AD 73-09-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-22 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-108 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-135 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-150 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-160 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22S-135 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22S-150 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22S-160 | Airworthiness Directives; Piper Models PA-22-150, PA-22S-150, PA-22-160, and PA-22S-160 Aircraft |
Unsafe Condition
Power interruption and acceleration hangup resulting from abrupt throttle movement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Attach an operating limitation placard near the throttle with 1/8 inch minimum lettering stating 'DO NOT OPEN THROTTLE RAPIDLY - (IDLE TO FULL THROTTLE, 2 SECONDS MINIMUM)'
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours in service after the effective date of this AD
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Affected Aircraft
Piper Models PA-22-150, PA-22S-150, PA-22-160, PA-22S-160 equipped with Lycoming O-320 series engines and Marvel Schebler Carburetors Model MA-4-SPA, Part Numbers 10-3678-11, 10-3678-12, 10-3678-32, and other PA-22 type aircraft modified to these engine/carburetor configurations.
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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