STC SA04496NY

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA04496NY This certificate issued to: SMR Acquisition, LLC dba SMR Technologies, Inc.

93 Nettie Fenwick Rd.

Fenwick, WV 26202 23 _ of Federal Aviation Regulations Original Product Type Certificate Number: A63EU Make: GROB Aircraft SE Description of Type Design Change: Model: G 520 Replacement of certain Goodrich pneumatic de-ice boots in accordance with SMR Technologies, Inc. installation instructions as listed on Drawing SMR5227 Revision 2, dated June 9, 2025, and detail design as listed on MDL-0094, Revision B, dated June 9, 2025, or later FAA approved revisions. Approval of this change in type design extends to the models listed above with previously approved de-ice boots.

This STC is applicable to all serial numbers for this GROB Aircraft SE G 520.

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

2. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

(Continued on page 3)

Date of Application: 03/20/2025 Date Reissued:

Date of Issuance: 06/12/2025 Date Amended:

Dewayne Bowles Title: ODA Administrator SMR Technologies, Inc. ODA-810299-NE

or propeller.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA04496NY Effective Date: 06/12/2025

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04496NY Effective Date: 06/12/2025 Limitations and Conditions: (cont):

3. 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.

4. Supplemental instructions for continued airworthiness, SMR report 25-33-011, are required with this installation.

5. When replacing urethane part numbers with neoprene part numbers, the installation of neoprene part numbers must be in a symmetrical pairs configuration per SMR Drawing SMR5227 and Supplemental ICA 25-33-011. The intermix of neoprene and urethane part numbers is prohibited.

6. Supplemental ICA 25-33-011 should be incorporated into the operator's maintenance program, as applicable.

Certification Basis:

Based on 14 CFR 21.115 and 21.101, and the FAA policy for changes that are not significant in FAA Order 8110.48, the certification basis for this modification are as follows:

a. The type certification basis for the GROB Aircraft SE G 520 aircraft are specified under TCDS A63EU for parts not changed or not affected by the change.

b. The type certification basis for the GROB Aircraft SE G 520 aircraft are specified under TCDS A63EU for parts changed or affected by the change with the following 14 CFR exceptions: None ------END-----

or propeller.