AD 46-27-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54A-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54B-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54D-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54E-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54G-DC | DOUGLAS Model C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | DC-4 | DOUGLAS Model C-54 and DC-4 Aircraft |
Unsafe Condition
Cracks occurring in the nose wheel brace strut collar, P/N 5102824, in the region where the steering lugs meet the collar body.
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Required Actions
Inspect the nose wheel brace strut collar immediately and at intervals not to exceed 35 hours. If cracks are found, repair as per Douglas Service Bulletin C-54-209S dated May 31, 1946. Installation of steel brace rods per Douglas Service Bulletin C-54-209S dated August 12, 1946, is recommended but not mandatory.
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Compliance Time
immediately
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Affected Aircraft
Douglas Model C-54 and DC-4 Aircraft with nose wheel brace strut collar P/N 5102824.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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