AD 98-09-25
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 Airplanes |
Unsafe Condition
Failure of the lower spar splice plate caused by fretting and cracking could result in loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the lower spar splice plate and rework the lower spar caps in accordance with specified Piper Service Bulletin and kits. Special flight permits may be issued to operate the airplane to a location where the requirements can be accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Upon accumulating 6,000 hours TIS on the lower spar splice plate or within the next 100 hours TIS after the effective date of this AD, whichever occurs later (for Models PA-31, PA-31-300, PA-31-325); Upon accumulating 13,000 hours TIS on the lower spar splice plate or within the next 100 hours TIS after the effective date of this AD, whichever occurs later (for Model PA-31-350).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The New Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 airplanes with serial numbers: PA-31, PA-31-300, PA-31-325 (31-2 through 31-8312019); PA-31-350 (31-5001 through 31-8553002).
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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