Commonwealth legislation

AD/DC4/31 - Propeller Feathering System - Modification

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires all Douglas DC‑4 operators to replace flexible hoses in the propeller feathering lines forward of the firewall with specified, more fire‑resistant hose assemblies. It excludes hoses forward of the cylinders that connect to the governor.

It affects aircraft owners/operators and maintenance organisations (who pay for parts, labour and downtime), and matters for fire safety and maintaining airworthiness; approved part numbers are named in the AD.

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Current sections

Direct links to the current provisions in AD/DC4/31 - Propeller Feathering System - Modification.

AD/DC4/31 - Propeller Feathering System - Modification

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Douglas DC4 Series Aeroplanes

AD/DC4/31 Propeller Feathering System - Modification NK

Applicability: All models.

Requirement: Replace the existing flexible hose components of the propeller feathering lines forward of the firewall with hose assemblies having greater fire resistance. The following hose assemblies are acceptable for this application:

Resistoflex P/N SSFR-3800-10 Aeroquip P/N 304000 (680-10S with 304 sleeves over end fittings) Aeroquip P/N 309009-10S or -8S; or

Note: Flexible hose assemblies located forward of the cylinders and connecting to the governor are not affected by this Order.

FAA AD 55-15-3; or ANO 105.1.16.2.5.31.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.