EFFECTIVEDATE:15JULY2000 REVISIONNO:0(ISSUE2)
1 General
1.1 This chapter prescribes the engineering requirements for ETOPS operations of Singapore aircraft pursuant to paragraph 29(5) of the Singapore Air Navigation Order.
2 Type Design
2.1 The essential airframe systems and the propulsion system for the particular airframe-engine combination shall be shown to be designed to fail-safe criteria and through service experience it must be determined that it can achieve a level of reliability suitable for the intended operation. The Configurations, Maintenance & Procedures (CMP) standard that establishes the suitability of an aircraft for extended range operation defines the minimum standard for the operation of ETOPS.
2.2 The operator shall obtain in writing from the manufacturer that the aircraft delivered to them complies with the type design, latest Airworthiness Directives and
CMP standards.
2.3 The Type Design Approval for the aircraft does not reflect a continuing airworthiness or Operational Approval to conduct extended range operations. An Operational Approval for ETOPS operation has to be separately obtained from the Authority.
3 Operational Approval
3.1 The operator shall demonstrate the ability to maintain and operate the aircraft so as to achieve the necessary reliability and to train its personnel to achieve the competence in extended range twin-engine operations. The ETOPS maintenance requirements are in Appendix 1 of this chapter. The operator shall operate the aircraft type for twelve months, or a period as decided by the Authority, before applying for the ETOPS Operational Approval.
3.2 The ETOPS Operational Approval to conduct an extended range twin-engine operation is in the form of a written permission from the Authority.
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4.11-2 CIVIL AVIATION AUTHORITY OF SINGAPORE 15JULY 2000 3.3 An operator requesting approval for extended range twin-engine operations or an
increase of diversion time shall submit the application, with the required supporting data, to the Authority at least three months prior to the proposed start of extended range operation with the specific airframe-engine combination. The operator shall submit the following:
(a) Type Design Approval.
(b) In-service experience.
(c) Propulsion system reliability (operator and world fleet).
(d) Reliability of significant airframe system.
(e) A programme to show the APU’s in-flight start capabilities.
(f) Operator’s Reliability and Maintenance Programmes.
(g) Conformance to latest Airworthiness Directives and CMP standards.
(h) Training of maintenance personnel.
(i) Any other data requested by the Authority.
4 Continuing Airworthiness
4.1 The aircraft manufacturer and the Type Certification Authority may periodically review the in-service reliability of the airframe-engine combination. Further to these reviews and every time that an urgent problem makes it necessary, the Certification Authority may require that the type design CMP standard be revised to achieve and maintain the desired level of reliability and, therefore safety of the extended range twin-engine operation. The operator shall ensure that its ETOPS fleet is in compliance with the latest revised CMP standards.
4.2 The CMP standards prior to the revision will no longer be considered suitable for continued extended range twin-engine operation. The CMP standards and its revisions may require priority actions to be implemented before the next ETOPS flight and other actions to be implemented according to a schedule accepted by the Authority.
4.3 The validity of the ETOPS Operational Approval depends on the operator keeping its ETOPS fleets in compliance with the:
(a) Current CMP standards.
(b) Airworthiness Directives.
(c) Alert Service Bulletins.
(d) Maintenance requirements as in Appendix 1 of this chapter.
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15JULY 2000 CIVIL AVIATION AUTHORITY OF SINGAPORE 4.11-3 5 Minimum Equipment List (MEL)
5.1 The MEL of the operator’s ETOPS fleet shall indicate clearly items that have different dispatch requirements for ETOPS flights. Systems considered to have a fundamental influence on flight safety shall include but are not limited to:
(a) Electrical power.
(b) Hydraulic system.
(c) Pneumatic.
(d) Flight instrumentation.
(e) Fuel.
(f) Flight control.
(g) Ice protection.
(h) Engine start and ignition.
(i) Propulsion system instruments.
(j) Navigation and communications.
(k) Auxiliary power-units.
(l) Air conditioning and pressurisation.
(m) Cargo fire suppression.
(n) Emergency equipment.
(o) Engine fire detection and extinguishing systems.
(p) Any other equipment required for extended range twin-engine operations.
6 Aircraft Dispatch
6.1 The operator shall ensure that the aircraft is precluded from being dispatch for
ETOPS when:
(a) After an engine in-flight shut-down (IFSD) on a previous flight.
(b) After primary airframe system failure on a previous flight.
(c) After a replacement of an engine.
(d) After failure of an engine power control system or significant adverse trends in engine performance.
(e) After any major maintenance works on the aircraft.
SINGAPORE AIRWORTHINESS REQUIREMENTS yCHAPTER 4.11
4.11-4 CIVIL AVIATION AUTHORITY OF SINGAPORE 15JULY 2000 6.2 The aircraft shall operate at least one non-revenue (handling flight) or non-ETOPS
revenue flight successfully before being released on extended range twin-engine operations. This shall be reflected in the aircraft technical log.
6.3 The report shall identify the following:
(a) Aircraft Registration.
(b) Engine identification (position, make and serial number).
(c) Total time, cycles and time since last shop visit.
(d) For systems, time since overhaul or last inspection of the defective unit.
(e) Phase of flight.
(f) Corrective action.
7 APU In-flight Start Capabilities
7.1 If any work is performed on the Auxiliary Power Unit (APU) that may affect the starting and operation of the APU, an in-flight start shall be performed on the next flight. The result of the in-flight start shall be annotated in the Technical Log of the aircraft.
7.2 To ensure that the APU maintains its in-flight start capabilities, the operator shall have a programme to schedule an APU in-flight start once every three months for each aircraft of its ETOPS fleet. The result of the in-flight start shall be annotated in the Technical Log of the aircraft.
8 Maintenance Training
8.1 The operator shall have a training programme that focuses on the special nature of ETOPS. This programme shall be included in the normal maintenance training for the operator’s maintenance personnel. The goal of this programme is to ensure that all personnel involved in ETOPS are provided with the necessary training so that the ETOPS maintenance tasks are properly accomplished and to emphasise the special nature of ETOPS maintenance requirements. Human factors principle shall be included in the training programme.
8.2 ETOPS qualified maintenance personnel are those that have completed the operators extended range training programme and have satisfactorily performed extended range tasks under supervision, within the framework of the operator’s approved procedures for Personnel Authorisation.
9 ETOPS Parts Control
9.1 The operator shall develop a parts control programme with support from the manufacturer, that ensures the proper parts and configuration are maintained for ETOPS. The programme includes verification that parts placed on an ETOPS aircraft during parts borrowing or pooling arrangements, as well as those parts used after repair or overhaul, maintain the necessary ETOPS configuration for that aircraft.
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