AD 56-16-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Swift Museum Foundation, Inc. | GC-1A | Airworthiness Directives; Universal (Globe) Models GC-1A and GC-1B Aircraft |
| aircraft | Swift Museum Foundation, Inc. | GC-1B | Airworthiness Directives; Universal (Globe) Models GC-1A and GC-1B Aircraft |
Unsafe Condition
Failure of the aluminum alloy torque knees on E.L.I. type landing gear assemblies, which do not provide the required extension stop (P/N 64A31), leading to loss of landing gear and damage to the airplane.
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Required Actions
Replace aluminum alloy torque knees with forged steel knees (E.L.I. P/N 64A40) on aircraft not equipped with Adel main landing gear struts. Forged steel knees may be used on all landing gear units. Adel forged aluminum torque knees on Adel struts may be retained.
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Compliance Time
As soon as possible but not later than September 15, 1956.
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Affected Aircraft
Universal (Globe) Models GC-1A and GC-1B Aircraft with serial numbers higher than 196 equipped with E.L.I. type gear.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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