AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/HS 125/166 Amdt 1 and issues the following 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.
British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/166
Amdt 2
Main Landing Gear Actuator Cylinder Head 5/2003
Applicability: Model DH.125, HS.125 and BH.125 series aircraft; and Model BAe. 125 series 800A, 800B, 1000A, and 1000B aircraft; and Model Hawker 800, 1000, and 800XP aircraft; as listed in Raytheon Service Bulletin 32-3391, dated August 2000.
Requirement: Inspect in accordance with Raytheon Service Bulletin 32-3391.
Note: FAA AD 2003-04-20 Amdt 39-13069 refers.
Compliance: 1. For actuator cylinder heads that have been in service for more than 7 years or that have 4,001 or more total landings as at 15 May 2003, perform the eddy current inspection within 6 Months or 10 landings after 15 May 2003, whichever occurs first, unless already accomplished.
2. For all other actuator cylinder heads, as specified in the Requirement document. This amendment becomes effective on 16 May 2002.
Background: The FAA received reports of attachment lugs cracking at the main landing gear actuator cylinder head, with two incidents leading to actuator separation, which resulted in airframe damage.
Amendment 1 corrected and clarified certain affected aircraft serial numbers.
Amendment 2 is issued in response to a new FAA AD, which expands and clarifies applicability, and additionally, clarifies inspection compliance time.
Ame ndment 1 of this Airworthiness Directive became effective on 16 May 2002.
British Aerospace BAe 125 Series Aeroplanes
AD/HS 125/166 Amdt 2 (continued)
The original issue of this Airworthiness Directive became effective on 7 November 2001.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 3 April 2002
The above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.
Overview
The Civil Aviation Safety Authority (CASA) has issued Airworthiness Directive AD/HS 125/166 Amendment 2, which revokes the previous Amendment 1 and introduces new requirements for the British Aerospace BAe 125 Series Aeroplanes, including the DH.125, HS.125, BH.125, BAe. 125 series 800A, 800B, 1000A, and 1000B aircraft, as well as the Hawker 800, 1000, and 800XP aircraft. This Airworthiness Directive was introduced to address the problem of attachment lugs cracking at the main landing gear actuator cylinder head, with two incidents reported that resulted in actuator separation and airframe damage. The policy objective of this directive is to ensure the ongoing airworthiness of these aircraft by mandating specific inspections to prevent further incidents of this nature. The directive references the Federal Aviation Administration's (FAA) AD 2003-04-20 Amdt 39-13069 and includes compliance timelines for inspections based on the service history of the actuator cylinder heads.
Scope and Application
The Airworthiness Directive (AD) AD/HS 125/166 Amdt 2 issued under the Civil Aviation Regulations 1998 applies to certain British Aerospace BAe 125 Series Aeroplanes, specifically the model DH.125, HS.125, and BH.125 series aircraft, as well as the model BAe. 125 series 800A, 800B, 1000A, and 1000B aircraft, and model Hawker 800, 1000, and 800XP aircraft listed in Raytheon Service Bulletin 32-3391 dated August 2000. This AD mandates that an eddy current inspection be performed on the main landing gear actuator cylinder head to address the safety issue of attachment lugs cracking, which has resulted in actuator separation and airframe damage. The inspection must be completed within a specific timeframe: within six months or 10 landings after 15 May 2003, whichever occurs first, for actuator cylinder heads that have been in service for more than seven years or have 4,001 or more total landings as at 15 May 2003. For all other affected aircraft, inspections must be performed in accordance with the requirements outlined in the directive. The AD is applicable throughout the Commonwealth of Australia and has been notified in the Commonwealth of Australia Gazette on 23 April 2003.
Key Provisions
This legislative instrument, the Airworthiness Directive (AD) AD/HS 125/166 Amendment 2, addresses specific safety concerns with the main landing gear actuator cylinder head of certain British Aerospace BAe 125 series aeroplanes and other models listed in Raytheon Service Bulletin 32-3391 dated August 2000. The AD mandates actions to mitigate an unsafe condition identified by the Civil Aviation Safety Authority (CASA) delegate. Section 5 of the AD specifies the applicability, detailing which aircraft models are subject to this directive. Section 6 outlines the requirement, which involves an eddy current inspection as per Raytheon Service Bulletin 32-3391. Compliance timelines are provided in section 7, with specific inspection deadlines based on the aircraft's service history and total landings.
The AD imposes specific obligations on aircraft operators and maintenance personnel. Operators must ensure that the eddy current inspection is conducted on the main landing gear actuator cylinder heads within the stipulated timeframes. For actuator cylinder heads that have been in service for more than 7 years or have 4,001 or more total landings as of 15 May 2003, the inspection must be performed within 6 months or 10 landings after that date, whichever occurs first, unless the inspection has already been completed. For all other actuator cylinder heads, inspections must be conducted as specified in the requirement document. Failure to comply with the AD could result in serious safety risks, including potential structural failure of the landing gear, leading to airframe damage and accidents.
Breaches of the AD can result in severe consequences. While the AD itself does not explicitly state penalties, failure to comply with CASA directives can lead to enforcement actions under the Civil Aviation Act 1988. This could include fines, grounding of the non-compliant aircraft, or more severe penalties if the non-compliance results in an accident or incident. The exact penalties would depend on the nature and severity of the non-compliance and the subsequent outcomes. The AD aims to ensure the airworthiness and safety of the aircraft by enforcing stringent inspection and maintenance protocols.