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FAA
Federal Aviation Administration Department of Transportation
Aviation Safety
AIRWORTHINESS DIRECTIVE
Generated by Aircraft-logs.com — March 24, 2026

AD 47-06-07 ACTIVE

Fire Extinguishing System
Key Information
AD Number 47-06-07 Status Active
Effective Date Not specified Issue Date Not specified
Docket Number Unknown Amendment N/A
Product Type ["Aircraft"] Product Subtype ["Large Airplane"]
CFR Part --- - Part 39 CFR Section N/A
Citation This information is not available.
Applicability
Manufacturer(s) The Boeing Company
Model(s) DC3-G102 DC3-G102A DC3-G103A DC3-G202A DC3A-S1C3G DC3A-S1CG DC3A-S4C4G DC3A-SC3G DC3A-SCG DC3C-R-1830-90C DC3C-S1C3G DC3C-S4C4G DC3C-SC3G DC3D-R-1830-90C
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. \n\n\tTo be accomplished not later than the next periodic inspection, or in the case of scheduled air carrier aircraft, at the next major inspection. \n\n\tCheck 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. \n\n\t(Douglas Service Bulletin DC3 No. 246 dated November 22, 1946, covers this same subject.)

AD 47-06-07 — Fire Extinguishing System
Printed from Aircraft-logs.com — 03/24/2026