Commonwealth legislation

AD/B737/194 - Keel Beam Structure

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

Requires operators of Boeing 737-600, -700 and -800 (line numbers 1–321) to carry out inspections and corrective actions set out in FAA AD 2000-08-08 (and Boeing Alert Service Bulletin 737-57-1253) to prevent keel-beam failure after reports of severed rear-spar stiffeners. CASA enforces compliance from 31 October 2002; affected operators pay for inspections/repairs and must follow the technical instructions in the Requirement document. The directive changes aircraft maintenance obligations and sets a mandatory compliance timetable enforced by the CASA delegate.

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Current sections

Direct links to the current provisions in AD/B737/194 - Keel Beam Structure.

AIRWORTHINESS DIRECTIVE

View image in the official source

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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.

Boeing 737 Series Aeroplanes

AD/B737/194 Keel Beam Structure 11/2002

Applicability: Model 737-600, -700, and -800 series aircraft, line numbers 1 through 321. Requirement: Action in accordance with the technical requirements of FAA AD 2000-08-08 Amdt

39-11694.

Note: Boeing Alert Service Bulletin 737-57-1253 refers.

Compliance: As specified in the Requirement document, with a revised effective date of 31 October 2002.

This Airworthiness Directive becomes effective on 31 October 2002.

Background: The FAA received a report of severed rear spar stiffeners of the centre wing, which resulted in cracking in the adjacent keel beam structure. This Directive requires certain actions to prevent failure of the keel beam structure.

Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 12 September 2002

View image in the official source

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.

Boeing 737 Series Aeroplanes