AD 47-06-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC3-G102 | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3-G102A | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3-G103A | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3-G202A | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3A-S1C3G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3A-S1CG | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3A-S4C4G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3A-SC3G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3A-SCG | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3C-R-1830-90C | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3C-S1C3G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3C-S4C4G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3C-SC3G | DOUGLAS Model DC3 Series Aircraft |
| aircraft | The Boeing Company | DC3D-R-1830-90C | DOUGLAS Model DC3 Series Aircraft |
Unsafe Condition
Excessive wear of the aluminum conduit covering the fire extinguisher release cable causes increased trigger pull force exceeding 50 pounds in the CO2 fire extinguishing system.
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Required Actions
Check the trigger pull force on the CO2 fire extinguishing system. Replace the aluminum conduit if the trigger pull exceeds 50 pounds due to conduit wear. Repeat the check at each specified inspection period until the aluminum conduit is replaced with stainless steel conduit.
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Compliance Time
not later than the next periodic inspection, or in the case of scheduled air carrier aircraft, at the next major inspection
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Affected Aircraft
The Boeing Company DC3 Series Aircraft including models DC3-G102, DC3-G102A, DC3-G103A, DC3-G202A, DC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, and others as listed.
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Federal Register Abstract
Fire Extinguishing System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-06-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-06-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOUGLAS Model DC3 Series Aircraft Subject: Fire Extinguishing System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: DC3-G102 | DC3-G102A | DC3-G103A | DC3-G202A | DC3A-S1C3G | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3...Show more 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: 47-06-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-06-07 SUBJECT HEADING: DOUGLAS Model DC3 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-06-07 DOUGLAS: (Was Service Note 12 of AD-618-3, Supplement 1; Service Note 15 of AD-669-3, Supplement 1.) Applies to All DC3 Series Aircraft. To be accomplished not later than the next periodic inspection, or in the case of scheduled air carrier aircraft, at the next major inspection. Check the pull necessary to trip the trigger on the CO2 fire extinguishing system. If the trigger pull exceeds 50 pounds due to wear of the aluminum conduit covering the fire extinguisher release cable, this conduit must be replaced immediately. This procedure is to be repeated at each specified inspection period until such time as the aluminum cable conduit is replaced by stainless steel conduit. (Douglas Service Bulletin DC3 No. 246 dated November 22, 1946, covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_47-06-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-06-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOUGLAS Model DC3 Series Aircraft Subject: Fire Extinguishing System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: DC3-G102 | DC3-G102A | DC3-G103A | DC3-G202A | DC3A-S1C3G | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3...Show more 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: 47-06-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-06-07 SUBJECT HEADING: DOUGLAS Model DC3 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-06-07 DOUGLAS: (Was Service Note 12 of AD-618-3, Supplement 1; Service Note 15 of AD-669-3, Supplement 1.) Applies to All DC3 Series Aircraft. To be accomplished not later than the next periodic inspection, or in the case of scheduled air carrier aircraft, at the next major inspection. Check the pull necessary to trip the trigger on the CO2 fire extinguishing system. If the trigger pull exceeds 50 pounds due to wear of the aluminum conduit covering the fire extinguisher release cable, this conduit must be replaced immediately. This procedure is to be repeated at each specified inspection period until such time as the aluminum cable conduit is replaced by stainless steel conduit. (Douglas Service Bulletin DC3 No. 246 dated November 22, 1946, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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