Aircraft Engine Starter Air Duct Quiz

Play an AI-generated podcast conversation about this lesson

What are the two methods for obtaining the required airflow for airstarts?

Bleed air supplied by the APU (assisted airstart) or by air flowing through the engine (windmilling start).

How are the ignition requirements met for engine starting?

Ignition requirements are automatic or are met by continuous ignition, which is selected by the flight crew.

What must the power levers be in during engine starting, and what happens if they are not in this position?

The power levers must be in the idle position during engine starting. If a power lever is forward of the idle position during engine start, a (caution) CAS message will be displayed to alert the crew.

What is the Starter Air Valve (SAV) used for in the engine starting system?

The Starter Air Valve (SAV) is part of the engine starting system and is used to control the flow of air for starting the engine. Signup and view all the answers

What is the function of the Air Turbine Starter (ATS) in the engine starting system?

The Air Turbine Starter (ATS) is used to turn the High-Pressure (HP) compressor through the accessory gearbox. Signup and view all the answers

What are the options for selecting start and cranking cycles in the engine starting system?

The Full Authority Digital Engine Control (FADEC) can select normal (automatic) ground and airstart, alternate (manual) ground and airstart, and wet or dry cranking. Signup and view all the answers

What triggers the EEC to determine whether a starter-assisted or windmill start should be performed during an air start?

Computed airspeed Signup and view all the answers

When does the blue SVO icon illuminate on the Engine Instrument Display Unit?

When the Starter Air Valve (SAV) passes through 7° on its way open Signup and view all the answers

What does the flashing amber SVO icon indicate on the engine instruments?

That the start valve was commanded closed by the EEC but is still in the open position Signup and view all the answers

When is the (caution) CAS message displayed regarding the SAV?

When the SAV remains closed after the EEC commands the valve to open Signup and view all the answers

What is the duty cycle for the starter during engine starts?

Three start cycles with a maximum of three minutes per start cycle Signup and view all the answers

What is the maximum HP rpm speed at which the starter may be re-engaged?

42% HP rpm Signup and view all the answers

What is the limitation for the starter duty cycle as mentioned in the Flight Manual?

Three start cycles with a maximum of three minutes per start cycle Signup and view all the answers

How can the start sequences be terminated?

Automatically under normal condition by the EEC at approximately 42% HP RPM, automatically under abnormal conditions at any time by the EEC, and manually by selection of the ENG START switch to OFF Signup and view all the answers