# AD 63-22-01: Spray Pump Fan Blades - Type: Airworthiness directive - Status: Current - Products: Allied Ag Cat Productions G-164, 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G-164B (with 73 inch wing gap), G-164C, G-164D and G-164D (with 73 inch wing gap) - Effective: October 25, 1963 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Registered aircraft: 564 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C5FAC89E7A52610086256A54006F964B.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/63-22-01 ## The airworthiness directive 63-22-01 GRUMMAN: Amdt. 632 Part 507 Federal Register October 25, 1963. Applies to Model G-164 Aircraft Serial Numbers 1 through 220. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent damage to fuel and oil lines from spray pump fan blades, rivet two 0.063 inch thick 2024-T3 aluminum alloy sheets approximately 6 inches wide by 18 and 28 inches long each, to the left and right lower accessory cowl panels using at least 10 and 16 AD 4 type rivets respectively. Center the plate's long dimension opposite the spray pump fan blade arc. (Grumman Aircraft Engineering Corporation Model G-164 Service Bulletin No. 23, dated June 17, 1963, pertains to this same subject and also lists the availability of Grumman armor plates P/N's A1624-111 and -113.) This directive effective October 25, 1963. ## 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 8 of 10 models: G-164B, G-164D (with 73 inch wing gap), G-164C, G-164, 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: 564 (564 by airframe model, 0 by engine model) - Makers: Grumman Acft ENG Cor-Schweizer 325, Grumman 119, Schweizer 64, Gulfstream-Schweizer A/C 36, Grumman American Avn. 12, 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) - [Grumman G-164](https://openairdocs.org/model/grumman-g-164): 52 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-164](https://openairdocs.org/model/grumman-american-avn-g-164): 3 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) All 22 models: https://openairdocs.org/ad/63-22-01/models.md Every aircraft: https://openairdocs.org/ad/63-22-01/aircraft.md 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.