AD 47-42-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-6 | DOUGLAS DC-6 Aircraft |
| aircraft | The Boeing Company | DC-6A | DOUGLAS DC-6 Aircraft |
| aircraft | The Boeing Company | DC-6B | DOUGLAS DC-6 Aircraft |
Unsafe Condition
Cracks in the center spar web along the lower row of rivets attaching the spar web to the leg of the upper spar cap between Stations 167 and 184.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the center spar web between Stations 167 and 184 for cracks along the lower rivet row. If cracks are found or fuel leaks occur due to cracks, install a doubler per Douglas Drawing 5356664. Remove fuel tank inspection opening if needed for proper inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At each 300 hours (or at each 150 hours for non-air-carrier operations).
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Affected Aircraft
Douglas DC-6, DC-6A, DC-6B aircraft with specified serial numbers: Douglas 43061; AAL 42854-42865, 42879-42880, 42882-42896, 43035-43044; UAL 42866-42875, 43000-43024; Panagra 42876-42878; National 43055-43058; Sabena 43062-43064; Braniff 43105, 43106; KLM 43111-43112; AAF 42881.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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