AD 64-05-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Swift Museum Foundation, Inc. | GC-1B | Airworthiness Directives; Universal Model GC-1B Aircraft |
Unsafe Condition
Failure through internal corrosion of the upper left and right hand members of the engine mount assembly, occurring just above the weld junction with the horizontal members, which could result in loss of the engine.
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Required Actions
Inspect engine mount members for rust and/or 'pin holing' using an ice pick or equivalent tool. Drill No. 37 holes at upper and lower ends of the member to check for rust, water, or deterioration. Replace any corroded member with a new 7/8 x 0.035 inch 4130 steel member heat-treated to 85,000 p.s.i. yield, drill holes, fill with slushing compound, drain, and plug holes with drive screws.
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Compliance Time
within 30 days from the effective date of this AD and thereafter at every periodic (annual) inspection
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Affected Aircraft
All Model (Globe) GC-1B Aircraft and their conversions with Standard Engine Mount P/N 11-710-2520.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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