# STC SA04218NY

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aerospace Design & Compliance LLC, United States
- Description: Installation of Wing Tip Low Profile Pylons with Pods, Underwing Wiring Tunnel and Optional Underwing Antenna Provisions and Antennas
- Applied: March 1, 2021
- Status date: August 28, 2026
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A24CE](https://openairdocs.org/tcds/A24CE)
- Certificate PDF: https://openairdocs.org/files/sha256/ee/c1/eec15fda438462df7d6ba609c33632d8a2a872b005d7b0167fe9edb1c5c84501
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103402676220260902151619.0001
- DRS record last changed: September 2, 2026
- Page: https://openairdocs.org/stc/SA04218NY

## ADs that name it (0)

None.

## Approved models (4)

- Textron Aviation Inc. B300 ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))
- Textron Aviation Inc. B300C ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))
- Textron Aviation Inc. B300C (MC-12W) ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))
- Textron Aviation Inc. B300C (UC-12W) ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))

## 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.

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SA04218NY Aerospace Design & Compliance LLC.

10 Corporate Circle, Suite 225 New Castle, DE 19720 23 14 CFR A24CE Textron Aviation Inc.

B300/B300C Installation of Wing Tip Low Profile Pylons with Pods, Underwing Wiring Tunnel and Optional Underwing Antenna Provisions and Antennas in accordance with: (1) Master Data List (MDL) B350-MDL-0087, Revision A, dated August 27, 2026, or later FAA approved revision.

(Description of Type Design Change Continued on Page 3 of 4)

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

(Limitations and Conditions Continued on Page 3 of 4) March 1, 2021 September 22, 2022 August 28, 2026 ODA administrator, ODA-834634-NE 4

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Date oI transfer:

SA04218NY 4

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nited States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04218NY Date of amendment: August 28, 2026 Description of Type Design Change (Continued):

(2) Instructions for Continued Airworthiness (ICA) 289-801, Revision C, dated Jul 14, 2022, or later FAA accepted revision, shall be made available to the operator at the time of installation and be incorporated into the operator's maintenance program.

(3) For Configuration A - Aircraft Flight Manual Supplement (AFMS) 289-190, Rev IR, dated Sep 22, 2022, or later FAA approved revision or for Configuration B - Aircraft Flight Manual Supplement (AFMS) 340-190, Rev IR, dated Aug 27, 2026, or later FAA approved revision. The applicable AFMS is required and must be carried during all flights.

(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 the Make: Textron Aviation Inc., Models: B300/B300C, with the prerequisite FAA STC SA01965WI applied for installation of Wing Tip hard points and for Configuration A - with a 15,000 lbs MTOW, PT6A-60 Engines or for Configuration B - with a 17,500 lbs MTOW (Textron Kit 130-8004), PT6A-60A Engines, 4-blade Hartzell propellers.

(4) For Configuration A - this approval is limited to only the installation of the Wing Tip Low Profile Pylons with Pod provisions and Underwing Wiring Tunnel with underwing antenna provisions/antenna installations. The Pod stores is limited to the Enhanced Medium Altitude Reconnaissance and Surveillance System (EMARSS) Long Pod (PN 0557-9930-4002-1/-2) per dwg AD289-57-0000.

For Configuration B - this approval is limited to only the installation of the LH Wing Tip Low Profile Pylon with Pod provision. The Pod store is limited a single LH only NSP-7 Pod per dwg AD289-57-0125-1.

For Configuration A & B, the FAA has not certified the Pods for which these provisions are intended. Additional FAA approval to install this equipment is required. The FAA must evaluate the installation to ensure it complies with the applicable airworthiness standards.

(5) Aircraft is required to be Operated in Restricted Category with the Pods and/or underwing antennas installed in accordance with FAA Order 8110.56.

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nited States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04218NY Date of amendment: August 28, 2026 Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for all of the eligible aircraft models is as follows:

(1) The type certification basis for Textron, Model B300/B300C airplane is shown on the TCDS A24CE for parts not changed or not affected by the change.

(2) The certification basis for parts changed or affected by the change since the reference date of application Mar 1, 2021, is based upon part 23 as amended by Amendment 23-34 except for those above amendment 23-34, listed below.

Regulations at later amendment than 23-34:

14 CFR Part 23.49(a)(2)(3)(4)(5)(6)(b) amdt 23-50; 23.201(a)(b)(c)(d)(e)(1)(2)(4)(5)(6), admt 23-50; 23.203(a)(b)(c)(1)(2)(4)(5)(6) amdt 23-50; 23.207(a)(b)(d)(e) amdt 23-50;

23.445(a)(b)(c) amdt 23-42; 23.561(a)(b)(c)(d)(e) amdt 23-48; 23.607(a)(b)(c) amdt 23-48; 23.611 amdt 23-48; 23.613(a)(b) amdt 23-45; 23.621(a)(b)(c)(d)(e) amdt 23-45;

23.1545(d) amdt 23-50; 23.1583(h)(m) amdt 23.62; 23.1585(a)(1)(2) amdt 23-62.

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## Every issue (1)

- August 28, 2026: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ee/c1/eec15fda438462df7d6ba609c33632d8a2a872b005d7b0167fe9edb1c5c84501)

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