AD 46-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | DOUGLAS Model C54-DC (R5D) , C54A (R5D-1), C54B (R5D-2) and C54D-DC (R5D-3) , C54D-DC, R5D-3 Aircraft |
| aircraft | The Boeing Company | C54A-DC | DOUGLAS Model C54-DC (R5D) , C54A (R5D-1), C54B (R5D-2) and C54D-DC (R5D-3) , C54D-DC, R5D-3 Aircraft |
| aircraft | The Boeing Company | C54B-DC | DOUGLAS Model C54-DC (R5D) , C54A (R5D-1), C54B (R5D-2) and C54D-DC (R5D-3) , C54D-DC, R5D-3 Aircraft |
| aircraft | The Boeing Company | C54D-DC | DOUGLAS Model C54-DC (R5D) , C54A (R5D-1), C54B (R5D-2) and C54D-DC (R5D-3) , C54D-DC, R5D-3 Aircraft |
Unsafe Condition
The landing gear door stud shearing could prevent the landing gear from extending.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the old thin stud (Douglas Drawing No. 1167048) with the new thick stud (Douglas Drawing No. 1329227). Remove the thin stud from each landing gear door sleeve assembly (P/N 4167071), drill the existing stud hole to +.4459,-.4531 diameter, tap 1/2-20 NF-3 to a depth of 1/2 inch, install the new stud, and secure with a 0.063-inch drill rod pin 3/8-inch long.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than next engine change
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas Model C54-DC (R5D), C54A (R5D-1), C54B (R5D-2), and C54D-DC (R5D-3) airplanes built at Santa Monica (C54-DC) and Chicago up to and including C54D-DC AAF Serial Number 42-72698 and R5D-3 Navy Serial No. 56519.
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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