# STC SA04841NY

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Whelen Aerospace Technologies, United States
- Description: Installation of replacement LED recognition lights, LED wingtip lights, LED beacon lights, LED taxi lights, and LED landing lights
- Applied: February 21, 2023
- Status date: September 23, 2025
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A78EU](https://openairdocs.org/tcds/A78EU)
- Certificate PDF: https://openairdocs.org/files/sha256/8c/16/8c16b3a17935ba811b365133b1eda19fcd20163f60e3c689282dd71ac77237c2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127787534420251209183849.0001
- DRS record last changed: December 19, 2025
- Page: https://openairdocs.org/stc/SA04841NY

## ADs that name it (0)

None.

## Approved models (4)

- Pilatus Aircraft Ltd. PC-12 ([TCDS A78EU](https://openairdocs.org/tcds/A78EU))
- Pilatus Aircraft Ltd. PC-12/45 ([TCDS A78EU](https://openairdocs.org/tcds/A78EU))
- Pilatus Aircraft Ltd. PC-12/47 ([TCDS A78EU](https://openairdocs.org/tcds/A78EU))
- Pilatus Aircraft Ltd. PC-12/47E ([TCDS A78EU](https://openairdocs.org/tcds/A78EU))

## 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.

SA04841NY Whelen Aerospace Technologies 51 Winthrop Road Chester, CT 06412 23 Title 14 Code of Regulations A78EU Pilatus Aircraft Ltd.

Pilatus PC-12, PC-12/45, PC-12/47, PC-12/47E

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

(Limitations and Conditions continued on page 3 of 3) 02/21/2023 05/06/2024 03/20/2024 Michael Linegang Manager, East Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3

1. Installation of replacement LED recognition lights, LED wingtip lights, LED beacon lights, LED taxi lights, and LED landing lights in accordance with Sterling Helicopter Master Drawing List (MDL), Document No. ST-9791-02, Rev. -, dated Jan 23, 2024 or later FAA approved revisions.

2. Maintenance to be performed in accordance with Sterling Helicopter Instructions for Continued Airworthiness(ICA) Document Number ST-9791-03, Rev. -, dated February 5, 2024 or later FAA accepted revisions.

09/23/2025

SA04841NY 09/23/2025 3

SA04841NY 09/23/2025 Limitations and Conditions continued:

2. 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.

3. This STC is applicable to all serial numbers for Pilatus PC-12 Series aircraft.

Certification Basis:

1. Based on 14 CFR §§21.115 and 14 CFR 21.101 and the FAA Order 8110.48, the Certification Bases for Pilatus Aircraft Ltd. Models Pilatus PC-12, PC-12/45, PC-12/47, and PC-12/47E modification are as follows:

a. The type certification basis for the PC-12 series aircraft is shown on the TCDSA78EU for parts not changed or not affected by this change.

b. The certification basis for parts changed or affected by the change since thereference date of application February 21, 2023, is based upon Part 23 as amended by Amendment 23-62 and is as follows:Regulations at amendment 23-0 through 23-62:

23.301(a)(b) Amdt. 23-48, 23.303 Amdt. 23-42, 23.305(a)(b) Amdt. 23-45, 23.307(a) Amdt. 23-0,

23.337(a) Amdt. 23-34, 23.561(a)(c) Amdt. 23-48, 23.601 Amdt. 23-0, 23.603 Amdt. 23-23, 23.605(a) Amdt. 23-23, 23.607 Amdt. 23-48, 23.609 Amdt. 23-0, 23.611 Amdt. 23-48, 23.771(a) Amdt. 23-14,

23.773(a)(1)(2) Amdt. 23-45C, 23.1301 Amdt. 23-62, 23.1357(a)(b)(c)(d) Amdt. 23-43, 23.1383 Amdt. 23-49, 23.1385(a)(b) Amdt. 23-43, 23.1401 Amdt. 23-49, 23.1431(a)(b)(e) Amdt. 23-62,

23.1351(a)(2)(i) Amdt. 23-49, 23.1529 Amdt. 23-26, Part 23, G23.1 Amdt. 23-26, Part 23, G23.2 Amdt. 23-26, Part 23, G23.3 Amdt. 23-34, Part 23, G23.4 Amdt. 23-37, 23.1309(a)(b)(c) Amdt.

23-62, 23.1387 Amdt. 23-43, 23.1389 Amdt. 23-43, 23.1391 Amdt. 23-43, 23.1393 Amdt. 23-43,

23.1395 Amdt. 23-43, 23.1397 Amdt. 23-11.

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## Every issue (3)

- September 23, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8c/16/8c16b3a17935ba811b365133b1eda19fcd20163f60e3c689282dd71ac77237c2)
- May 6, 2024: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/50/10/50104adb8908aab1d222a73d0f7ee4476ac4f162e635ba7224d1d2a56589b8df)
- March 20, 2024: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/46/30/46305ed67fddf2a4a9715a44528becf7746d0f03b04e1f784b8a7bde39d9fc06)

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