STC SA00728DE

Number: SA00728DE

Part 23 of the Federal Aviation Regulations.

Original Product Type Certificate Number: A24CE Make: Textron Aviation Inc. Model: B300, B300C

Date of Application: April 14, 2010 Date Reissued:

Date of Issuance: May 26, 2011 Date Amended: September 10, 2014, October 21, 2015, October 13, 2017, May 3, 2024 By Direction of the Administrator Signature:

Brenda L. Litchfield ODA Administrator Title: Envoy Aerospace, LLC ODA-831240-CE Stratton Park Engineering Company Incorporated 3022 Sterling Circle, Suite 200 Boulder, Colorado 80301

1) This STC is applicable to serial numbers for Textron Aviation Inc. B300 and B300C as defined in SPEC Inc.

General Arrangement, Structural and Electrical Modification, Drawing No. 200-0610, Revision H, dated April 16, 2024, or later FAA approved revision.

2) This approval does not include installation of weather research equipment. This approval only certifies the installation of structural fittings in the aircraft that have been substantiated for a maximum point load and capped and stowed electrical cables that are substantiated for no electrical load (no electrical power applied to these electrical cables). Future installations that would power the provisional wiring approved by this STC would require FAA approval separate from this STC and would address: lightning protection in accordance with (See Continuation Sheet, Page 4 of 4) Installation of structural fitting provisions and/or electrical cable provisions in accordance with SPEC Inc. Master Drawing List, Doc. No. 200-0501, Revision F, dated April 17, 2024, or later FAA approved revision and SPEC Inc.

General Arrangement, Structural and Electrical Modification, Drawing No. 200-0610, Revision H, dated April 16, 2024, or later FAA approved revision.

Number: SA00728DE

(Continuation Sheet) Number: SA00728DE Date Amended: May 3, 2024 Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48, the certification basis for the Textron Aviation Inc. B300 and B300C aircraft is as follows:

a. The type certification basis for parts not changed or affected by the change is shown on TCDS A24CE.

b. The modification certification basis for parts changed or affected by the change since the reference date of application is based upon Part 23 as amended by Amendment 23-59 as follows:

Applicable regulations at the latest amendment 23-0 through 23-59 § 23.301(a)(b)(c) § 23.305 § 23.561(b)(3) § 23.571(c) § 23.572(a)(b) (applicable to altered structure) § 23.573(b) § 23.574(a) § 23.575 § 23.607 § 23.611 § 23.613 § 23.867 § 23.1309(a)(4)(b)(e) § 23.1351(b) § 23.1359(c) § 23.1431(a)(b) § 36.1 § 36.9 § 36.501 § 36.1501 § 36.1581

Regulations at an intermediate level None Regulations at the amendment level in TCDS A24CE (amendment 23-0 through 23-34) § 23.1 § 23.303 § 23.307(a) § 23.572(b) (applicable to baseline structure § 23.601 § 23.603 § 23.605(a) § 23.609 § 23.615 § 23.619 § 23.623 § 23.625 § 23.627 § 23.641 § 23.787(a)(b) § 23.807(a)(b)(1)(3)(4)(d)(3)(4) § 23.815 § 23.851(a) § 23.853(d)(3)(i)(ii)(v) § 23.863(a)(b)(d) § 23.954(a)(b)(c) § 23.955(a)(1)(2) § 23.959(a) § 23.963(a)(b)(c)(e) § 23.965(a) § 23.967(a)(4)(i) § 23.969 § 23.999(a) § 23.1301(a)(b)(c) § 23.1357(a)(1)(2)(b)(c)(1)(2)

(d)(e)(1)(2) § 23.1365(a)(b) § 23.1367(a)(b) § 23.1411(a)(b)(1) § 23.1415(a)(d) § 23.1529 § 23.1541(a)(2)(b)(1)(2) § 23.1557(a)(d)(e)

23.1561

(Continuation Sheet) Number: SA00728DE Date Amended: May 3, 2024

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2) (continued) 14 CFR 23.867, circuit breaker protection and wire electrical capacity. Future installation of additional equipment would require FAA approval separate from this STC for each specific installation, which would address effects on: aircraft performance, stability and control, external air loads, flutter, noise, icing, lightning protection, interior compliance/egress, electrical loads and electromagnetic interference (EMI)/electromagnetic compatibility (EMC) (including the provisional wiring).

3) Instructions for Continued Airworthiness, SPEC Inc. Document number 200-0403, Revision A, dated May 11, 2011, FAA accepted May 13, 2011, or later FAA accepted revision is required for 200-0610-01/-02 Structural and Electrical installation. Instructions for Continued Airworthiness, SPEC Inc. Document number 200-0404, Revision A, dated August 13, 2014, FAA accepted August 29, 2014 or later FAA accepted revision is required for 200-0610-03 Hardpoint Installation. Instructions for Continued Airworthiness, SPEC Inc. Document number 200-0403, Revision C, dated October 8. 2015, FAA accepted October 15, 2015, or later FAA accepted revision is required for 200-0610-04, configuration of structural and electrical provisions. Instructions for Continued Airworthiness, SPEC Inc. Document number 200-0403, Revision D, dated September 5, 2017, FAA accepted September 22, 2017, or later FAA accepted revision is required for 200-0610-05, configuration of structural and electrical provisions. Instructions for Continued Airworthiness, SPEC Inc. Document number 200-0404, Revision B, dated February 14, 2024, FAA accepted May 3, 2024 or later FAA accepted revision is required for 200-0610-06 Hardpoint Installation. These Instructions for Continued Airworthiness must be available in accordance with 14 CFR 21.50(b).

4) It has been substantiated that this modification (provisions only) is No Acoustical Change in accordance with 14 CFR 21.93(b).

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

6) 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.

7) A copy of the certificate must be maintained as a part of the permanent records of the aircraft.