AD 46-27-01
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
Cracks may develop in the spar webs of the wing integral tank area which might not be detected, leading to fuel leakage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect immediately the spar webs in the wing integral tank area to check if Douglas Service Bulletin C-54-205 reinforcements are installed. If not installed, add reinforcements by November 1, 1946. Pending rework, operate only if daily inspections confirm no leakage and fuel is carried in outer wing tanks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than November 1, 1946
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.