Commonwealth legislation

AD/EMB-110/30 Amdt 1 - Flap Control and Protection Unit - Modification

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Commonwealth

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legislative instrument

Plain English Summary

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This AD requires operators of Embraer EMB‑110 aeroplanes with a multiposition flap control switch to install a mandated hardware modification to the flap control and protection unit, per Embraer Service Bulletin 110‑27‑073 R1. It was issued after reports of inadvertent flap extension and to prevent circuit‑breaker tripping during fire‑extinguisher actuation. Operators bear the cost and must schedule the one‑time modification within the specified flight‑hour compliance windows to keep affected aircraft airworthy.

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AD/EMB-110/30 Amdt 1 - Flap Control and Protection Unit - 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 Embraer EMB-110 (Bandeirante) Series Aeroplanes

AD/EMB-110/30

Amdt 1

Flap Control and Protection Unit - Modification 4/85

Applicability: All models equipped with multiposition flap control switch. Document: Embraer SB 110-27-073 R1.

Note: Brazilian AD 84-01-01 refers.

Compliance: Part I: Within 100 hours time in service after 31 March 1984. Part II: Within 250 hours time in service after 30 April 1985.

Background: a. Inadvertent flap extension due to short circuit in flap system control and protection unit have been reported.

b. Amendment 1 includes a further modification to prevent tripping the Flap control circuit breaker when the fire extinguishing system is actuated.

Source text

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