AD 75-16-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-28-151 | Airworthiness Directives; Piper Model PA-28-151 Airplanes |
Unsafe Condition
Over-travel of the carburetor air box valve could occur, leading to potential failure of the carburetor heat system.
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Required Actions
Inspect and modify the carburetor air box by installing two plates (Piper P/N 35646002) secured with rivets, replacing the gasket (Piper P/N 73451-07), reinstalling components with specified hardware, and ensuring proper cable tension. Follow Piper Service Bulletin 474 or an approved alternative method.
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Compliance Time
within the next 50 hours' time in service or at the next scheduled inspection, whichever occurs first, after the effective date of this AD
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Affected Aircraft
Piper Model PA-28-151 airplanes, serial numbers 28-7415001 through 28-7515425
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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