# AD 82-07-04: Fuel Shutoff Valve Modification - Type: Airworthiness directive - Status: Historical - Products: Allied Ag Cat Productions G-164A, G-164B, G-164B-15T, G-164B-20T, G-164B-34T, G-164B (with 73 inch wing gap), G-164C, G-164D and G-164D (with 73 inch wing gap) - Effective: April 6, 1982 - Superseded by: [AD 2007-17-02](https://openairdocs.org/ad/2007-17-02) - Product type: Aircraft, Small airplane - Amendment: 39-4355 - Registered aircraft: 509 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FCB8078290DA983C86256A4E004440E6.0001 - DRS record last changed: August 7, 2025 - Page: https://openairdocs.org/ad/82-07-04 ## The airworthiness directive 82-07-04 SCHWEIZER: Amendment 39-4355. Applies to Model G-164A (S/Ns 1726A through 1730A); Model G-164B (S/N 335B through 659B); Model G-164C (S/N 1C through 44C); and Model G-164D (S/N 1D through 22D) airplanes certificated in any category. COMPLIANCE: Required as indicated, unless already accomplished. To assure a positive stop of the fuel shut-off valve at the "ON" position, within the next 100 hours time-in-service after the effective date of this AD, accomplish the following: (a) Modify the fuel shut-off valve control by installation of a new stop-plate, P/N A1552-71, in accordance with instructions in Schweizer Ag-Cat Service Bulletin No. 78 dated January 26, 1982. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) Any equivalent method of compliance with this AD, when used, must be approved by the Chief, New York Aircraft Certification Office, FAA, Eastern Region, Federal Building, JFK International Airport, Jamaica, New York 11430; telephone (212) 995-2842. This amendment becomes effective on April 6, 1982. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 1A16](https://openairdocs.org/tcds/1A16): Allied Ag Cat Productions Inc.; names 7 of 10 models: G-164B, G-164D (with 73 inch wing gap), G-164C, G-164B-20T, G-164A, G-164B-34T, G-164B-15T ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 509 (509 by airframe model, 0 by engine model) - Makers: Grumman Acft ENG Cor-Schweizer 325, Grumman 67, Schweizer 64, Gulfstream-Schweizer A/C 36, Grumman American Avn. 9, Ag-Cat 5, Grumman/Schweizer 2, Gulfstream Schweizer A/C 1 Models with the most aircraft: - [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b): 157 aircraft (airframe model) - [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a): 150 aircraft (airframe model) - [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a): 63 aircraft (airframe model) - [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b): 56 aircraft (airframe model) - [Gulfstream-Schweizer A/C GULFSTREAM AM G-164B](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b): 33 aircraft (airframe model) - [Grumman Acft ENG Cor-Schweizer G-164C](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164c): 18 aircraft (airframe model) - [Grumman American Avn. G-164B](https://openairdocs.org/model/grumman-american-avn-g-164b): 6 aircraft (airframe model) - [Ag-Cat G-164B](https://openairdocs.org/model/ag-cat-g-164b): 5 aircraft (airframe model) - [Grumman American Avn. G-164A](https://openairdocs.org/model/grumman-american-avn-g-164a): 3 aircraft (airframe model) - [Gulfstream-Schweizer A/C GULFSTREAM AM G-164D](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164d): 3 aircraft (airframe model) - [Schweizer G-164B-20T](https://openairdocs.org/model/schweizer-g-164b-20t): 3 aircraft (airframe model) - [Grumman G164C](https://openairdocs.org/model/grumman-g164c): 2 aircraft (airframe model) - [Grumman G-164B](https://openairdocs.org/model/grumman-g-164b): 2 aircraft (airframe model) - [Grumman/Schweizer G-164D](https://openairdocs.org/model/grumman-schweizer-g-164d): 2 aircraft (airframe model) - [Schweizer G164B-34T](https://openairdocs.org/model/schweizer-g164b-34t): 2 aircraft (airframe model) - [Gulfstream Schweizer A/C GULFSTREAM AM G-164C](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164c): 1 aircraft (airframe model) - [Schweizer G164A](https://openairdocs.org/model/schweizer-g164a): 1 aircraft (airframe model) - [Schweizer G-164C](https://openairdocs.org/model/schweizer-g-164c): 1 aircraft (airframe model) - [Schweizer G-164D](https://openairdocs.org/model/schweizer-g-164d): 1 aircraft (airframe model) All 20 models: https://openairdocs.org/ad/82-07-04/models.md Every aircraft: https://openairdocs.org/ad/82-07-04/aircraft.md ## Related documents - [AD 2007-17-02](https://openairdocs.org/ad/2007-17-02): Fuel shut-off valve control ยท Allied Ag Cat Productions G-164, G-164A, G-164B and 7 more. Effective Sep 18, 2007. Supersedes this AD Its text cites no advisory circulars or STCs. --- 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.