COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Air Induction Systems
AD/AIRIND/2
Amdt 2
Brackett Air Filter Gasket 8/99
Applicability: Aircraft fitted with one of the following Brackett Aircraft Company air filter assemblies fitted as original equipment or in accordance with Supplemental Type Certificate (STC) SA71GL or STC SA693CE:
BA-2010 | BA-5110A | BA-4106 | BA-6110 | BA-4106-1 |
BA-8910 | BA-4210 | AAF-117 | BA-5110 | AAF-118 |
Requirement: To prevent particles from a defective gasket entering the carburettor which may result in partial or complete loss of engine power:
1. a. Visually inspect the air filter frame internally and externally for evidence of gasket looseness, movement or deterioration in accordance with Brackett Air Filter Document 1-194, and
- b. Replace any air filter assembly found to have a defective gasket with an air filter assembly as detailed in Requirement 2 of this directive.
2. Replace the air filter assembly, as applicable, with one of the following air filter assemblies which incorporate a retainer lip:
ORIGINAL AIR FILTER | REPLACEMENT | BRACKETT INSTRUCTION SHEET |
BA-2010 | BA-2010 Rev. A | BA-2004 |
BA-4106 | BA-4106 Rev. D | BA-4105 |
BA-4106-1 | BA-4106-1 Rev. A | RM-1 |
BA-4210 | BA-4210 Rev. B | BA-4205 |
BA-5110 | BA-5110 Rev. H | BA-5105 |
BA-5110A | BA-5110 Rev. D | BA-5111 |
BA-6110 | BA-6110 Rev. C | BA-6105 |
BA-8910 | BA-8910 Rev. B | BA-8910-3 |
AAF-117 | BA-4106 Rev. D | BA-4105 |
AAF-118 | BA-5110 Rev. H | BA-5105 |
Compliance with Requirement 2 constitutes terminating action for the repetitive inspection requirement of this directive.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Note 1: A copy of Brackett Air Filter Document 1-194 may be obtained from the local Airworthiness District Office.
Note 2: FAA Airworthiness Directive 96-09-06 refers.
Compliance: 1. a. Unless previously accomplished, within 100 hours’ time in service, and thereafter at intervals not to exceed 130 hours’ time in service effective 12 September 1996.
- b. Before further flight.
2. Within 500 hours’ time in service effective 12 September 1996. This Amendment becomes effective on 12 August 1999.
Background: This directive was issued in May 1995 to require an inspection of certain Brackett air inlet filters for evidence of a defective gasket. The requirement addressed a report of an accident resulting from failure of an air inlet filter gasket. This amendment introduces a minor editorial change to clarify the terminating action.
Amendment 1 to this Airworthiness Directive became effective on 12 September 1996.
The original issue of this Airworthiness Directive became effective on 25 May 1995.
Overview
The Civil Aviation Regulations 1998, as amended, contain provisions under Part 39 - 107 that address the safety and airworthiness of aircraft. Specifically, this legislation includes a schedule of airworthiness directives issued by the Civil Aviation Safety Authority. The directive AD/AIRIND/2, first issued in May 1995 and amended in August 1999, pertains to Brackett Air Filter Gaskets in certain aircraft models. This directive was introduced to address the safety concern of particles from defective gaskets entering the carburettor, which could potentially lead to a loss of engine power. The policy objective of this directive is to ensure the ongoing airworthiness of aircraft by mandating inspections and replacements of air filter assemblies with retainer lips to prevent such safety hazards. The directive was enacted by the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 107, under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, governs the maintenance and safety of airworthy aircraft in Australia. This regulation applies to aircraft fitted with certain Brackett Aircraft Company air filter assemblies, namely BA-2010, BA-5110AB, BA-4106, BA-6110, BA-4106-1, BA-8910, BA-4210, AAF-117, and BA-5110AAF-118, whether these were installed as original equipment or via Supplemental Type Certificates SA71GL or SA693CE. The directive is concerned with preventing particles from a defective gasket entering the carburettor, which could lead to partial or complete loss of engine power. The regulation mandates visual inspections of the air filter frame for evidence of gasket looseness, movement, or deterioration, and the replacement of defective gaskets with specified air filter assemblies incorporating a retainer lip. Compliance with the directive is mandatory, with inspections required within 100 hours’ time in service after the directive’s initial effectiveness date and at intervals not exceeding 130 hours thereafter. The requirement to replace the air filter assembly must be completed within 500 hours’ time in service from the same initial date. This directive extends across the Commonwealth, applying uniformly nationwide, and compliance must be adhered to by all relevant aircraft operators and maintenance personnel.
Key Provisions
The main sections of this Airworthiness Directive (AD) require aircraft fitted with specific Brackett air filter assemblies to undergo visual inspections to prevent particles from a defective gasket entering the carburettor (section 1). If a defective gasket is found, the assembly must be replaced with one that includes a retainer lip, as outlined in section 2. Compliance with the replacement requirement terminates the need for repetitive inspections (section 2). The directive specifies the timeframes for these inspections and replacements: initial inspection and replacement must occur within 100 hours of service, followed by inspections at intervals not exceeding 130 hours, and replacements every 500 hours (section 3).
The obligations imposed by this AD on the relevant parties include conducting thorough visual inspections of the air filter assemblies in accordance with Brackett Air Filter Document 1-194. Operators of aircraft fitted with the specified Brackett air filter assemblies are required to ensure that any defective gaskets are replaced with the approved replacement assemblies within the prescribed timeframes. These obligations are aimed at maintaining airworthiness and preventing potential engine power loss due to particulate contamination.
Failure to comply with the requirements of this AD may result in significant safety risks, including the potential for partial or complete loss of engine power during flight, which could lead to serious accidents. While the AD does not explicitly state penalties, non-compliance with airworthiness directives is generally considered a serious breach of aviation safety regulations. Consequently, operators and owners found in breach of these requirements could face enforcement actions by the Civil Aviation Safety Authority (CASA), which could include fines, suspension or revocation of aircraft certificates, or other regulatory sanctions. Additionally, in the event of an accident resulting from non-compliance, operators could be subject to criminal charges if it is determined that the breach contributed to the incident.