Commonwealth legislation

AD/EMB-110/11 - Elevator Trim Tab and Tail Cone Clearance - Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This airworthiness directive requires operators of Embraer EMB‑110 aircraft (S/N 110001–110226) to inspect the clearance between the elevator trim tab and the tail cone and to modify the trim tab if clearances are below the specified minimums (≥5 mm at the hinge line; ≥10 mm at the trailing edge). A 5 mm rivet edge distance must be maintained; contact the manufacturer if the clearance cannot be achieved (Requirement; Notes 1–2). Inspections and any modifications must be done within 120 hours time in service after 31 October 1980 and thereafter when the trim tab or tail cone is replaced (Compliance). Operators bear the inspection and modification costs; the manufacturer may provide modification schemes (Note 2).

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AD/EMB-110/11 - Elevator Trim Tab and Tail Cone Clearance - Inspection

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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-110/11 Elevator Trim Tab and Tail Cone Clearance - Inspection

Applicability: All model EMB-110 with S/Nos. 110001 to 110226.

10/80

Requirement: 1. Inspect for the existing clearance between the elevator trim tab and the tail cone in all possible deflections of the elevator and trim tab. This clearance must be 5mm or more at the hinge line and 10mm or more at the trim tab trailing edge.

If the clearance is less than those noted in paragraph 1. Modify the trim tab to obtain the necessary clearances.

Note 1: Rivet edge distance of 5mm must be maintained during modification.

Note 2: If clearances noted cannot be obtained and rivet edge distance maintained, contact manufacturer for suitable modification scheme.

Note 3: Brazilian AD 80-07-03 refers.

Compliance: Within 120 hours time in service after 31 October 1980 and there- after at any time the trim tab or tail cone is replaced.

Background: It is possible for interference to occur between the elevator trim tab and the tail cone.

Source text

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