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.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.