AD 47-47-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Martin-Marietta Corporation | 202 | Martin Model 202 Airplanes |
Unsafe Condition
Fatigue cracks in the engine accessory section rear cover near the generator mounting pad could develop, leading to generator failure or engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the engine accessory section rear cover for fatigue cracks near the generator mounting pad at first major inspection and at every short period inspection thereafter. After engine overhaul, continue the same inspection sequence.
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Compliance Time
at first major (long period) inspection and thereafter as specified below
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Affected Aircraft
Martin-Marietta Corporation Model 202 airplanes with HSP 23260 propellers with YB2H17F3-48R blades and Westinghouse D-30 generators.
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Federal Register Abstract
Engine Accessory Section Inspection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-47-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-47-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Martin Model 202 Airplanes Subject: Engine Accessory Section Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Martin-Marietta Corporation Model: 202 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-47-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-47-06 SUBJECT HEADING: Martin Model 202 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-47-06 MARTIN: (Was Service Note 2 of AD-795-1.) Applies to All Model 202 Airplanes With HSP 23260 Propellers With YB2H17F3-48R Blades and Westinghouse D-30 Generators. Compliance required at first major (long period) inspection and thereafter as specified below. Carefully inspect the engine accessory section rear cover for signs of fatigue cracks particularly near the generator mounting pad at the first long period inspection and at every short period inspection thereafter until engine overhaul. After the engine overhaul, the same inspection sequence shall be observed. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-47-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-47-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Martin Model 202 Airplanes Subject: Engine Accessory Section Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Martin-Marietta Corporation Model: 202 Product Type: Aircraft Product Subtype: Large 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: 47-47-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-47-06 SUBJECT HEADING: Martin Model 202 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-47-06 MARTIN: (Was Service Note 2 of AD-795-1.) Applies to All Model 202 Airplanes With HSP 23260 Propellers With YB2H17F3-48R Blades and Westinghouse D-30 Generators. Compliance required at first major (long period) inspection and thereafter as specified below. Carefully inspect the engine accessory section rear cover for signs of fatigue cracks particularly near the generator mounting pad at the first long period inspection and at every short period inspection thereafter until engine overhaul. After the engine overhaul, the same inspection sequence shall be observed. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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