AD 70-15-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Short Brothers PLC | SC-7 Skyvan Series 3 | Airworthiness Directives; Short Brothers and Harland Model SC-7, Series III Airplanes |
Unsafe Condition
Cracking around the drain boss of the engine plenum chamber
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate Modification No. 1034 by installing flexible drain lines between the engine plenum chamber and bottom heat shield on both engines in accordance with Shorts Bulletin No. 71-56, Revision 1, dated May 20, 1970, or a later ARB-approved issue or an FAA approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Short Brothers and Harland Model SC-7, Series III airplanes
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Engine Drain Line
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_70-15-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 70-15-12 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Short Brothers and Harland Model SC-7, Series III Airplanes Subject: Engine Drain Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/23/1970 Make: Short Brothers PLC Model: SC-7 Skyvan Series 3 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 70-15-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1043 AD NUMBER: 70-15-12 SUBJECT HEADING: Airworthiness Directives; Short Brothers and Harland Model SC-7, Series III Airplanes ACTION: SUMMARY: DATES: Effective July 23, 1970. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 70-15-12 SHORT BROTHERS AND HARLAND, LIMITED: Amdt. 39-1043. Applies to Model SC-7, Series III airplanes. To prevent cracking around the drain boss of the engine plenum chamber, within the next 25 hours' time in service after the effective date of this AD, unless already accomplished, incorporate Modification No. 1034 by installing flexible drain lines between the engine plenum chamber and bottom heat shield on both engines in accordance with Shorts Bulletin No. 71-56, Revision 1, dated May 20, 1970, or a later ARB-approved issue or an FAA approved equivalent. This amendment becomes effective July 23, 1970. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_70-15-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 70-15-12 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Short Brothers and Harland Model SC-7, Series III Airplanes Subject: Engine Drain Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/23/1970 Make: Short Brothers PLC Model: SC-7 Skyvan Series 3 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: 70-15-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1043 AD NUMBER: 70-15-12 SUBJECT HEADING: Airworthiness Directives; Short Brothers and Harland Model SC-7, Series III Airplanes ACTION: SUMMARY: DATES: Effective July 23, 1970. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 70-15-12 SHORT BROTHERS AND HARLAND, LIMITED: Amdt. 39-1043. Applies to Model SC-7, Series III airplanes. To prevent cracking around the drain boss of the engine plenum chamber, within the next 25 hours' time in service after the effective date of this AD, unless already accomplished, incorporate Modification No. 1034 by installing flexible drain lines between the engine plenum chamber and bottom heat shield on both engines in accordance with Shorts Bulletin No. 71-56, Revision 1, dated May 20, 1970, or a later ARB-approved issue or an FAA approved equivalent. This amendment becomes effective July 23, 1970. 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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