AD 80-22-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-6 | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
| aircraft | The Boeing Company | DC-6A | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
| aircraft | The Boeing Company | DC-6B | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
| aircraft | The Boeing Company | Navy R6D-1 | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
| aircraft | The Boeing Company | Navy R6D-1Z | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
| aircraft | The Boeing Company | USAF C-118A | Airworthiness Directives; MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B Airplanes including Military Models R6D and C-118 |
Unsafe Condition
Failure of the nose landing gear upper torque link P/N 8488A-46-1 which could result in nose gear collapse due to cracks at the shoulder recess corner radius.
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Required Actions
Inspect the nose landing gear upper torque link P/N 8488A-46-1 for cracks at the shoulder recess corner radius using dye penetrant methods. If cracks are found, replace with a serviceable part of the same part number with ongoing inspections, rework per specified service bulletins with inspections, or replace with improved P/N 8488A-46A-1. If no cracks, continue inspections at intervals not exceeding 300 hours' time in service.
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Compliance Time
Within 100 hours' time in service from the effective date unless already accomplished in the last 200 hours' time in service and thereafter at intervals not to exceed 300 hours' time in service since the last such inspection.
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Affected Aircraft
MCDONNELL DOUGLAS DC-6, DC-6A, DC-6B airplanes including military models R6D-1, R6D-1Z, and USAF C-118A incorporating nose landing gear upper torque link assembly P/N 8488A-46.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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