Commonwealth legislation

AD/DC4/32 - Master Ignition Switch - Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive forces removal of separate port/starboard master ignition switches on all Douglas DC‑4s, requires reworking the ignition control so no separate masters remain, permits an optional single master for all four engines, and mandates clear labelling of each engine ignition (or compliance via ANO 105.1.16.2.5.30).

It affects DC‑4 owners/operators who must modify wiring, panels and labels to reduce crew confusion and ensure continued airworthiness.

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Current sections

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AD/DC4/32 - Master Ignition Switch - 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/DC4/32 Master Ignition Switch - Modification NK

Applicability: All models.

Requirement: 1. Remove the master ignition switches from the switch boxes mounted on the header panel and modify the ignition control system so that there are no separate master ignition switches for the port and starboard pairs of engines.

Note: This Order does not prohibit the fitment of a single master ignition switch for all four engines.

Label each individual engine ignition switch so that no confusion can arise in recognising which engine is connected to the switch; or

ANO 105.1.16.2.5.30.

Source text

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