COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Beechcraft 1900 Series Aeroplanes
AD/BEECH 1900/29 Electric Trim Servo Cover 11/99
Applicability: Model 1900D aeroplanes, Serial Numbers UE-1 through UE-246, with electric trim option incorporated.
Requirement: 1. Install electric elevator trim servo covers in accordance with the instructions in Kit No 129-5035-1, as referenced in Raytheon Mandatory Service Bulletin SB 27- 3080 issued October 1998 or Revision 1 issued December 1998.
Note: FAA AD 99-16-12 Amdt 39-11247 refers.
Compliance: 1. Within 600 hours time in service from the effective date of this Directive.
This Airworthiness Directive becomes effective on 4 November 1999.
Background: The Federal Aviation Administration has advised that Beech 1900D aeroplanes left the factory without covers installed on the electric elevator trim servos. This could result in failure of the electric elevator trim and difficulty operating the manual trim caused by moisture freezing on parts of the electric actuator installation.
This Directive requires covers to be installed on electric elevator trim servos to prevent the ingress of moisture.
Overview
The Civil Aviation Regulations 1998, particularly PART 39 - 105, address the safety and airworthiness of aircraft through the implementation of Airworthiness Directives. Enacted by the Commonwealth of Australia, this legislation was introduced to ensure the safety of aviation operations by mitigating potential hazards associated with aircraft design and maintenance. The directive concerning Beechcraft 1900 Series aeroplanes, specifically AD/BEECH 1900/29, aims to resolve issues identified by the Federal Aviation Administration regarding the electric trim servos on the Beech 1900D model. The policy objective is to mandate the installation of electric elevator trim servo covers to prevent moisture ingress, thereby avoiding potential failures and operational difficulties. Compliance with this directive is crucial to ensure the safety of flight operations, and it became effective on 4 November 1999.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to Model 1900D aeroplanes with serial numbers ranging from UE-1 to UE-246 that have been equipped with the electric trim option. This regulation is issued by the Civil Aviation Safety Authority (CASA) and mandates the installation of electric elevator trim servo covers in accordance with the specified instructions. The directive is intended to address the safety issue of moisture ingress, which can lead to electric trim failures and manual trim difficulties due to the freezing of moisture in the electric actuator installation. The directive is effective from 4 November 1999, and compliance is required within 600 hours of time in service from the effective date of this Directive. This legislation extends to aircraft manufactured by Beechcraft within the specified serial number range and applies to all operators of these aircraft within Australia and its territories. The directive incorporates references to the Federal Aviation Administration's Advisory Directive (FAA AD 99-16-12 Amdt 39-11247), ensuring alignment with international safety standards.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandate the installation of electric elevator trim servo covers on Beechcraft 1900D series aeroplanes. This requirement is detailed in AD/BEECH 1900/29 (section 1) and applies to model 1900D aeroplanes with serial numbers ranging from UE-1 to UE-246 that include the electric trim option. The directive stipulates that these covers must be installed in accordance with the instructions provided in Kit No 129-5035-1, as referenced in Raytheon Mandatory Service Bulletin SB 27-3080 issued in October 1998 or its revision issued in December 1998 (section 2). This mandate is supported by FAA AD 99-16-12 Amdt 39-11247 (section 3), which was communicated by the Federal Aviation Administration.
Compliance with these regulations is crucial. Operators and owners of the affected Beechcraft 1900D aeroplanes must ensure that the electric elevator trim servo covers are installed within 600 hours of time in service from the effective date of this directive, which is 4 November 1999 (section 4). The directive aims to mitigate risks associated with moisture ingress, which can lead to the failure of the electric elevator trim and difficulties in operating the manual trim due to moisture freezing on parts of the electric actuator installation (section 5). This proactive measure is intended to enhance the safety and reliability of the aircraft.
Failure to comply with the Airworthiness Directive AD/BEECH 1900/29 can lead to significant consequences. The Civil Aviation Regulations 1998 impose strict obligations on the operators and owners of the Beechcraft 1900D aeroplanes to adhere to the specified maintenance and installation requirements. Non-compliance can result in penalties, including potential grounding of the aircraft until the required modifications are completed. Such actions are taken to ensure that the aircraft meet the necessary safety standards, thereby protecting both the crew and passengers from potential hazards. In addition to potential civil penalties, operators who fail to comply may face enforcement actions from the Civil Aviation Safety Authority, which could include fines or other regulatory sanctions.