AD 47-42-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-6 | Airworthiness Directives; DOUGLAS DC-6 |
| aircraft | The Boeing Company | DC-6A | Airworthiness Directives; DOUGLAS DC-6 |
| aircraft | The Boeing Company | DC-6B | Airworthiness Directives; DOUGLAS DC-6 |
Unsafe Condition
Bearing failures in the voltage regulator blowers due to lubricant Z815.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace bearings previously packed with lubricant Z815 with new bearings containing lubricant Z801. Follow Douglas Service Bulletin DC-6 No. 43 for complete rework.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than first blower overhaul after January 1, 1948
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC-6 models with serial numbers 42854 to 42880, inclusive; 42882 to 42884, inclusive; 43000 and 43001.
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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