# STC SA3326NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Air Mods NW, United States - Description: Install Sensenich Propeller model76EM8S10-0 (60-inch to 63-inch pitch, inclusive) and Gulfstream Aerospace spinner assembly, Kit P/N SK143-2. - Applied: November 6, 1985 - Status date: August 20, 2019 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA) - Certificate PDF: https://openairdocs.org/files/sha256/75/69/75695ddedd65996157c2cda29418808e2eb1897b03def4d2c693d2c6e70ea0cb - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AE1F1CF2E368F7F7862585DD003FC41E.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA3326NM ## ADs that name it (0) None. ## Approved models (1) - True Flight Holdings LLC AA-5B ([TCDS A16EA](https://openairdocs.org/tcds/A16EA)) ## 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. United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate This certificate has been reissued to replace the original certificate reported lost . Number SA3326NM This certificate, issued to Air Mods N.W. 1424 Ridge Ave Snohomish, WA 98290 Part 23 of the Federal Aviation Regulation, dated February 1, 1965 and Amendments 23-1 through 23-8. Original ProductType Certificate Number: A16EA Make: Gulfstream Aerospace Model: AA-5B Description of the Type Design Change: Install Sensenich Corp. propeller, model 76EM8S10-0 series propeller (60” to 63” pitch, inclusive) and Gulfstream Aerospace Corp. spinner assembly, Kit Part Number SK143-2 (Complete Service Kit or components equal to this assembly) in accordance with Air Mods N.W. Installation Instructions No. KD110. Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model series unless the installer determines that the relationship between this change and any other previously incorporated approved modifications , including changes in the type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this certificate and Addendum No. SA3326NM, must be maintained as part of the permanent records of the modified aircraft. 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: November 6, 1985 Date reissued: August 20, 2019 Date of issuance: February 7, 1986 Date amended: FAA FORM 8110-2 (5/14) PAGE 1 OF 4 PAGES By direction of the Administrator (Signature) Manager, Seattle ACO Branch (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of Transferee) (Address of Transferee) (Number and Street) (City, State, and ZIP Code) from (Name of Grantor) (Print or Type) (Address of Grantor) (Number and Street) (City, State, and ZIP Code) Signature of Grantor (In Ink): U.S. GPO: 1987-763-289 United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA3326NM Supplemental Type Certificate Addendum No. SA3326NM The conditions and limitation of Type Certificate Data Sheet (TCDS) Number A16EA apply except where superseded by the following: This Supplemental Type Certificate Data Sheet, which is part of STC SA336NM, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requir ements of the Federal Air Regulations. SUPPLEMENTAL TYPE CERTIFICATE HOLDER: Air Mods N.W. Model AA-5B 4PCLM (Normal/Utility Category) as modified by STC SA3326NM Engine: Lycoming 0-360-A4K (Same as TCDS A16EA) Fuel: 100/130 min. octane aviation gasoline. Capacity – 51 Gal. useable. Engine Limits: For all operations - 2700 RPM (180 HP Continuous) Propeller and Sensenich 76EM8S10-0-60 through -63 (series) Propeller Limits: Diameter: 76” Max.; 76” Min. Placards: See Note 1. C.G. Range: Same as TCDS A16EA. Maximum Gross Weight: 2400 lbs. (Same as TCDS A16EA) Instrument Markings and Oil Temperature: (Red Line) 245°F (Oil Inlet) Engine Limits: Oil Pressure: 60 to 90 PSI (Green Arc) Cylinder Head Temperature: 500°F (Red Line) (Bayonet Thermocouples) **FAA FORM 8110-2 (5/14) PAGE 3 OF 4 PAGES** United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA3326NM Supplemental Type Certificate Addendum No. SA3326NM (Continued) Note 1: Remove yellow arc from tachometer or attach placard below to instrument panel in full view of Pilot. All other placards and markings are as required by TCDS A16EA. Note 2: With described propeller installation, performance will be equal to, or better than, that given in the original FAA approved airplane flight manual, or handbook, for the Gulfstream Aerospace (Grumman American) AA-5B airplane. - END - **FAA FORM 8110-2 (5/14) PAGE 4 OF 4 PAGES** -NOTICE- Aircraft Modified with Sensich 76EM8S10-0 Series Propeller in accordance with Air Mods N.W. STC SA3326NM **YELLOW ARC NO LONGER APPLICABLE** ## Every issue (2) - August 20, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/75/69/75695ddedd65996157c2cda29418808e2eb1897b03def4d2c693d2c6e70ea0cb) - February 7, 1986: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/fe/9c/fe9ca96a6a72d4cd7128d60c57af3fbbbd2a8e1f6fc75c24f478a06052948945) --- 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.