Ops. Reg. Section 1-2

For non-EDTO operations, a twin-engine aircraft must not fly more than ________ from the alternate en-route aerodrome, and this aerodrome must have________?

• 60 mins, Adequate facilities and services, fit aircraft performance, operations procedures

• 60 mins, Suit PIC suitability

• 90 mins, Operation suitability, runway suitability

• 120 mins, operation suitability, runway length, PIC suitability

What is the maximum twin engine operations without ETOPS approval in Singapore? (Ops 4.7.1)

• 60 mins at single-engine cruise speed

• 60 mins at maximum cruise speed

• 60 mins at normal cruise speed

• 90 mins at single-engine cruise speed

• 60 mins at single-engine de-pressurized cruise speed

EDTO flight

• 120min, able to cruise with 1 engine inoperative, able to land with proper conditions based on PIC assessment

• 90min, able to cruise with 2 engines, aerodrome must be 24hr available

• 60min, able to cruise with 2 engines, availability of alternate aerodrome with Adequate facilities and services

• 60min, able to cruise with 1 engine inoperative, availability of alternate aerodrome with Adequate facilities and services

A non-EDTO flight from an aerodrome below landing minima is:

• Permitted if it is within 120mins from a take-off alternate at one engine inoperative cruise speed

• Permitted if it is within 60mins from a take-off alternate at one engine inoperative cruise speed

• Permitted if it is within 60 mins from a take-off alternate at normal cruise speed

• Not permitted.

Take off alternate:

• Cannot be used as en-route alternate

• Cannot be used as destination alternate

• upon landing at the take-off alternate, cannot use the original departure aerodrome as a take-off alternate

Take-off alternate is required to be nominated:

• For all instrument departures at night

• For all international air operation departures

• Single-engine IFR departures

• if not possible to return to departure aerodrome

The airfield that is selected as the primary diversion airfield immediately after departure is called:

• En-route alternate

• Departure alternate

• Take off alternate

• Emergency alternate

En-route alternate:

• destination aerodrome may not be nominated as en-route alternate

• destination aerodrome may be nominated as en-route alternate

• take-off alternate may not be nominated as en-route alternate

• departure aerodrome may not be nominated as en-route alternate

En-route alternate definition:

• T/o alternate may be used as ERA

• Departure AD may not be used as ERA

• Destination AD may not be used as ERA

En-route alternate definition: (254 variants of similar question)

• An aerodrome at which an aircraft would be able to land after experiencing an abnormal or emergency condition whilst en route. Take-off alternate may not be used as an en-route alternate

• An aerodrome at which an aircraft would be able to land after experiencing an abnormal or emergency condition whilst en route. Destination alternate may not be used as an en-route alternate.

• An aerodrome at which an aircraft would be able to land after experiencing an abnormal or emergency condition whilst en route. Take-off alternate may be used as an en-route alternate.

• An aerodrome at which an aircraft would be able to land after experiencing an abnormal or emergency condition whilst en route. Departure may not be used as an en-route alternate.