Commonwealth legislation

AD/EMB-110/50 - Automatic Propeller Feathering System

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

Requires all Embraer EMB-110 owners/operators to inspect the automatic propeller feathering control/test switch per Embraer Service Bulletin 110-61-0032, to be done within 50 flight hours after 17 Nov 1995.

Issued because a reported malfunction traced to intermittent soldered-pin electrical connections could disable automatic feathering; operators bear inspection and repair costs and may face short-term downtime and concentrated maintenance demand.

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Current sections

Direct links to the current provisions in AD/EMB-110/50 - Automatic Propeller Feathering System.

AD/EMB-110/50 - Automatic Propeller Feathering System

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Embraer EMB-110 (Bandeirante) Series Aeroplanes

AD/EMB-110/50 Automatic Propeller Feathering System 1/96 DM

Applicability: This Directive is applicable to all EMB-110 aircraft.

Requirement: Inspect the control and test switch of the automatic propeller feathering system in accordance with Embraer Service Bulletin 110-61-0032 dated 6 October 1995.

Note: CTA (Brazil) AD 95-10-01 Amdt 39-749 refers.

Compliance: Unless previously accomplished, then within 50 hours time in service after 17 November 1995.

Background: A report was received of a malfunction of the automatic feathering mechanism of the EMB-110 propeller. Investigations carried out revealed a hidden failure mode not checked by the preflight feathering test. This failure mode was due to a loss of electrical connection between the control and test switch pins and wires soldered to them. Action required by this Directive is intended to provide early detection of this anomaly.

Source text

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

1 AD/EMB-110/50 - Automatic Propeller Feathering System