AIRWORTHINESS DIRECTIVE
CESSNA 550 Citation II · Airworthiness Directives
Overview
This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia, specifically addressing the Cessna 550 (Citation II) series aeroplanes. The directive mandates inspections of the BFGoodrich brake stator discs on certain aircraft models to ensure safety and compliance with FAA regulations. The AD outlines the applicability, requirements, and compliance timelines necessary to mitigate risks associated with potential brake failures. It is crucial for operators of the affected aircraft to adhere to the directives to maintain airworthiness and safety standards.
- Applies to Cessna 550 and 551 aircraft, serial numbers 0002 through 0733.
- Inspection required for BFGoodrich brake assembly part numbers 2-1528-6 or 2-1530-4.
- Initial inspection must be completed within 50 landings or 90 days after 8 July 2004.
- Compliance with FAA AD 2004-09-05 is mandatory.
- The directive aims to prevent wheel lock-ups and ensure safe landing performance.
Document
Source
Originally published by services.casa.gov.au. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Airworthiness Directives
- Year
- 2004
- Pages
- 1
- File size
- 20 KB
- Publisher
- services.casa.gov.au
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In this document
Applicability
The Airworthiness Directive applies to Cessna 550 and 551 aircraft, specifically those with serial numbers ranging from 0002 to 0733. These aircraft must be equipped with BFGoodrich brake assembly part numbers 2-1528-6 or 2-1530-4.
Requirement
Operators are required to conduct inspections in accordance with FAA AD 2004-09-05 Amdt 39-13594. This inspection is necessary to determine the modification level of the brake stator discs and to take related actions if required.
Compliance
The initial inspection must be completed within 50 landings or 90 days after 8 July 2004, whichever occurs first. Further compliance times are specified in the Requirement document.
Background
The FAA has mandated this one-time inspection to prevent potential wheel lock-ups caused by cracked or broken brake stator discs. Such failures could lead to reduced directional control or braking performance during landing.
Safety notes
- Failure to comply with the inspection requirements may lead to unsafe landing conditions.
- Cracked or broken brake stator discs can jam in the brake assembly, affecting control.
Full document text
COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Page 1 of 1 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 CASR 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. Cessna 550 (Citation II) Series Aeroplanes AD/CESSNA 550/24 BFGoodrich Brake Stator Discs 7/2004 Applicability: Model 550 and 551 aircraft, serial numbers 0002 through 0733; equipped with BFGoodrich brake assembly part number 2-1528-6 or 2-1530-4. Requirement: Inspect in accordance with the requirements of FAA AD 2004-09-05 Amdt 39-13594. Note: BFGoodrich Service Bulletins 2-1528-32-3 and 2-1530-32-3, both original issue, and Goodrich Service Bulletins 2-1528-32-2 and 2-1530-32-2, both Revision 5, refer. Compliance: Within 50 landings or 90 days after 8 July 2004, whichever occurs first, for the initial inspection. As specified in the Requirement document for other compliance times, with a revised effective date of 8 July 2004. This Airworthiness Directive becomes effective on 8 July 2004. Background: The FAA requires a one-time inspection of the brake stator discs to determine to what change level they have been modified (if any), and related actions if necessary. This Directive also requires that the existing markings on the piston housing of certain brake assemblies be eliminated. The actions required by this Directive are intended to prevent wheel lock-ups that may be caused by cracked or broken brake stator discs becoming jammed in the brake assembly and preventing rotation. Such jamming may result in reduced directional control or braking performance during landing. David Villiers Delegate of the Civil Aviation Safety Authority 28 May 2004 The above AD is notified in the Commonwealth of Australia Gazette on 16 June 2004.