AD 48-43-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 170 | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 170A | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 15AC | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | S15AC | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
Unsafe Condition
Piston pin plugs of the loose fit type (P/N 25262-A1) are subject to rapid and excessive wear, leading to disintegration of the piston pin plugs, piston failure, and complete engine failure due to oil stoppage from metal particles on the screen and in the system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace piston pin and plug assemblies P/N 25262-A1 with P/N 530830 (press fit plugs) as soon as possible, and inspect oil screens prior to each flight until the replacement is completed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than December 31, 1948
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Affected Aircraft
Cessna Models 170 and Aeronca Models 15AC equipped with Continental C-145-2 engines, serial numbers 3001-8-2 to 3775-8-2 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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