AD 47-02-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | C54A-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | C54B-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | C54D-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | C54E-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | C54G-DC | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
| aircraft | The Boeing Company | DC-4 | DOUGLAS All C-54 Series Aircraft and DC-4 Aircraft |
Unsafe Condition
Loose or stretched clevis shear bolts in the vertical stabilizer forward attach fitting (Station 953), part numbers 4106204 and -1, which may break when checked for tightness.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the clevis shear bolts in the vertical stabilizer forward attach fitting for looseness or stretching. Rework the stabilizer attaching fittings and replace the bolts with high heat-treated bolts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than July 1, 1947
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Affected Aircraft
Douglas C-54 Series Aircraft and DC-4 Aircraft with serial numbers 42904 to 42943, inclusive; 42948 to 42952, inclusive; 42982 to 42996, inclusive; and 43065.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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