AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/HS 125/45 Amdt 2 and issues the following 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.
British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/45
Amdt 3
Retirement Lives - Fatigue Critical Components 5/2003
Applicability: All models.
Requirement: All life limited items shall be retired from service at or before the times listed in the following documents, unless otherwise negotiated with the Authority.
- a. -1/1A/1B Series: Hawker Raytheon Corporate Jets Maintenance Schedule - contained in the 125-1 Maintenance Library, Revision 1, issued June 2002.
b. -3/3A/3B/3A-R/3B-RA Series: Hawker Raytheon Corporate Jets Maintenance Schedule - contained in the 125-3 Maintenance Library, Revision 1, issued June 2002.
c. -400A/B Series: Hawker Raytheon Corporate Jets Maintenance Schedule, Revision 2, issued December 2001.
d. -600A/B Series: Hawker Raytheon Corporate Jets Maintenance Schedule, Revision 4, issued December 2002.
2. 700 Series: Hawker Raytheon Corporate Jets 125 series 700 Flexible Maintenance Schedule, Revision 2, issued December 2002.
3. 800 Series: Hawker Raytheon Corporate Jets 125 series 800 Flexible Maintenance Schedule, Revision 6, issued December 2002.
4. 1000 Series: Hawker Raytheon Corporate Jets 125 series 1000 Flexible Maintenance Schedule, Revision 4, issued June 2002. (The “High Utilisation” Maintenance Schedule for the 1000 series has now been deleted).
Note 1: The service lives have been calculated by the manufacturer on the following basis (British Aerospace SB 51-2 refers):
One cabin pressurisation to maximum differential pressure, One full cycle of flap operation, and
One full landing gear cycle per flight.
British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/45 Amdt 3 (continued)
In addition, it has been assumed that the cruise altitude for most flights is 20,000 ft or above. Should the pattern of aircraft operation differ significantly from these assumptions, operators are to advise the Authority, as it will be necessary to revise the fatigue lives quoted.
Note 2: With few exceptions, the above documents list only those items having life limitations of 20,000 flights or less. The Authority must be advised immediately upon reaching 19,500 flights to enable the fatigue life of the aircraft beyond 20,000 flights to be assessed.
Compliance: As per the documents referenced in the Requirement section of this Directive.
This Amendment becomes effective on 15 May 2003.
Background: This Amendment updates the Requirement section to reflect the latest revisions of the referenced documents.
The previous Amendment was raised to include the 1000 series aircraft and to reference the latest revision to the Maintenance Schedules.
Amendment 2 of this Airworthiness Directive became effective on 20 July 1995. Amendment 1 of this Airworthiness Directive became effective on 31 October 1985.
The original issue of this Airworthiness Directive became effective on 31 March 1977.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 20 March 2003
The above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.
Overview
The Civil Aviation Safety Authority (CASA) has issued an Airworthiness Directive (AD) under subregulation 39.1(1) of the Civil Aviation Safety Regulations 1998 (CASR 1998) to address the safety concerns regarding fatigue critical components of British Aerospace BAe 125 Series Aeroplanes. AD/HS 125/45 Amdt 3, which revokes the previous Amendment 2, aims to mandate the retirement of life-limited items at specific times to mitigate the risk of unsafe conditions arising from fatigue. This directive applies to all models of the BAe 125 series and requires operators to retire components at or before the specified times listed in the referenced maintenance schedules, unless otherwise negotiated with the Authority. The AD became effective on 15 May 2003 and updates the requirement section to reflect the latest revisions of the referenced documents.
Scope and Application
The Airworthiness Directive AD/HS 125/45 Amdt 3 pertains to all models of British Aerospace BAe 125 Series Aeroplanes and mandates the retirement of all life limited items from service at or before the specified times listed in the Hawker Raytheon Corporate Jets Maintenance Schedules. These schedules are outlined in various documents such as the 125-1 Maintenance Library, Revision 1, and others, issued between June 2001 and June 2002. The directive applies to all operators of the BAe 125 Series Aeroplanes within the Commonwealth of Australia, as it is issued under the authority of the Civil Aviation Safety Authority (CASA). The requirement to retire these life-limited items must be adhered to strictly, unless otherwise negotiated with the Authority. The directive takes effect from 15 May 2003, superseding previous amendments and the original directive issued on 31 March 1977. Operators must ensure compliance with the specified maintenance schedules and notify the Authority if their operational patterns significantly deviate from the assumed cruise altitude or other operational assumptions.
Key Provisions
The main operative sections of the Airworthiness Directive (AD) AD/HS 125/45 Amdt 3 require that all life-limited items of the British Aerospace BAe 125 Series Aeroplanes be retired from service at or before the times specified in the Hawker Raytheon Corporate Jets Maintenance Schedules (sections 5(a) to 5(g)). These schedules outline the service lives for various models of the BAe 125 series based on specific operational conditions, such as cabin pressurisation, flap operation, and landing gear cycles. Operators are required to adhere to these schedules unless otherwise negotiated with the Civil Aviation Safety Authority (CASA). This directive is an amendment that updates the requirement section to reflect the latest revisions of the referenced documents, replacing AD/HS 125/45 Amdt 2, which became effective on 20 July 1995. This amendment applies to all models of the BAe 125 series and becomes effective on 15 May 2003.
The AD imposes several obligations on the parties or entities it governs. Operators of the BAe 125 series aircraft must ensure that all life-limited components are monitored and maintained in accordance with the specified schedules. These schedules detail the specific number of flights after which certain components must be retired from service. Operators are required to keep detailed records of the flight cycles for each component and report to CASA when a component reaches 19,500 flights. This allows CASA to assess whether the fatigue life of the aircraft can be extended beyond 20,000 flights if the operational pattern significantly differs from the assumed conditions. Furthermore, operators must ensure that all personnel involved in the maintenance and inspection processes are adequately trained and follow the prescribed procedures as outlined in the maintenance schedules.
Any failure to comply with the AD's requirements can result in civil and criminal consequences. Non-compliance may lead to the grounding of the aircraft, which can significantly impact the operator's ability to conduct flights. Civil penalties may be imposed under the Civil Aviation Act 1988, and in more severe cases, criminal charges may be brought against individuals or the company responsible for the non-compliance. The maximum penalties for breaches can include substantial fines and imprisonment for individuals found guilty of criminal charges related to the AD. Additionally, CASA has the authority to take enforcement actions, which can include the revocation of airworthiness certificates for non-compliant aircraft, further compounding the legal and operational repercussions for the operator.