AD 44-52-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 247-D (Army C-73) | BOEING 247-D Aircraft |
Unsafe Condition
Cracks in the outer wing panel 17SRT aluminum alloy spar chord members could lead to structural failure.
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Required Actions
Inspect immediately and every 250 flight hours thereafter the outer wing panel 17SRT spar chord members for cracks. Repair or replace cracked members in a manner satisfactory to the FAA. Installing 24ST tubing replaces the need for further inspection.
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Compliance Time
immediately
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Affected Aircraft
Boeing 247-D (Army C-73) aircraft
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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