AD 68-26-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-8-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-33 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-41 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-42 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-43 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
| aircraft | The Boeing Company | DC-8-51 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 and DC-8F Airplanes |
Unsafe Condition
Fatigue failures in the main landing gear forward bogie beam 'critical area' due to localized high loads during ground operations and cracking in the swivel pin lower lugs from corrosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Rework Bogie Beam Assemblies per specified McDonnell Douglas letters, install Kit A or E, and lubricate swivel joints. Inspections and rework must follow specific landing intervals and material removal depths. Replacement with approved parts or reworked assemblies is required if limits are exceeded.
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Compliance Time
Within the next 400 landings after February 1, 1969, or before accumulating 4,000 landings, whichever is later. Subsequent rework intervals depend on part number and prior rework history.
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Affected Aircraft
McDonnell Douglas DC-8 and DC-8F models (DC-8-11, -12, -21, -31, -32, -33, -41, -42, -43, -51, etc.) with main landing gear forward bogie beam assemblies P/N 5760590, 5760602, or 5719123.
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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