AD 2021-23-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet | Inc | Airworthiness Directives; Learjet Inc. Airplanes |
Unsafe Condition
A cracked fuel line between the engine fuel control and the engine fuel flow meter, and other failures in this area, may have resulted from vibration.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replacing the existing fuel flow meter bracket assembly with a redesigned bracket assembly and reporting information to the FAA.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Learjet Inc. Model 45 (Learjet 40), Model 45 (Learjet 45), Model 45 (Learjet 70), and Model 45 (Learjet 75) airplanes, serial numbers 45-002 through 45-005, and 45-005 and above.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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