# STC SR02553LA

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of HeliSAS®/Autopilot System
- Applied: May 15, 2015
- Status date: April 25, 2022
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS R00015LA](https://openairdocs.org/tcds/R00015LA)
- Certificate PDF: https://openairdocs.org/files/sha256/aa/71/aa714b9ced5d0bea295b6979af9a1ca2c31b1bb92d2d683843054030d46fdc70
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AD4F5F77D954C95B8625885400539423.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR02553LA

## ADs that name it (0)

None.

## Approved models (1)

- Robinson Helicopter Company R66 ([TCDS R00015LA](https://openairdocs.org/tcds/R00015LA))

## 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.

SR02553LA S-TEC Corporation One S-TEC Way Mineral Wells, TX 76067-9236 27 Code of Federal Regulations R00015LA Robinson Helicopter Company R66

1. Installation of an HeliSAS Stability Augmentation System / Autopilot in accordance with Master Data List, ST-953-MDL-0001, Rev. F, dated April 20, 2022, or later FAA approved revisions.

2. Rotorcraft Flight Manual Supplement to the Robinson Helicopter Compnay R66 Rotorcraft Flight Manual, ST-953-RFMS-0001, Rev. C, dated April 25, 2022, or later FAA approved revisions. (See continuation sheet 3)

1. This STC is applicable to all serial numbers for Robinson Helicopter Company Model R66. (See continuation sheet 3) May 15, 2015 January 21, 2016 April 25, 2022 Lead ODA administrator 3

SR02553LA Description of Type Design Change:

3. Instructions for Continued Airworthiness ST-953-ICA-0001, Rev. A, dated April 25, 2022, or later FAA approved revisions, Limitations and Conditions:

2. The installer must determine whether this design change is compatible with previously approved modifications.

3. If the holder agrees to permit another person to use this certificate to alter a product the holder must give the other person written evidence of that permission.

4. Certification Basis: Compliance determination used for this STC, 14 Code of CFR Requirements of Part 27 and Special Condition No. 27-035-SC, as given in S-TEC 14 CFR Compliance Checklist, Document No. ST-953-CCL-0001 Revision -, dated May 13, 2015.

- END -

April 25, 2022 3 3

## Every issue (2)

- April 25, 2022: Amended, Current. [certificate](https://openairdocs.org/files/sha256/aa/71/aa714b9ced5d0bea295b6979af9a1ca2c31b1bb92d2d683843054030d46fdc70)
- January 21, 2016: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/c6/8c/c68cd9579259b11991d11640fd84f0a9e08264a0f6dfc88945d78c3dd2fe1c92)

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