Scribd
Upload
15 views2 pages

Feed Back Sect05

The document consists of a series of questions and answers related to the Electronic Engine Control (EEC) system, including its components like FADEC and dedicated alternators. It addresses operational queries such as channel command, data input failures, and power supply requirements for the EEC. Key topics include the functionality of EEC channels, backup signals, and maintenance procedures for ground power interrogation.

Uploaded by

尹兴旺
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
15 views2 pages

Feed Back Sect05

The document consists of a series of questions and answers related to the Electronic Engine Control (EEC) system, including its components like FADEC and dedicated alternators. It addresses operational queries such as channel command, data input failures, and power supply requirements for the EEC. Key topics include the functionality of EEC channels, backup signals, and maintenance procedures for ground power interrogation.

Uploaded by

尹兴旺
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
You are on page 1/ 2

ELECTRONIC ENGINE CONTROL FEEDBACK QUESTIONS

Q1 What is the FADEC ?


Q4 What is the purpose of the dedicated alternator
A) The interface between the
or permanent magnet alternator (PMA) ?
Display Management Computer
and the Engine Interface Unit. A) To supply electrical power for whole
aircraft operation.
B) The EEC, sensors and data input
and the engine output devices B) To supply electrical power for the EEC.
such as fuel operated actuators
and pneumatic valves. C) To supply electrical power for the thrust
lever resolver signals.
C) The Electronic Engine Controller.
Q5 If both EEC channels failed, what engine power
Q2 Is the same channel of the EEC, always in
will automatically be set ?
command ?
A) Yes – except with channel failure. A) TOGA, power or maximum power of the
day.
B) No – command alternates between
channels each hour. B) Maximum climb power.
C) No – command alternates between C) Approximately idle power.
channels on consecutive flights.

Q3 If a single data input signal to the EEC fails, will Q6 Are both of the EEC controlling channels
control revert to the other channel ? operationally identical ?
A) Yes – in all cases. A) Yes.
B) Yes – in certain identified conditions. B) No.
C) No – the input is used from the other
channel.
Q7 Will the channel in back-up mode compute
control signals at the same time as the controlling Q11 What provides the EEC channels A & B with the
channel ? primary N2 signal ?

A) Yes. A) The frequency of the output of a


dedicated single phase winding.
B) No.
B) The Phonic wheel and Pulse probe
Q8 Is the data entry plug (J6) exchanged if the arrangement on the LP stubshaft.
EEC is replaced ? C) The frequency of the output from the
A) Yes. windings of channel “A” power
supply.
B) No.
C) Only if the engine is sent for Q12 What provides the EEC channels A & B with
overhaul. a back-up N2 speed signal ?

Q9 At what speed will the dedicated alternator A) The frequency of the output of a
power the EEC ? dedicated single phase winding.
A) At approximately 10% N2. B) The Phonic wheel and Pulse
B) At stabilised idle speed. probe arrangement on the LP
stubshaft.
C) At 43% N2 with starter control valve
closed. C) One of the three phase windings
of Channel “B” power generation.
Q10 What additional task must be performed to supply
power for the EEC when ground maintenance
interrogation is required ?

A) None.
B) Select the FADEC ground power
switch on, after energising the
aircraft 28v DG bus – bar.
C) Select emergency power by the
rotary switch.

You might also like