Schedule 3

A Singapore operator seeking a special operations approval to conduct EDTO using a twin‑engined aeroplane must, as part of the application under regulation 4(1), provide the necessary documents and information to demonstrate the Singapore operator’s ability to comply with the requirements in this Schedule.(2) The documents and information to be provided in accordance with sub‑paragraph (1) include —

the Type Design Approval for the aeroplane to be used;

the in‑service experience;

the reliability of significant airframe system;

the Singapore operator’s reliability programmes;

the EDTO manual;

the Singapore operator’s conformance to the latest Airworthiness Directives and Configuration, Maintenance and Procedures standards, as required under paragraph 4;

the Auxiliary Power Unit (APU) in‑flight start programme as required under paragraph 6, if applicable;

the procedures established by the Singapore operator to comply with the requirements of this Schedule; and

any other data requested by the Director‑General of Civil Aviation.Maintenance programme and procedures2.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must include, in the maintenance programme for the fleet of aeroplanes to be used for such operations (called in this Schedule its EDTO fleet), the standards, procedures, guidance and direction necessary to support the approved operations.(2) The Singapore operator must incorporate human factors principles into its maintenance programme.(3) The Singapore operator must take measures to ensure that every member of its maintenance personnel, and every member of its other operational personnel, involved in the maintenance of the EDTO fleet —

is aware of the nature of EDTO; and

has the knowledge, skills and ability to accomplish the requirements of the maintenance programme.(4) The Singapore operator must have procedures in its maintenance programme to prevent identical action being applied to multiple similar elements in any EDTO significant system.(5) The Singapore operator must, as part of the procedures in its maintenance programme —

identify the EDTO‑related tasks on the operator’s routine work forms and related instructions;

clearly define the EDTO‑related procedures;

develop an EDTO service check to verify that the aircraft and certain critical items are fit for EDTO operations;

ensure that, immediately before an EDTO flight, the EDTO service check is completed and signed off by a person authorised by the operator for this purpose; and

review or document (as appropriate) log books to ensure the proper performance of minimum equipment list procedures, deferred items, maintenance checks and system verification procedures.(6) When the Singapore operator contracts, or otherwise engages, an external organisation to carry out the maintenance on its EDTO fleet, the Singapore operator —

must ensure that the external organisation adheres to the maintenance programme; and

must be satisfied that the external organisation has established control procedures to ensure that —

every member of its maintenance personnel involved in the maintenance of the EDTO fleet is appropriately qualified; and

all flight dispatch procedures and additional maintenance requirements, as specified in the Singapore operator’s Maintenance Control Manual, are complied with.EDTO Manual3.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must develop a manual (called in this Schedule the EDTO Manual) for use by every member of its personnel involved in such operations.(2) The EDTO Manual must —

make reference to the Singapore operator’s maintenance programme and the other maintenance requirements set out in this Schedule; and

contain all EDTO requirements, including supportive programmes, procedures, duties and responsibilities and the primary systems or conditions that require verification actions under paragraph 10.(3) The Singapore operator mentioned in sub‑paragraph (1) must ensure that its EDTO Manual is kept up‑to‑date.Configurations, maintenance and procedures4.—

A Singapore operator with a special operations approval to conduct EDTO operations using a twin‑engined aeroplane must ensure that every aeroplane in its EDTO fleet is in compliance with the current Configuration, Maintenance and Procedures (CMP) standards, as issued by the aeroplane manufacturer and the State of Design.(2) Where a revision to the CMP standards results in any action being required by the Singapore operator mentioned in sub‑paragraph (1), the Singapore operator must implement that action —

before the next EDTO flight; or

in accordance with a schedule accepted by the Director‑General of Civil Aviation.Minimum equipment list5.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must clearly indicate, in the minimum equipment list for every aeroplane in the Singapore operator’s EDTO fleet, the items that have different dispatch requirements for EDTO flights.(2) For the purposes of sub‑paragraph (1), the following systems and equipment are considered to have a fundamental influence on flight safety:

electrical power system;

hydraulic system;

pneumatic system;

flight instrumentation;

fuel system;

flight control system;

ice protection system;

engine start and ignition system;

propulsion system instruments;

navigation and communications systems;

auxiliary power units;

air conditioning and pressurisation systems;

cargo fire suppression system;

emergency equipment;

engine fire detection and extinguishing systems;

any other equipment required for EDTO.APU in-flight start programme6.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must have procedures to verify the in‑flight start reliability of any auxiliary power unit, installed in the aeroplane, following any maintenance of an auxiliary power unit (or a component of it) that has identified, by the aircraft manufacturer or the APU manufacturer, as potentially affecting the auxiliary power unit’s start reliability at altitude.(2) Where required by the aircraft manufacturer or by the State of Design, the Singapore operator mentioned in sub‑paragraph (1) must have a programme (called in this Schedule an APU in‑flight start programme) to ensure that —

the auxiliary power unit installed in any aeroplane of the operator’s fleet maintains its in‑flight start capabilities; and

the result of any auxiliary power unit’s in‑flight start is annotated in the technical log of the aeroplane.Maintenance training programme7.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must have a maintenance training programme to ensure that —

every member of its operations personnel that is involved in the maintenance of the operator’s EDTO fleet is provided with the necessary training to competently complete EDTO‑related maintenance tasks assigned to the member; and

the nature of EDTO‑related maintenance requirements is emphasised.(2) The maintenance training programme mentioned in sub‑paragraph (1) must include human factors principles.(3) The Singapore operator mentioned in sub‑paragraph (1) must ensure that, before any person is assigned to perform any EDTO‑related maintenance task, that person —

