AD 57-16-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | C54A-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | C54B-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | C54D-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | C54E-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | C54G-DC | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
| aircraft | The Boeing Company | DC-4 | Airworthiness Directives; DOUGLAS All DC-4 and C-54 Series Aircraft |
Unsafe Condition
Collapse of the nose gear shock strut due to corrosion and repeated loading over time, or fatigue in the steel piston tube, P/N 8066-4, adjacent to the nose gear fork or near the internal reinforcing sleeve.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect nose gear piston tubes (P/N 8066-4) on both inside and outside diameters for fatigue/corrosion near the internal reinforcing ring, spacer tube/liner, and top edge of the external sleeve. Replace cracked parts or rework per Douglas Service Bulletins. Remove corrosion and apply protection. Parts not reworked must be reworked by January 1, 1958, per SB No. 111.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
As soon as practical but not later than October 1, 1956, unless equivalent inspection was done within the last landing gear overhaul.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC-4 and C-54 Series aircraft, all serial numbers, with nose gear piston tubes P/N 8066-4 and nose gear fork P/N 8066A-60.
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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