AD 66-18-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC3-G102 | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3-G102A | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3-G103A | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3-G202A | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3A-S1C3G | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3A-S1CG | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3A-S4C4G | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3A-SC3G | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3A-SCG | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
| aircraft | The Boeing Company | DC3C-R-1830-90C | Airworthiness Directives; DOUGLAS All DC-3, C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D (execpt R4D-8) |
Unsafe Condition
Cracks between the attach bolt holes in the wing lower attach angles and doublers of the outer wing and center section between the front and rear spars could result in structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect wing lower attach angles for cracks between bolt holes using a 4-power magnifying glass. Replace outer wing lower surface doublers and attach angles with new materials per Douglas Service Bulletin DC-3 No. 262. Conduct recurring inspections at specified intervals and replace cracked parts before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 50 hours' time in service after March 15, 1963
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC-3 series aircraft including Military Type C-41, C-41A, C-47, C-47A, C-47B, C-48, C-48A, C-49, C-49A, C-49B, C-49C, C-49D, C-49J, C-49K, C-50, C-50A, C-50B, C-50C, C-50D, C-51, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, C-117A and R4D series except R4D-8 aircraft.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.