# STC SA00302BO - Type: Supplemental type certificate - Status: Current, Amended - Holder: Aerodyme Corp, United States - Description: Installation of a Lycoming IO-390-A1A6 engine and MT-Propeller MTV-12-B/188-59b propeller - Applied: December 11, 2008 - Status date: February 17, 2012 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23, Part 36 - Data sheets: [TCDS A12SO](https://openairdocs.org/tcds/A12SO) - Certificate PDF: https://openairdocs.org/files/sha256/48/bc/48bcaf406579d10528674f0a2f98973c5ee7ac0ed513c99d7c5f524068d28137 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/03B070CDC170F6B086257CA5005F53E6.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA00302BO ## ADs that name it (0) None. ## Approved models (2) - Commander Aircraft Corporation 112 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO)) - Commander Aircraft Corporation 112B ([TCDS A12SO](https://openairdocs.org/tcds/A12SO)) ## 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. 274 Valley Road South Burlington, VT 05403 Part 23 of the Federal Aviation Regulations. Original Product Type Certificate Number : A12SO Make : Commander Model : 112, 112B Installation of a Lycoming IO-390-A1A6 engine and MT-Propeller MTV-12-B/188-59b propeller, or a Lycoming IO- 390-A3A6 engine and a Hartzell HC-E3YR-1RF/F7392 propeller, in accordance with Aerodyme Corp. Model 112 210HP Engine Installation Instructions, Document Number AD1125-02, Revision 02, dated January 28, 2012, or later FAA-approved revisions. 1. Aerodyme Flight Manual Supplement for Lycoming IO-390 in Rockwell/Commander Model 112 and 112B, Document Number AD1127-02, revision 02, dated February 17, 2012, or later FAA-approved revisions, is required and must be carried in the aircraft during all flights. 2. Instructions for Continued Airworthiness (ICA), Document Number AD1126-02, Revision 02, dated January 12, 2012, or later accepted revisions, shall be made available to the operator at the time of installation. (Limitations and Conditions continued on page 3 of 4) 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. Date of application : December 11, 2008 Date of issuance : July 2, 2010 Date amended : February 17, 2012 (Signature) Robert G. Mann Manager Boston Aircraft Certification Office (Title) FAA Form 8110-2-1(10-69) Page 3 of 4 Number SA00302BO Effective Date: February 17, 2012 Limitations and Conditions Cont’d: 3. The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. 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 the Commander 112/112B engine and propeller change is as follows: a. The type certification basis for the Commander 112/112B airplanes is shown on TCDS A12SO for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of application, December 11, 2008, is based upon part 23 as amended by Amendment 23-58. 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 this modification was determined to be: Regulations at the latest amendment 23-0 through 23-58 23.29, 23.33, 23.53, 23.65, 23.71, 23.75, 23.77, 23.143, 23.201, 23.203, 23.207, 23.251, 23.361, 23.363, 23.471, 23.603, 23.605, 23.611, 23.613, 23.623, 23.865, 23.901, 23.903, 23.905, 23.907, 23.925, 23.955, 23.1047, 23.1091, 23.1093, 23.1101, 23.1103, 23.1105, 23.1107, 23.1303, 23.1305, 23.1323, 23.1521, 23. 1541, 23.1543, 23.1549, 23.1557, 23.1581, 23.1583 14 CFR Part 36 Amendment 28 FAA Form 8110-2-1(10-69) Page 4 of 4 Number SA00302BO Effective Date: February 17, 2012 Type Certificate Data Sheet: Commander TCDS A12SO is modified for this STC as follows: Model 112/112B Engine Lycoming IO-390-A1A6 Fuel 100/130 minimum grade aviation gasoline Engine Limits For all operations, 2700 rpm (210 hp) Propeller and MT Constant Speed, Model MTV-12-B Blade, Model 188-59b (small letter Propeller limits designates modifications that do not affect interchangeability of blade sets) Pitch: High 30° ± 1°, Low 11.5° ± 0.2° at Reference Radius 27.75” Diameter: Not over 74", no reduction allowed. Governor: MT P-860-4 Spinner: MT P-1005-3 Limitations: None OR Engine Lycoming IO-390-A3A6 Fuel 100/130 minimum grade aviation gasoline Engine Limits For all operations, 2700 rpm (210 hp) Propeller and Hartzell Constant Speed, Model HC-E3YR-1RF/F7392 Propeller limits Blade: Model F7392 Pitch: High 30° ± 1°, Low 11.2° ± 0.2° at Reference Radius 30” Diameter: Not over 75", not under 65" Governor: Edo-Aire 34-828-014 or Edo-Aire 34-828-014-2 Spinner: Hartzell C-3535-1(P) Limitations: None -END- ## Every issue (2) - February 17, 2012: Amended, Current. [certificate](https://openairdocs.org/files/sha256/48/bc/48bcaf406579d10528674f0a2f98973c5ee7ac0ed513c99d7c5f524068d28137) - July 2, 2010: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/33/00/33004087f30c1595b10b91358d5f8167b63de3a6f8a7d40247044106478f6ae1) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.