Singapore legislation
Regulation 43
of Air Navigation (98 — Special Operations) Regulations 2018
Regulation 43
Extension of maximum diversion time
Subregulation 1
If a Singapore operator with a special operations approval to conduct EDTO intends to increase the approved maximum diversion time for an aeroplane, of a specific airframe‑engine combination, used for any such operation, the Singapore operator must make an application under regulation 7(2) to vary the special operations approval.
Subregulation 2
The application mentioned in paragraph (1) —
must be made at least 3 months before the intended date of commencement of any EDTO operation with the increased maximum diversion time using an aeroplane of that specific airframe‑engine combination; and
must include supporting documents and other supporting data that demonstrate the Singapore operator’s ability to maintain an overall level of safety for the operations that is adequate.
Subregulation 3
Subject to paragraph (4), the maximum diversion time that may be approved for an aeroplane, of any specific airframe‑engine combination, that is used for EDTO must not exceed —
for any aeroplane, the most limiting EDTO‑significant system time limitation (if any) indicated in the aircraft’s flight manual (directly or by reference) that is relevant to that particular operation; and
for any aeroplane with 2 turbine engines, the maximum diversion time for which the aeroplane has been certified.
Subregulation 4
The Director‑General of Civil Aviation may approve, in respect of an aeroplane type used for EDTO with a specific airframe‑engine combination, a maximum diversion time that is beyond the time limits of the most time‑limiting EDTO‑significant system if the Singapore operator applying to increase the maximum diversion time for its operations demonstrates to the Director‑General of Civil Aviation, through a safety risk assessment, that an equivalent level of safety will be maintained.
Subregulation 5
The safety risk assessment mentioned in paragraph (4) —
must demonstrate —
the overall reliability of an aeroplane with that specific airframe‑engine combination;
the reliability of each time‑limited system of the aeroplane; and
the specific mitigation measures proposed by the Singapore operator; and
must provide any information from the aeroplane manufacturer that may be relevant to the assessment.