AD 46-23-02
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 flexible hose in the engine breather line may have an amber inner liner, which is susceptible to contraction and possible clogging.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the flexible hose in the engine breather line immediately. Replace the hose if it shows evidence of clogging or after a maximum of 25 flight hours if the inner liner is amber but still in satisfactory condition. Use hose supplied by Erco or equivalent such as AN 884 or AN 878.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
immediately
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
ERCO Model 415-C, -CD, and -D aircraft with serial numbers 113 to 263, inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Engine breather line hose
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-23-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-23-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft Subject: Engine breather line hose Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-23-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-23-02 SUBJECT HEADING: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-23-02 ERCO: (Was Mandatory Note 5 of AD-718-6.) Applies Only to 415-C, -CD and -D Aircraft Serial Numbers 113 to 263, Inclusive. The flexible hose in the engine breather line should be inspected immediately. If the inner liner of this hose is an amber color, it is susceptible to contraction and possible clogging. Hose which shows evidence of clogging should be replaced at once by hose supplied by Erco or by equivalent hose such as AN 884 or AN 878. If hose has an amber lining but is still in satisfactory condition, it may be continued in service for a maximum of 25 hours, whereupon it must be replaced by satisfactory hose as described above. (Erco Service Department Memorandum No. 11 dated February 1, 1946, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-23-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-23-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft Subject: Engine breather line hose Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-23-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-23-02 SUBJECT HEADING: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-23-02 ERCO: (Was Mandatory Note 5 of AD-718-6.) Applies Only to 415-C, -CD and -D Aircraft Serial Numbers 113 to 263, Inclusive. The flexible hose in the engine breather line should be inspected immediately. If the inner liner of this hose is an amber color, it is susceptible to contraction and possible clogging. Hose which shows evidence of clogging should be replaced at once by hose supplied by Erco or by equivalent hose such as AN 884 or AN 878. If hose has an amber lining but is still in satisfactory condition, it may be continued in service for a maximum of 25 hours, whereupon it must be replaced by satisfactory hose as described above. (Erco Service Department Memorandum No. 11 dated February 1, 1946, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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