has completed the operator’s EDTO maintenance training programme; and

has satisfactorily performed that task under supervision.EDTO parts control programme8.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must have a programme that ensures proper parts and configurations are maintained for every aeroplane in the EDTO fleet.(2) The programme mentioned in sub‑paragraph (1) must include a procedure to verify that, for every aeroplane in the EDTO fleet, the necessary EDTO configuration for the aeroplane is maintained for any part that is —

placed in the aeroplane during parts borrowing or pooling arrangements; or

used in the aeroplane after repair or overhaul.Dispatch for EDTO9.—

Subject to sub‑paragraph (2), a Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must not dispatch an aeroplane for an EDTO flight after —

the aeroplane has, on a previous flight, experienced —

an engine in‑flight shut‑down (IFSD);

a primary airframe system failure; or

a failure of an engine power control system; or

the Singapore operator —

observes significant adverse trends in engine performance;

replaces one of the aeroplane’s engine; or

has major maintenance work done on the aeroplane.(2) After the occurrence of any of the events listed under sub‑paragraph (1) in respect of an aeroplane, the Singapore operator may dispatch the aeroplane for an EDTO flight if the Singapore operator has —

taken remedial action on the aeroplane in accordance with a verification programme required under paragraph 10; and

conducted an in‑flight verification on the aeroplane after the remedial action was taken.(3) The Singapore operator must record, in the aircraft technical log or equivalent, any conduct of the in‑flight verification required under sub‑paragraph (2)(b).(4) The record of the in‑flight verification mentioned in sub‑paragraph (3) must include the following details:

identification of the affected engine (such as the position, make and serial number), and the history of its use (such as the total time or cycles since manufactured, the total time since its last maintenance in a workshop);

identification of any affected systems or defective unit, and the history of its use;

the circumstances of the flight when the event listed under sub‑paragraph (1) occurred (such as the phase of flight);

any remedial action taken in accordance with the verification programme required under paragraph 10.Verification programme10.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must have a verification programme to ensure that remedial action is taken following any event listed under paragraph 9(1).(2) The programme required in sub‑paragraph (1) —

must clearly specify —

the person who initiates the verification actions; and

the section or group of persons responsible for the determination of the necessary action to be taken; and

must establish the means to assure the completion of the verification programme or the remedial action procedures.Oil consumption monitoring11.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must monitor the oil consumption of each engine and each auxiliary power unit installed in an aeroplane from its EDTO fleet.(2) The monitoring programme or mechanism implemented pursuant to sub‑paragraph (1) must take into consideration the aeroplane manufacturer’s recommendations, oil consumption trends and other information relevant to the aeroplane’s make and model.Reliability monitoring12.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must have a reliability monitoring programme that includes a programme or mechanism (called in this Schedule a reliability monitoring programme) to monitor the systems identified in paragraph 5(2) for the early identification and prevention of EDTO‑related problems.(2) The reliability monitoring programme required under sub‑paragraph (1) must focus on events that are detrimental to EDTO flights and incorporate reporting procedures for significant events.(3) The Director-General of Civil Aviation may require a Singapore operator mentioned in sub‑paragraph (1) to provide information on EDTO‑related events that the Director‑General of Civil Aviation considers relevant for the following purposes:

to establish if the reliability level of the operator is adequate;

to assess the Singapore operator’s competence and capability to safely continue EDTO flights.Engine condition monitoring13.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must, as part of the reliability monitoring programme mentioned in paragraph 12(1) —

monitor the condition of each engine of every aeroplane in the Singapore operator’s EDTO fleet such that the Singapore operator is able to detect deterioration of such engines at an early stage and do remedial action before safe operation is affected; and

have procedures to ensure that engine limit margins of every aeroplane in the Singapore operator’s EDTO fleet are maintained such that a prolonged single‑engine diversion may be conducted without exceeding approved engine limits (such as rotor speeds, exhaust gas temperature) at all approved power levels and expected environmental conditions.(2) For the purpose of sub‑paragraph (1)(a), the Singapore operator must have procedures —

that describe the parameters to be monitored, the method of data collection and assessment, including those for monitoring and assessing in‑flight shut‑down rate of the aeroplanes in the operator’s EDTO fleet;

that take into account manufacturer’s instructions and industry practice;

that specify remedial actions; and

for reporting to the Director‑General of Civil Aviation any undesirable trends observed on the parameters monitored and assessed in sub‑paragraph (a).Reporting14.—

A Singapore operator with a special operations approval to conduct EDTO using a twin‑engined aeroplane must report to the Authority the occurrence of any of the following reportable safety matters on an aeroplane that is part of the operator’s EDTO fleet, within 72 hours after the completion of the affected flight:

any in‑flight shut‑downs;

any uncommanded power changes or surges;

any inability of the pilot to control the engine or obtain desired power;

any unscheduled removal of an engine;

any problem with systems critical to EDTO;

any other events detrimental to EDTO.(2) The report required under sub‑paragraph (1) must include the following information:

identification of the aircraft (such as the registration);

identification of the affected engine (such as the position, make and serial number) and the history of its use (such as the total time or cycles since manufacture, and the total time since its last maintenance in a workshop);

identification of any affected systems or defective units, and the history of its use;

the circumstances of the flight during which the reportable safety matter occurred (such as the phase of flight);

any remedial action taken.[S 678/2018 wef 09/10/2018]