Commonwealth legislation

AD/B737/323 - MLG Support Beam

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Boeing 737-100, -200, -200C, -300, -400 and -500 series aeroplanes to carry out the inspections and corrective actions set out in FAA AD 2008-08-10 (and the referenced Boeing Service Bulletins) to find and fix fatigue and stress‑corrosion cracking in the main landing‑gear outboard stabilising fitting and its attaching bolts. It matters to aircraft owners/operators because they must fund and schedule the inspections and any repairs, and compliance is mandatory from 5 June 2008 under the Civil Aviation Safety Authority delegate.

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Current sections

Direct links to the current provisions in AD/B737/323 - MLG Support Beam.

Boeing 737 Series Aeroplanes

AD/B737/323	MLG Support Beam	6/2008

Applicability:	Model 737-100, -200, -200C, -300, -400, and -500 series aircraft.
Requirement:	Action in accordance with the technical requirements of FAA AD 2008-08-10 Amdt 39-15462.Note: Boeing Service Bulletins 737-57A1266 Revision 1, and 737-57-1052Revision 4, or later FAA approved revision, refer.
Compliance:	As specified in the Requirement document, with a revised effective date of5 June 2008.
	This Airworthiness Directive becomes effective on 5 June 2008.
Background:	The FAA received reports of fatigue cracking of the outboard stabilising fitting and stress corrosion cracking of the bolts attaching the fitting to the wing rear spar. Such cracking, unless detected and corrected, could result in disconnection of the main landing gear actuator from the rear spar and support beam, consequent damage to the hydraulic system with possible loss of the “A” and “B” hydraulic systems, and damage or jamming of the flight control cables.

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David Villiers
Delegate of the Civil Aviation Safety Authority

21 April 2008

AD/B737/323

MLG Support Beam

6/2008

Source text

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

Boeing 737 Series Aeroplanes Boeing 737 Series Aeroplanes

Boeing 737 Series Aeroplanes

AD/B737/323	MLG Support Beam	6/2008

Applicability:	Model 737-100, -200, -200C, -300, -400, and -500 series aircraft.
Requirement:	Action in accordance with the technical requirements of FAA AD 2008-08-10 Amdt 39-15462.Note: Boeing Service Bulletins 737-57A1266 Revision 1, and 737-57-1052Revision 4, or later FAA approved revision, refer.
Compliance:	As specified in the Requirement document, with a revised effective date of5 June 2008.
	This Airworthiness Directive becomes effective on 5 June 2008.
Background:	The FAA received reports of fatigue cracking of the outboard stabilising fitting and stress corrosion cracking of the bolts attaching the fitting to the wing rear spar. Such cracking, unless detected and corrected, could result in disconnection of the main landing gear actuator from the rear spar and support beam, consequent damage to the hydraulic system with possible loss of the “A” and “B” hydraulic systems, and damage or jamming of the flight control cables.

AD/B737/323 - MLG Support Beam

Plain English Summary

Deep dive

Current sections

Boeing 737 Series Aeroplanes

Boeing 737 Series Aeroplanes

AD/B737/323

AD/B737/323

MLG Support Beam

MLG Support Beam

6/2008

6/2008

Source text

Boeing 737 Series Aeroplanes Boeing 737 Series Aeroplanes

Boeing 737 Series Aeroplanes

AD/B737/323 AD/B737/323

AD/B737/323

MLG Support Beam MLG Support Beam

MLG Support Beam

6/2008 6/2008

6/2008