AD 48-44-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54A-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54B-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54D-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54E-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54G-DC | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | DC-4 | Airworthiness Directives; DOUGLAS All C-54 and DC-4 Aircraft |
Unsafe Condition
Nose gear retractions malfunction due to particles of disintegrated packing clogging the present upline orifice fitting.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install an orifice fitting with a 0.063-inch diameter floating pin in a 0.090-inch diameter orifice hole, replace existing packings with synthetic and leather chevrons, and install dural packing rings and new washers as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than March 1, 1949
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas C-54 and DC-4 Series 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
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