Commonwealth legislation

AD/F28/83 - Engine Support Filler Plates

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Fokker F28 models 1000–4000 to carry out a one‑time inspection of the engine support fittings for filler plates, remove any filler plates found, and inspect for cracking, using Fokker SB F28/53‑149. It matters because filler plates can be mistaken for structural parts and may hide cracks; the AD sets a compliance deadline and prescribes the corrective steps to detect and fix any cracking.

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Current sections

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/F28/83 Engine Support Filler Plates 2

AD/F28/83 Engine Support Filler Plates 2/2000

Applicability: F28 Models 1000 to 4000, all serial numbers.

Requirement: Inspect, and rectify where necessary, in accordance with Fokker SB F28/53-149.

Note: RLD BLA No. 1999-153 refers.

Compliance: Before 31 December 2000.

This Airworthiness Directive becomes effective on 24 February 2000.

Background: Engine support filler plates have been found at random on similar build aircraft. The filler plates do not contribute to the structural integrity of the upper or lower legs in the fittings in which they were found, and may easily be misinterpreted as being part of the fitting being inspected. As such the filler plates hamper proper inspection as called out in the SIP. This is a condition which may result in any cracking being undetected and is unsafe.

This Directive requires a one time inspection of the engine support fittings for the presence of the filler plates, the discarding of the plates if fitted, and an additional inspection for cracking.

View image in the official source

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 11 January 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 27 January 2000.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/F28/83 Engine Support Filler Plates 2 AD/F28/83 Engine Support Filler Plates 2/2000

AD/F28/83 Engine Support Filler Plates 2/2000

Applicability: F28 Models 1000 to 4000, all serial numbers.

Requirement: Inspect, and rectify where necessary, in accordance with Fokker SB F28/53-149.

Note: RLD BLA No. 1999-153 refers.

Compliance: Before 31 December 2000.

This Airworthiness Directive becomes effective on 24 February 2000.

This Directive requires a one time inspection of the engine support fittings for the presence of the filler plates, the discarding of the plates if fitted, and an additional inspection for cracking.

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 11 January 2000

The above AD is notified in the Commonwealth of Australia Gazette on 27 January 2000.