AD 46-23-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Univair Aircraft Corporation | 415-C | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-CD | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-D | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
Unsafe Condition
The original muffler on ERCO Model 415-C, -CD, and -D aircraft serial numbers 113 to 362 may fail, leading to potential exhaust system leaks and reduced engine performance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the original muffler with the new muffler Erco P/N 145-40517 within the next 50 hours of operation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within next 50 hours of operation
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Univair Aircraft Corporation Model 415-C, -CD, and -D aircraft with serial numbers 113 to 362, inclusive.
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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