COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Beechcraft 1900 Series Aeroplanes
AD/BEECH 1900/26 MLG Actuator End Cap 4/99
Applicability: Model Serial Numbers
1900 UA-2 and UA-3
1900C UB-1 through UB-74, and UC-1 through UC-174
1900C (C-12J) UD-1 through UD-6
1900D UE-1 through UE-299
Requirement: Inspect the main landing gear hydraulic actuators to determine whether any Frisby Aerospace actuator, part number (P/N) 114-380041-11 or P/N 114-380041-13 is installed. Accomplish this inspection in accordance with Raytheon Mandatory Service Bulletin (MSB) SB.32-3141.
If any Frisby Aerospace actuator, P/N 114-380041-11 or P/N 114-380041-13 is installed, before further flight, remove it and accomplish one of the following:
- Replace the Frisby Aerospace actuator with one of a part number listed in the Material Information section of Raytheon MSB SB.32-3141. Accomplish this replacement in accordance with the applicable maintenance manual; or,
2. Rework the Frisby Aerospace actuator by incorporating the kit referenced in the Material Information section of Raytheon MSB SB.32-3141. Accomplish this rework in accordance with Frisby Aerospace Service Bulletin 1FA10043-0001, dated October 1997.
Note: FAA AD 99-04-08 Amdt 39-11032 refers.
Compliance: Hours Time-in-Service (TIS) on the
MLG Actuator
Inspection Compliance Times after 22 April 1999
Less than 6,000 hours TIS Upon accumulating 6,600 hours TIS on the actuator or within the next 600 hours TIS, whichever occurs later
6,000 hours TIS through 6,999 hours TIS Within the next 600 hours TIS 7,000 hours TIS through 7,999 hours TIS Within the next 500 hours TIS 8,000 hours TIS through 8,999 hours TIS Within the next 400 hours TIS 9,000 hours TIS through 9,999 hours TIS Within the next 300 hours TIS 10,000 hours TIS or more Within the next 200 hours TIS This Airworthiness Directive becomes effective on 22 April 1999.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Background: The FAA received reports of fatigue cracks in the end cap of main landing gear hydraulic actuators manufactured by Frisby Aerospace and installed on the affected aircraft. The actions specified by this Directive are intended to prevent the main landing gear from failing to lock down due to the hydraulic actuator cracking and separating, which could result in loss of control of the aircraft during landing, taxi, or ground operations.
Overview
The Civil Aviation Regulations 1998, amended by the Airworthiness Directive AD/BEECH 1900/26 issued in 1999, address the critical safety concern of potential fatigue cracks in the end cap of main landing gear hydraulic actuators on specific Beechcraft 1900 series aeroplanes. This directive was introduced to mitigate the risk of hydraulic actuator failure, which could lead to severe consequences such as loss of control during critical phases of flight. The directive mandates inspections and corrective actions to ensure the continued airworthiness of the affected aircraft, aligning with the overarching policy objective of enhancing aviation safety. The Australian Government, through the Civil Aviation Safety Authority, enacted this directive to ensure compliance with international safety standards and to safeguard the integrity of civil aviation operations within Australia.
Scope and Application
The Civil Aviation Regulations 1998, under Part 39 - 105, specifically pertains to Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA). This particular directive applies to Beechcraft 1900 Series aeroplanes, including models and serial numbers specified in the AD/BEECH 1900/26, which mandates an inspection and potential replacement or rework of the main landing gear hydraulic actuators. The requirement is to inspect these actuators to determine if they are manufactured by Frisby Aerospace and bear specific part numbers. If such actuators are found, they must be removed and either replaced with specified part numbers or reworked using a particular kit, as outlined in the referenced service bulletins. Compliance with these directives is contingent on the time-in-service hours of the aircraft and must be adhered to within prescribed timeframes to ensure continued airworthiness and safety. This regulation applies across the Commonwealth of Australia and is enforced by CASA.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, Section 105, outline the Airworthiness Directives (ADs) for various aircraft, including the Beechcraft 1900 Series Aeroplanes. In this instance, AD/BEECH 1900/26 pertains to the inspection and replacement of main landing gear (MLG) actuator end caps on certain models and serial numbers of the Beechcraft 1900 series (Sections 1 and 2). This AD requires operators of the affected aircraft to inspect the MLG hydraulic actuators to determine if they have specific Frisby Aerospace actuators installed (Section 3). If the specified actuators are found, they must be removed and replaced or reworked before further flight, following the instructions provided in Raytheon’s Mandatory Service Bulletin SB.32-3141 (Section 4).
The obligations under this directive require operators to conduct the specified inspection and take corrective action if necessary. Operators must ensure that the inspection is carried out in accordance with the instructions provided in the Raytheon Mandatory Service Bulletin SB.32-3141 (Section 3). If the specified Frisby Aerospace actuators are identified, the operator must either replace them with an approved part or rework them as instructed (Section 4). Operators must also adhere to the compliance times outlined for inspections based on the time-in-service hours of the MLG actuator (Section 5). These obligations ensure the continued airworthiness and safety of the aircraft by preventing potential failures in the MLG system.
Failure to comply with the requirements set out in this Airworthiness Directive may result in serious safety risks, including the potential for loss of control of the aircraft during critical phases of flight. While the Civil Aviation Regulations 1998 do not explicitly state specific penalties for non-compliance with ADs, non-compliance could potentially lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions may include fines, suspension or revocation of airworthiness certificates, and other regulatory penalties under Australian aviation law. The severity of these penalties would depend on the extent of non-compliance and the impact on aviation safety.