AD 67-09-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Allied Ag Cat Productions, Inc. | G-164 | Airworthiness Directives; Grumman Models G-164 and G-164A Airplanes |
| aircraft | Allied Ag Cat Productions, Inc. | G-164A | Airworthiness Directives; Grumman Models G-164 and G-164A Airplanes |
Unsafe Condition
Fouling of the control stick by the surface control lock and inadvertent locking of the right toe brake master cylinder during flight maneuvering.
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Required Actions
Install a tension spring and two 'S' hooks in accordance with Grumman drawing A1521, Revision B, Sheet 2 or equivalent approved by the FAA. Modify the parking brake and stick control lock installation per Grumman AG-CAT Service Bulletin No. 39 or equivalent approved by the FAA. Compliance time for the second modification may be extended with FAA approval.
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Compliance Time
Within the next 25 hours' time in service after April 7, 1966 (for Model G-164, S/N 301-400) and within the next 25 hours' time in service after March 24, 1967 (for all applicable airplanes under section (b)).
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Affected Aircraft
Grumman Models G-164 and G-164A Restricted Category Airplanes, Serial Numbers 301 through 450, and Serial Numbers below 301 modified with parking brake installation and Stick Control Lock Kit P/N A1521-301K.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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