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FAA
Federal Aviation Administration Department of Transportation
Aviation Safety
AIRWORTHINESS DIRECTIVE
Generated by Aircraft-logs.com — March 22, 2026

AD 47-33-02 ACTIVE

Cowl Flap Hydraulic Lines
Key Information
AD Number 47-33-02 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

47-33-02\tDOUGLAS: (Was Mandatory Note 14 of AD-618-3, Supplement 2; and Mandatory Note 15 of AD-669-3, Supplement 2.) Applies to All DC3 Series Aircraft. \n\nTo be accomplished not later than the first engine change after September 1, 1947, but in any event not later than December 1, 1947. \n\nIn order to preclude cowl flap hydraulic line failures and possible subsequent fires, replace grommets and lines forward of the firewall with AN 833-4 elbows and AN 924-4 nuts, or equivalent, and new fire resistant flexible hose assemblies of proper length.

AD 47-33-02 — Cowl Flap Hydraulic Lines
Printed from Aircraft-logs.com — 03/22/2026