AD 93-11-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-6 | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
| aircraft | The Boeing Company | DC-6A | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
| aircraft | The Boeing Company | DC-6B | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
| aircraft | The Boeing Company | Navy R6D-1 | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
| aircraft | The Boeing Company | Navy R6D-1Z | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
| aircraft | The Boeing Company | USAF C-118A | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B, C-118A, and R6D-1 Series Airplanes |
Unsafe Condition
The AD addresses the potential for structural failure of Principal Structural Elements (PSEs) due to fatigue cracking or corrosion, which could result in loss of structural integrity.
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Required Actions
Inspect each Principal Structural Element (PSE) defined in McDonnell Douglas Corporation Report No. L26-014 as per the non-destructive inspection methods in the SID. Complete initial inspections based on PSE thresholds and subsequent inspections within specified intervals. Report all inspection results to McDonnell Douglas Corporation.
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Compliance Time
Within one year after the effective date of this AD (July 22, 1993), or as specified by inspection thresholds and intervals in the SID.
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Affected Aircraft
McDonnell Douglas DC-6, DC-6A, DC-6B, C-118A, and R6D-1 series airplanes certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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