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

AD 47-51-15 ACTIVE

Brake Relining
Key Information
AD Number 47-51-15 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) DC-6 DC-6A DC-6B
Regulatory Text

47-51-15 DOUGLAS: Applies to DC-6 Serial Numbers 42854 Through 42880; 42882 Through 42888; 42890; and 42891; 43000 Through 43003; 43005 Through 43009; 43055; and 43056. \n\nTo be accomplished not later than next No. 3 inspection. \n\nIn order to prevent malfunctioning of the brakes, the original Raybestos brake lining, P/N 9520535 must be replaced with Goodyear BL-56 lining, P/N 9521091. This new lining is identified with two yellow dots. \n\n(Douglas Service Bulletin DC-6 No. 1 covers this same subject.)

AD 47-51-15 — Brake Relining
Printed from Aircraft-logs.com — 03/22/2026