ETOPS Question and answers correctly solved 2024/2025
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Course
ETOPS
Institution
ETOPS
ETOPS Question and answers correctly solved 2024/2025 ETOPS/EDTO
ETOPS - correct answer Extended-range Twin-engine Operational Performance Standards
A set of rules and procedures for airline manufacturers, airlines and their pilots to fly further than 60 minutes over land or water away fro...
A set of rules and procedures for airline manufacturers, airlines and their pilots
to fly further than 60 minutes over land or water away from a diversion airfield
Advantages of ETOPS - correct answer ✔More direct routes which save time
and money for both the airlines and it's passengers, as well as reducing the
fuel burn with associated carbon footprint.
Point of fuel planning during ETOPS - correct answer ✔the aircraft must
carry enough fuel to be able to reach a diversion airfield should an engine or
the pressurization fail at any point along the flight path
ETOPS fuel calculation scenarios - correct answer ✔1. Engine fail, drift down
to the engine out altitude and divert at single engine speed (never the most
limiting)
2. Pressurization fail, emergency descent and divert at 10,000 feet on both
engines.
3. Engine and pressurization fail, emergency descent and divert at 10000 feet
on one engine.
Additional fuel should also be catered for :
Use of APU as a secondary electrical generator.
A fuel penalty for the use of anti-ice at 10000ft.
Any aircraft MEL/CDL items that have a fuel penalty.
, On arrival at the diversion airfield there must be enough fuel on board for? -
correct answer ✔Decent to 1500ft and hold for 15 minutes (at green dot)
Full instrument approach and landing
ETOPS diversion airports - correct answer ✔1. Is the diversion airport
adequate? (Can we go there?)
2. Is the adequate airport 'suitable'? (Should we go there?)
What qualities as an adequate airport? - correct answer ✔When it satisfies
the aircraft requirements to use the airfield in a diversion.
Includes :
Permission to land, Watch Hours, ATC and metrology services, Rescue and
Fire Fighting Services (RFFS category of minimum 5), Passenger handling
services (steps, catering, accommodation etc), Aircraft handling services (fuel,
technical etc), at least one approach aid, Runway length sufficient to land at
estimated landing weight.
(Note: the ACN (Aircraft classification number) is allowed to exceed the
runway PCN (Pavement Classification Number), when an airport is used in
case of emergency)
What qualities as a suitable airport? - correct answer ✔The adequate airport
that the operator chooses becomes a suitable airport if it meets the weather
dispatch criteria required by ETOPS in terms of ceiling and visibility minima.
This is more restrictive than the normal airfield minima and is based on the
available landing approach aids at the adequate airport.
For planning purposes the diversion airfield forcast should be at or above this
restrictive minima for 1 hour before to 1 hour after the aircraft's estimated
landing time.
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