Commonwealth legislation

AD/AC-SNOW/25 - MLG to Fuselage Attach Bolts

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires owners/operators to replace any main landing gear (MLG) attach bolt that has been drilled for greasing with an undrilled, Authority‑approved bolt (P/N AN10‑33, NAS 6610‑42D or approved alternative), following Ayres SB‑AG‑42R1. (Applicability; Requirement.) The replacement must be completed within 100 hours’ time in service after the AD’s effective date to address cracked drilled bolts that could cause gear collapse and fuel tank rupture. (Compliance; Background.)

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Current sections

Direct links to the current provisions in AD/AC-SNOW/25 - MLG to Fuselage Attach Bolts.

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 aircraft or 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/AC-SNOW/25 MLG to Fuselage Attach Bol

AD/AC-SNOW/25 MLG to Fuselage Attach Bolts 5/2000

Applicability: All models, all S/nos, with any MLG attach bolt installed which is drilled for greasing.

Requirement: Replace the any MLG bolt drilled for greasing with an undrilled bolt P/N AN10-33, or NAS 6610-42D, or other bolt approved by the Authority; in accordance with Ayres SB No. SB-AG-42R1 dated 28 September1999.

Note: FAA AD 2000-05-23 refers, but references the initial issue of the Requirement document.

Compliance: Within 100 hours’ time in service after the effective date of this Directive.

This Airworthiness Directive becomes effective on 18 May 2000.

Background: Bolts modified by drilling to enable better lubrication of the MLG attachment have been found cracked. This could lead to main landing gear collapse and possible rupture of a fuel tank.

View image in the official source

Bernard Malcolm Hole

Delegate of the Civil Aviation Safety Authority 7 April 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 19 April 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 aircraft or 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/AC-SNOW/25 MLG to Fuselage Attach Bol AD/AC-SNOW/25 MLG to Fuselage Attach Bolts 5/2000

AD/AC-SNOW/25 MLG to Fuselage Attach Bolts 5/2000

Applicability: All models, all S/nos, with any MLG attach bolt installed which is drilled for greasing.

Note: FAA AD 2000-05-23 refers, but references the initial issue of the Requirement document.

Compliance: Within 100 hours’ time in service after the effective date of this Directive.

This Airworthiness Directive becomes effective on 18 May 2000.

Background: Bolts modified by drilling to enable better lubrication of the MLG attachment have been found cracked. This could lead to main landing gear collapse and possible rupture of a fuel tank.

Bernard Malcolm Hole

Delegate of the Civil Aviation Safety Authority 7 April 2000

The above AD is notified in the Commonwealth of Australia Gazette on 19 April 2000.