AD 63-01-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Allied Ag Cat Productions, Inc. | G-164 | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164A | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-15T | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-20T | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-34T | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B (with 73 inch wing gap) | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164C | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164D | Airworthiness Directives; Grumman Model G-164 Aircraft |
| aircraft | Allied Ag Cat Productions, Inc. | G-164D (with 73 inch wing gap) | Airworthiness Directives; Grumman Model G-164 Aircraft |
Unsafe Condition
Engine mount washers (P/N S-136-1-D) installed on Model G-164 aircraft, Serial Numbers 101 through 150 inclusive, do not conform to approved Grumman specifications, which could lead to engine loss.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the engine mount washers with either Grumman-furnished washers meeting P/N S-136-1-D specifications or washers made from 2017T-T4 aluminum alloy with specific dimensions and anodizing per MIL-A-8625A.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 50 hours' time in service after the effective date of the AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Grumman Model G-164 Aircraft, Serial Numbers 101 through 150 inclusive
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Engine Mount Washers
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_63-01-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-01-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Grumman Model G-164 Aircraft Subject: Engine Mount Washers Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/05/1963 Make: Allied Ag Cat Productions, Inc. Model: G-164 | G-164A | G-164B | G-164B-15T | G-164B-20T | G-164B-34T | G-164B (with 73 inch wing gap) | G-...Show more Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 63-01-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-01-01 SUBJECT HEADING: Airworthiness Directives; Grumman Model G-164 Aircraft ACTION: SUMMARY: DATES: Effective January 5, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-01-01 GRUMMAN: Amdt. 526 Part 507 Federal Register January 5, 1963. Applies to Model G-164 Aircraft Serial Numbers 101 Through 150 Inclusive. Compliance required within the next 50 hours' time in service after the effective date of the AD. As a result of an investigation of engine mount washers (P/N S-136-1-D), which had failed, installed on Model G-164 aircraft, Serial Numbers 101 through 150 inclusive, it has been established that the engine mount washers presently installed on these aircraft do not conform to the approved Grumman specifications. To preclude the possibility of an engine loss due to these washers, accomplish either (a) or (b): (a) (1) Replace the presently installed engine mount washers, P/N S-136-1-D with washers (16 required) furnished by Grumman, that meet the detail drawing P/N S-136-1-D. (2) CAUTION: The replacement washers furnished by Grumman have the same part number as the washers presently installed on the aircraft. (Grumman Service Bulletin No. 21 covers this same subject.) (b) Replace the presently installed engine mount washers, P/N S-136-1-D with washers (16 required) made from 2017T-T4 aluminum alloy, QQ-A-351e or QQ-A-00225/5 anodized per Spec. MIL-A-8625A which have the following geometric dimensions: 0.125-inch + 0.010 thick x 1 3/4-inches + 1/64 outside diameter with a center drilled 25/64-inch + 0.008 or 0.001 diameter hole. This directive effective January 5, 1963. FOOTER:
Document Text
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AD Final Rules - DRS_63-01-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-01-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Grumman Model G-164 Aircraft Subject: Engine Mount Washers Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/05/1963 Make: Allied Ag Cat Productions, Inc. Model: G-164 | G-164A | G-164B | G-164B-15T | G-164B-20T | G-164B-34T | G-164B (with 73 inch wing gap) | G-...Show more Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 63-01-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-01-01 SUBJECT HEADING: Airworthiness Directives; Grumman Model G-164 Aircraft ACTION: SUMMARY: DATES: Effective January 5, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-01-01 GRUMMAN: Amdt. 526 Part 507 Federal Register January 5, 1963. Applies to Model G-164 Aircraft Serial Numbers 101 Through 150 Inclusive. Compliance required within the next 50 hours' time in service after the effective date of the AD. As a result of an investigation of engine mount washers (P/N S-136-1-D), which had failed, installed on Model G-164 aircraft, Serial Numbers 101 through 150 inclusive, it has been established that the engine mount washers presently installed on these aircraft do not conform to the approved Grumman specifications. To preclude the possibility of an engine loss due to these washers, accomplish either (a) or (b): (a) (1) Replace the presently installed engine mount washers, P/N S-136-1-D with washers (16 required) furnished by Grumman, that meet the detail drawing P/N S-136-1-D. (2) CAUTION: The replacement washers furnished by Grumman have the same part number as the washers presently installed on the aircraft. (Grumman Service Bulletin No. 21 covers this same subject.) (b) Replace the presently installed engine mount washers, P/N S-136-1-D with washers (16 required) made from 2017T-T4 aluminum alloy, QQ-A-351e or QQ-A-00225/5 anodized per Spec. MIL-A-8625A which have the following geometric dimensions: 0.125-inch + 0.010 thick x 1 3/4-inches + 1/64 outside diameter with a center drilled 25/64-inch + 0.008 or 0.001 diameter hole. This directive effective January 5, 1963. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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