AD 46-11-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | DOUGLAS Model C-54 Series Aircraft |
| aircraft | The Boeing Company | C54A-DC | DOUGLAS Model C-54 Series Aircraft |
| aircraft | The Boeing Company | C54B-DC | DOUGLAS Model C-54 Series Aircraft |
| aircraft | The Boeing Company | C54D-DC | DOUGLAS Model C-54 Series Aircraft |
| aircraft | The Boeing Company | C54E-DC | DOUGLAS Model C-54 Series Aircraft |
| aircraft | The Boeing Company | C54G-DC | DOUGLAS Model C-54 Series Aircraft |
Unsafe Condition
The copilot oxygen regulator's current position below the autopilot control handle creates a fire hazard and contamination risk if hydraulic fluid drips from the autopilot control valve onto the regulator.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Relocate the copilot oxygen regulator to Station 101 aft of the windshield defroster control plate and knob to eliminate the fire hazard and contamination risk.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than July 1, 1948
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company Model C54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C54G-DC 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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