# STC SA111WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: SOUTHWESTERN AERO EXCHANGE INC., United States - Description: Installed Volpar Mark IV tricycle landing gear. - Applied: April 18, 1962 - Status date: May 1, 2006 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765) - Certificate PDF: https://openairdocs.org/files/sha256/58/0d/580df64c2dc184899880ef7c9ceef673f555d20653bb24d802e452a97b23a032 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6DFA8313CC39AE0186257195006FF805.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA111WE ## ADs that name it (4) - [AD 81-18-07](https://openairdocs.org/ad/81-18-07): Tricycle Landing Gear · Textron 3N, 3NM, 3TM and 13 more. Effective Sep 10, 1981. Named in the applicability - [AD 72-16-02 R3](https://openairdocs.org/ad/72-16-02-R3): Volpar Nose Landing Gear Fork · Volpar Mark IV tricycle landing gear (Southwestern Aero Exchange STC SA111WE or 2 others). Effective Apr 16, 1981. Named in the applicability - [AD 72-25-06](https://openairdocs.org/ad/72-25-06): Nose Gear Extension · Volpar Mark IV tricycle landing gear (Southwestern Aero Exchange STC SA111WE or 2 others). Effective Dec 9, 1972. Named in the applicability - [AD 66-30-01](https://openairdocs.org/ad/66-30-01): Static Pressure Line · Volpar Mark IV tricycle landing gear (Southwestern Aero Exchange STC SA111WE or SA4-1531). Named in the applicability ## Approved models (12) - Raytheon Aircraft Company C-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company C-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company D18C ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company D18S ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company E18S ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company E18S-9700 ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company G18S ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company H18 ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company JRB-6 ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company TC-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company TC-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Raytheon Aircraft Company TC-45J ([TCDS A-765](https://openairdocs.org/tcds/A-765)) ## 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. This Certificate issued to Southwestern Aero Exchange, Inc. 18502 East 108th Street North Owasso, OK 74055-8124 Part CAR 3 of the Civil Air Regulations. A-765 BEECH D18S, D18C, E18S, E18S-9700, G18S, H18, C-45G, C-45H, TC-45G, TC-45H, TC-45J (SNB-5), JRB-6 Description of Type Design Change: Installed Volpar Mark IV Tricycle Landing Gear in accordance with Volpar sealed Drawing No. 728. Limitations and Conditions: 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. This approval should not be extended to other specific airplanes of these models on which other previously approved modifications are incorporation unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Date of application: April 18, 1962 Date of issuance: May 3, 1962 Date reissued: July 6, 1967; Jan. 23, 1998; May 1, 2006 Date amended: May 29, 1963; Jan. 24, 1964 March 21, 1964 ( Signature) Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title) Number SA111WE Limitations and Conditions (Continued) Gross weights in excess of those shown on aircraft specification A-765 but not in excess of 9772 lbs. landing and extension of rear C.G. extremes cannot be realized unless a gross weight basic modernization kit (STC SA2-820 or SA4-1462 or equivalent) is incorporated. FAA Approved Flight Manual dated 05/03/62 required as part of the installation. Airplane Flight Supplement revision dated 04/03/64 required when rear C.G. extremes are extended. - END - ## Every issue (2) - May 1, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/58/0d/580df64c2dc184899880ef7c9ceef673f555d20653bb24d802e452a97b23a032) - February 24, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/19/cc/19cc05d121be645c06564bf78c51e3933de38cf9668220216784075eeb879d76) --- 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.