AD 71-14-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-28-140 | Airworthiness Directives; Piper Models PA 28-140, PA 28-150, PA-28-160, PA-28-180, and PA-28-235 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-28-150 | Airworthiness Directives; Piper Models PA 28-140, PA 28-150, PA-28-160, PA-28-180, and PA-28-235 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-28-160 | Airworthiness Directives; Piper Models PA 28-140, PA 28-150, PA-28-160, PA-28-180, and PA-28-235 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-28-180 | Airworthiness Directives; Piper Models PA 28-140, PA 28-150, PA-28-160, PA-28-180, and PA-28-235 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-28-235 | Airworthiness Directives; Piper Models PA 28-140, PA 28-150, PA-28-160, PA-28-180, and PA-28-235 Airplanes |
Unsafe Condition
Possible inadvertent grounding of magnetos due to uninsulated terminals on the magneto filters on the aft side of the firewall.
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Required Actions
Visually inspect the two terminals of the magneto filters. If terminals are not insulated, install electrical nipples Piper P/N 23969-02 in accordance with Piper Service Bulletin 313 or FAA approved equivalent.
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Compliance Time
within the next 50 hours' time in service after the effective date of this airworthiness directive unless already accomplished
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Affected Aircraft
Piper Models PA 28-140 (Serial Numbers 28-20001 through 28-23042), PA 28-150/-160/-180 (Serial Numbers 28-1 through 28-4033), and PA 28-235 (Serial Numbers 28-10001 through 28-10718)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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