Inc. J3F-50, J3F-50S, J3F-60, J3F-60S, (Army L-4D) J3F-65, J3F-65S A-692 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 OrSA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

3. Piper Aircraft, Inc. J3L, J3L-S, J3L-65 (ARMY L-4C), J3L-65S A-698 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

4. Piper Aircraft, Inc. PA-16, PA-16S 1A1 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

FAA APPROVED MODEL LIST (AML) NO. SA12290CH Svenn’s Aviation LLC Installation of Heavy Duty Tailwheel Spring or ACME Stinger Tailwheel Suspension Assembly Issue Date: September 1st, 2026 Page 2 of 3

**ITEM**

AIRCRAFT MAKE [Common Name or Original Manufacturer]

**AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION**

**BASIS FOR**

**MODIFICATION**

INSTALLATION INSTRUCTIONS*

**FAA APPROVED**

AIRCRAFT FLIGHT MANUAL SUPPLEMENT*

**INSTRUCTIONS FOR**

**CONTINUED**

**AIRWORTHINESS AML**

**AMENDMENT DATE**

5. Piper Aircraft, Inc.

PA-18, PA-18S, PA-18 “105” (Special), PA-18S “105” (Special), PA-18A, PA-18 “125” (Army L- 21A), PA-18S “125”, PA- 18AS “125”, PA-18 “135” (Army L-21B), PA-18A “135”, PA-18S “135”, PA- 18AS “135”, PA-18 “150”, PA-18A “150”, PA-18S “150”, PA-18AS “150”, PA-19 (Army L-18C), PA- 19S 1A2 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

6. Piper Aircraft, Inc. PA-20, PA-20S, PA-20 “115”, PA-20S “115”, PA-20 “135”, PA-20S “135” 1A4 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

7. Piper Aircraft, Inc.

PA-22, PA-22-108, PA-22- 135, PA-22S-135, PA-22- 150, PA-22S-150, PA-22- 160, and PA-22S-160 1A6 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026

ALS FAA Approved:

2/13/2026 N/A

FAA APPROVED MODEL LIST (AML) NO. SA12290CH Svenn’s Aviation LLC Installation of Heavy Duty Tailwheel Spring or ACME Stinger Tailwheel Suspension Assembly Issue Date: September 1st, 2026 Page 3 of 3 ITEM

AIRCRAFT MAKE [Common Name or Original Manufacturer]

**AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION**

**BASIS FOR**

**MODIFICATION**

INSTALLATION INSTRUCTIONS*

**FAA APPROVED**

AIRCRAFT FLIGHT MANUAL SUPPLEMENT*

**INSTRUCTIONS FOR**

**CONTINUED**

**AIRWORTHINESS AML**

**AMENDMENT DATE**

8. FS2003 Corporation PA-12 and PA-12S A-780 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026 ALS FAA Approved:

2/13/2026 N/A

9. FS2002 Corporation PA-14 A-797 CAR 3, effective May 15, 1956 as amended by 3-1 thru 3-5 SA-1600 Rev Org Dated 4/16/2024 Or SA-1605 Rev IR Dated 8/23/2026 N/A SA-1607 Rev IR Dated 2/10/2026 Or SA-1606 Rev Org Dated 2/10/2026 ALS FAA Approved:

2/13/2026 N/A * Or later FAA approved revisions.

FAA Approved: _____________________________ for Jason Deutschman Acting Branch Manager Central Certification Branch, AIR-760 Compliance and Airworthiness Division

## Every issue (1)

- Undated: Issued, Current. [certificate](https://openairdocs.org/files/sha256/4e/d7/4ed7430b82c2e7000c1f88601a5a6356322c59840a92f3dc01a3a96f8814bf44), [SA12290CH_AML.pdf](https://openairdocs.org/files/sha256/60/b5/60b5660854e2db8235e886b4a856415eac40135fb3935daee10d63c8a51cffb2)

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