AD 63-03-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 18 | LOCKHEED Models 18 and Learstar Aircraft |
Unsafe Condition
Malfunctioning of the anchor fitting securing the main landing gear drag strut to the center section due to loose bolts and elongated bolt holes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a close visual inspection within 25 landings after the effective date and every 100 landings thereafter. If movement or loose bolts are found, access the fitting by removing bolts and rivets, inspect further, and rework, modify, or replace the fitting as needed. Use new bolts or checked bolts tightened to specified torque values.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 landings after the effective date of this AD and thereafter at intervals not to exceed 100 landings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Model 18 and Learstar aircraft incorporating landing gear drag strut anchor fitting P/N 51101.
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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