AD 73-19-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Allied Ag Cat Productions, Inc. | G-164A | Airworthiness Directives; Grumman Models G-164A and G-164B |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B | Airworthiness Directives; Grumman Models G-164A and G-164B |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-15T | Airworthiness Directives; Grumman Models G-164A and G-164B |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-20T | Airworthiness Directives; Grumman Models G-164A and G-164B |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B-34T | Airworthiness Directives; Grumman Models G-164A and G-164B |
| aircraft | Allied Ag Cat Productions, Inc. | G-164B (with 73 inch wing gap) | Airworthiness Directives; Grumman Models G-164A and G-164B |
Unsafe Condition
Looseness, wear, or corrosion of the bolts attaching the Elevator Control Horn, P/N A 1841-3, to the left and right side elevators, P/N A1201-5A and A1201-4A, could result in loss of elevator control.
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Required Actions
Inspect bolts for standard torque rating, corrosion, and looseness within 25 hours in service or two weeks (whichever comes first), unless done in last 75 hours. Thereafter, repeat inspections every 100 hours or 60 days. Remove and inspect worn bolts; replace worn or corroded bolts with specified parts. Replace bolts every 1000 hours or one year. Discontinue inspections after installing Service Note No. 23 or equivalent.
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Compliance Time
Within the next 25 hours in service or two weeks, whichever occurs first, unless already accomplished within the last 75 hours in service
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Affected Aircraft
Grumman Models G-164A (S/N 1 through 1659A) and G-164B (S/N 1B through 56B), and all G-164A/B aircraft without elevator control horn modifications per Gulfstream American Service Note No. 23 or FAA-approved equivalent.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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