STC SA01586SE

(See Continuation Sheet Page 3 of 4 Pages) SA01586SE AeroMech Incorporated 1604 Hewitt Avenue; Suite 505 Everett, WA 98201 23 Regulations 2A4 Twin Commander 690C, 690D, 695, 695A, 695B Group Reduced Vertical Separation Minimum (RVSM) Airworthiness approval in accordance with Master Data List, Document AM0103-DL02-00, Revision A, dated 27 June 2023 (or later FAA approved revision).

This STC is applicable to all serial numbers for Twin Commander models 690C, 690D, 695, 695A, 695B.

March 4, 2004 August 12, 2005 09 January 2009; 08 September 2014; 11 July 2023 ODA Administrator

SA01586SE

(See Continuation Sheet Page 4 of 4 Pages) SA01586SE Description of Type Design Data

Class 1 airframes must be maintained in accordance with the Instructions for Initial and Continued Airworthiness (IICA), document AMI-IICA-TC-0451A, Revision B, dated 26 November 2008 (or later FAA accepted revision) and is a required part of this STC. The Airplane Flight Manual Supplement (AFMS) for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 1 airframes, document AMI-AFMS-TC-0448A, Revision Original, FAA approved 10 August 2005 (or later FAA approved revision) is required on board for operation of these aircraft.

Class 2 airframes must be maintained in accordance with the IICA, document, AMI-IICA-TC-0451B, Revision A, dated 26 November 2008 (or later FAA accepted revision) and is a required part of this STC. The AFMS for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 2 airframes, document AMI-AFMS-TC-0448B, Revision Original, FAA approved 10 August 2005 (or later FAA approved revision), is required on board for operation of these aircraft.

Class 3 airframes must be maintained in accordance with the IICA, document AMI-IICA-TC-0451C, Revision B, dated 26 November 2008 (or later FAA accepted revision) and is a required part of this STC. The AFMS for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 3 airframes, document AMI-AFMS-TC-0448C, Revision Original, FAA approved 10 August 2005 (or later FAA approved revision), is required on board for operation of these aircraft.

Class 4 airframes must be maintained in accordance with the IICA, document AMI-IICA-TC-0809, Revision NEW, dated 26 November 2008 (or later FAA accepted revision) and is a required part of this STC. The AFMS for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 4 airframes, document AMI-AFMS-TC-0813, Revision Original, FAA approved 05 December 2008 (or later FAA approved revision), is required on board for operation of these aircraft.

Class 5 airframes must be maintained in accordance with the IICA, document AM0103-IC01-00, Revision A, dated 15 August 2014 (or later FAA accepted revision) and is a required part of this STC. The AFMS for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 5 airframes, document AM0103-FM01-00, Revision —, FAA approved 02 September 2014 (or later FAA approved revision), is required on board for operation of these aircraft.

End SA01586SE Description of Type Design Data

Class 6 airframes must be maintained in accordance with the IICA, document AM0103-IC01-01, Revision A, dated 26 June 2023 (or later FAA accepted revision) and is a required part of this STC. The AFMS for the Twin Commander models 690C, 690D, 695, 695A, and 695B RVSM Class 6 airframes, document AM0103-FM01-01, Revision A, FAA approved 26 June 2023 (or later FAA approved revision), is required on board for operation of these aircraft.

Limitations and Conditions A copy of this certificate must be maintained as part of the permanent records of the aircraft.

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

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.

Certification Basis

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for changed aeronautical products in FAA Order 8110.48, the type certification basis for the RVSM approval is as follows:

1. The type certification basis for Twin Commander 690C, 690D, 695, 695A, 695B airplanes is shown on TCDS 2A4 for parts not changed or affected by this approval.

2. The certification basis for this change, since the reference date of application, 05 April 2023, is based on 14 CFR part 23 as amended by Amendment 23-63.

Regulations complied with through Amendment 23-63:

14 CFR §§ 23.1301(a); 23.1525; 23.1529; 23.1581(a),(b)(1),(f); 23.1583(h); 23.1585(a),(j)