COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Seats and Berths
AD/SEATS/8
Amdt 2
Sicma Seat - Aft Track Fittings 13/99
Applicability: SICMA AERO SEAT passenger seats equipped with SICMA aft track fittings part numbers 90-000120-790-0 (affected seat part numbers are listed at Annex 1 of SICMA AERO SEAT Service Bulletin 90-25-005R1) and 90-000123-790-0
(see Note 1.).
Requirement: 1. Check the locking of the aft track fitting part number 90-000120-790-0 in accordance with the requirements of SICMA AERO SEAT Alert Service Bulletin A90-25-002 Revision A.
2. a. Modify the aft track fitting part number 90-000120-790-0 in accordance with the technical requirements of SICMA AERO SEAT Service Bulletin 90-25- 005R1 or later Revision; and
b. record accomplishment of the modification by stamping each seat identification plate in accordance with the instructions contained in the SB 90-25-005R1 or later Revision.
3. Discard tab locks P/N 00-4399 and replace with new items in accordance with Service Bulletin SICMA AERO SEAT 90-25-005 Revision (Issue) 2.
Notes:
- After modification, (Requirement 1 and 2) the aft track fitting part number 90- 000120-790-0 becomes 90-000123-790-0.
2. The following service bulletins are equivalent to SB 90-25-005R1:
42-25-001 | 50-25-001 | 63-25-004 | 65-25-001 |
71-25-012 | 78-25-001 | 85-25-001 | 91-25-001 |
83-25-001 | 92-25-001 | 93-25-001 | 90-25-004 |
These service bulletins have the same technical instructions. The only differences are serial numbers of seats and associated operators.
3. Replacement of aft track fitting with P/N 90-000125-790-0 in accordance with SICMA AERO SEAT Service Bulletin 90-25-009 is an approved alternative means of compliance with this Directive and is terminating action.
4. DGAC AD 94-085 (B)R2 dated July 13, 1999 refers.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Compliance: 1. Upon accumulation of 600 hours component time in service and thereafter at intervals not to exceed 600 hours component time in service.
2. Before 30 November 1994, unless one of the Service Bulletins listed at Note 2. has previously been accomplished.
3. At each seat installation or re-installation after 30 December 1999. This Amendment becomes effective on 30 December 1999.
Background: Reports were received of cases of the seat aft track fitting unlocking from the floor track. The DGAC requires replacement of the current aft track fitting with an improved track fitting with a positive locking system.
Amendment 1 was issued to reflect the revised DGAC AD which introduces the replacement of tab locks and provides an alternate compliance with SB 90-25-009 and became effective on 10 November 1994.
Amendment 2 is issued to permit only one use of the P/N 00-4399 locking tabs.
The original issue of this Airworthiness Directive became effective on 23 June 1994.
Overview
The Civil Aviation Regulations 1998, amended by F2006B06936, were enacted to address safety concerns regarding the unlocking of SICMA AERO SEAT passenger seats' aft track fittings. This legislative instrument was introduced by the Civil Aviation Safety Authority (CASA) to ensure the safety of aircraft operations by mandating modifications to specific SICMA AERO SEAT passenger seats equipped with particular aft track fittings. The policy objective of this amendment is to mitigate the risk of in-flight seat movement due to the failure of the locking mechanism, thereby enhancing passenger safety and maintaining the integrity of the aircraft's seating systems. The directive applies to seats identified by specific part numbers and requires periodic checks, modifications, and replacements as detailed in the SICMA AERO SEAT service bulletins referenced in the legislation.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 107 Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to SICMA AERO SEAT passenger seats equipped with SICMA aft track fittings part numbers 90-000120-790-0 and 90-000123-790-0, as detailed in Amendment 2 of AD/SEATS/8. This legislation is of national scope within Australia, given its foundation in the Commonwealth of Australia's Civil Aviation Regulations. The directive mandates checks and modifications to specific components of the affected seats to enhance safety, particularly concerning the locking mechanisms of the aft track fittings. The requirements include verifying the locking mechanism, modifying the fittings to meet the latest technical standards, and updating records accordingly. The directive further specifies the replacement of tab locks and establishes a compliance schedule based on the component's time in service and installation dates. This regulation aims to address safety concerns by ensuring that the aft track fittings remain securely locked to the floor track, thereby mitigating the risk of unlocking during service.
Key Provisions
The main provisions of the Civil Aviation Regulations 1998, specifically PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Seat and Berths AD/SEATS/8 Amendment 2, pertain to SICMA AERO SEAT passenger seats equipped with specific aft track fittings. The directive applies to seats with aft track fitting part numbers 90-000120-790-0 and 90-000123-790-0, with affected seat part numbers detailed in Annex 1 of SICMA AERO SEAT Service Bulletin 90-25-005R1. The primary requirement is to check and modify the locking mechanism of the aft track fittings to prevent unlocking incidents, as per SICMA AERO SEAT Alert Service Bulletin A90-25-002 Revision A. Specifically, the aft track fitting part number 90-000120-790-0 must be modified according to SICMA AERO SEAT Service Bulletin 90-25-005R1 or a later revision, and the modification must be recorded by stamping each seat's identification plate. Additionally, tab locks P/N 00-4399 must be discarded and replaced with new items as per Service Bulletin SICMA AERO SEAT 90-25-005 Revision (Issue) 2.
The obligations imposed by this directive require operators to ensure that the specified modifications are made to the SICMA AERO SEAT passenger seats. This includes regular checks of the aft track fitting locking mechanisms, modifications to the fittings as per the relevant service bulletins, and appropriate record-keeping. The modifications must be performed at specific intervals: every 600 hours of component time in service, before 30 November 1994 unless a listed service bulletin has already been applied, and at each seat installation or re-installation after 30 December 1999. Furthermore, operators must adhere to the guidance provided in the relevant service bulletins, such as the replacement of tab locks P/N 00-4399 and the use of improved locking systems.
Failure to comply with these directives may result in various consequences. While the specific penalties are not detailed in the provided text, non-compliance with airworthiness directives generally results in regulatory action, which could include fines, grounding of the aircraft, or other enforcement measures. Such actions are taken to ensure the safety of passengers and crew, and to maintain the airworthiness of aircraft operating under the Civil Aviation Regulations 1998. Operators are expected to adhere strictly to the requirements and timelines set forth to avoid these potential repercussions.