COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Embraer EMB-110 (Bandeirante) Series Aeroplanes
AD/EMB-110/18 Tailplane Deicer System - Modification 8/82
Applicability: All models equipped with pneumatic deicing systems. Document: 1. SB No. 110-30-012;
2. SB No. 110-30-013;
3. SB No. 110-55-020.
Note: Brazilian CTA AD 82-05-03 refers.
Compliance: Modify in accordance with documents 1, 2 and 3 within 100 hours time in service after 31 October, 1982.
Background: Sharp and unexpected pitching down moments have occurred on approach due to fractured tailplane deicer hoses causing ice build-up on horizontal stabilizer leading edges.
Overview
The Embraer EMB-110 (Bandeirante) Series Aeroplanes Tailplane Deicer System Modification (AD/EMB-110/18), enacted in 1982 by the Civil Aviation Safety Authority under the Civil Aviation Regulations 1998, was introduced to address the issue of sharp and unexpected pitching down moments that had been reported during aircraft approaches due to fractured tailplane deicer hoses, which caused ice to build up on the horizontal stabilizer leading edges. The objective of this Airworthiness Directive was to ensure compliance with specific service bulletins (SB No. 110-30-012, SB No. 110-30-013, and SB No. 110-55-020) to modify the deicer system, thereby enhancing flight safety and preventing potential accidents. This modification needed to be completed within 100 hours of time in service after 31 October 1982.
The enactment of this directive by the Australian Civil Aviation Safety Authority aimed to align with international safety standards and address the identified safety risk in a timely and effective manner. The directive references a similar action by the Brazilian CTA AD 82-05-03, indicating a coordinated international approach to managing the safety issue.
Scope and Application
The Embraer EMB-110 (Bandeirante) Series Aeroplanes Airworthiness Directive (AD/EMB-110/18) issued under the Civil Aviation Regulations 1998 applies to all models of the Embraer EMB-110 series equipped with pneumatic deicing systems. This directive is issued by the Civil Aviation Safety Authority (CASA) to address safety concerns related to the tailplane deicer system, specifically addressing the issue of fractured tailplane deicer hoses which can lead to unexpected pitching down moments during approach due to ice build-up on the horizontal stabilizer leading edges. The directive mandates compliance with the specified service bulletins (SB No. 110-30-012, SB No. 110-30-013, and SB No. 110-55-020) by modifying the tailplane deicer system within 100 hours of time in service after 31 October 1982. The directive applies nationally within the Commonwealth of Australia and extends to all operators of the specified aircraft models under the jurisdiction of CASA. This directive does not specify any exclusions or exemptions and is applicable to all relevant aircraft, irrespective of the operator or the location of the aircraft within Australia. Compliance is monitored and enforced by CASA, and failure to adhere to the requirements may result in penalties or other enforcement actions.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a schedule of airworthiness directives (AD) that mandate modifications to ensure aircraft safety. For the Embraer EMB-110 (Bandeirante) Series Aeroplanes, there is a directive (AD/EMB-110/18) concerning the tailplane deicer system, outlined in documents SB No. 110-30-012, SB No. 110-30-013, and SB No. 110-55-020. This directive is applicable to all models of the Embraer EMB-110 series that are equipped with pneumatic deicing systems. It references a Brazilian Civil Aviation Authority directive (CTA AD 82-05-03) for background context.
Operators of the Embraer EMB-110 series aeroplanes must comply with this directive by modifying the tailplane deicer system in accordance with the specified service bulletins within 100 hours of time in service following 31 October 1982. These modifications are intended to address sharp and unexpected pitching down moments that have occurred during approach due to fractured tailplane deicer hoses, which have led to ice build-up on the horizontal stabilizer leading edges.
The obligations imposed on operators by this directive are clear and specific: they must ensure that the required modifications to the tailplane deicer system are performed within the stipulated timeframe. The modifications must be carried out following the guidance provided in the service bulletins SB No. 110-30-012, SB No. 110-30-013, and SB No. 110-55-020. Failure to comply with these requirements could result in serious safety implications, including the risk of the aforementioned pitching down moments during critical phases of flight.
Failure to adhere to the airworthiness directive may lead to significant consequences. While the specific penalties are not detailed in the excerpt, under the Civil Aviation Act 1988, non-compliance with airworthiness directives can result in enforcement actions. These actions may include fines, penalties, or the grounding of the aircraft until the necessary modifications are performed. Additionally, operators may face civil liability for any incidents that occur due to non-compliance with the directive. The precise penalties would depend on the extent of the breach and the associated risks to aviation safety.