Abnormal Operations And Malfunctions

Question 1

If PMS fails or if the PMS push button on the ENGINE panel is pressed what will occur

Answer 1

PMS will indicate MAN in red on the engine panel.

MFD - ENGINE page will indicate a PMS MANUAL in RED
DWP - RED PMS

Question 2

What does PMS MANUAL mode do to the aircraft?

Answer 2

Engine control is manual through Bowden Cable
Only one Idle value 67% +/- 7% NG
More thrust on the ground, more drag in the air
There is no automatic limiting
The FMU will provide a nominal fuel flow schedule according to PCL selections and Altitude

If the PCL is aft the vertical position at the time of manual reversion the engine will have a small noticeable power change

It is recommended to have the PCL at mid power position or lower when pressing the PMS pushbutton

Question 3

Start sequence in Manual mode

Answer 3

Select booster pump “on” Pump L/R
Starter switch to MAN
When oil pressure rises - ignition switch “on”
The light up can occur before fuel flow indication and can be inaccurate. Monitor ITT
When NG reaches 13% move PCL slowly forward
As soon as fuel flow is indicated or ITT increases stop PCL movement until it stops
Continue to move PCL to the Idle indent and NG should read 60% - 74%
Once Engine has reached IDLE NG, return starter, ignition, and fuel pump switches to AUTO

Continue to Monitor ITT within these limits:
Max of 20 secs ITT value between 860 and 910 deg
Max of 5 secs ITT calve between 910 and 1000deg

Shut down engine if the ITT fails to rise or exceeds limits or if NG stabilises below idle. - Carry out ENGINE DRY RUN

Question 4

What will the engine do if you move the PCL too quickly during MAN START

Answer 4

Quick PCL movement during manual START can cause the ITT to exceed limits or cause the engine to surge

Question 5

What will the following warnings indicate? Audible alarm, Attention Getter flashing red, RED FIRE warning displayed on the DWP and MFD?

Answer 5

Engine compartment fire or overheating

Question 6

What will the following warnings indicate? Audible Alarm, Attention Getter, RED OIL caption shown on the DWP together with a RED OIL PRESSURE warning on the MFD

Answer 6

Oil Pressure >199psi
Oil Pressure >130psi for >20 seconds
Oil Pressure < 70psi for > 20 seconds

Question 7

What will the following warnings indicate? Audible alarm, attention getter, OIL TEMP on the MFD?

Answer 7

Oil temp >110deg
Oil temp <-40deg
Oil temp >105deg for >10min

Question 8

What will the following warnings indicate during start sequence? Audible alarm attention getter, ENG ITTon the MFD

Answer 8

ITT is > 1000deg
ITT is >910deg for >5 seconds
ITT is >860def for > 20 seconds

Question 9

What will the following warnings indicate during normal operations? Audible alarm attention getter, RED ENG ITT flashing on the MFD

Answer 9

ITT is > 910deg

ITT is > 860 for > 20 seconds

Question 10

What will the following warnings indicate? Audible alarm, attention getter flashing and RED ENG NG Flashing on the MFD?

Answer 10

Gas generator speed is >104% for > 2 seconds

Question 11

What will the following warnings indicate? Audible alarm, attention getter flashing and RED ENG TORQUE warning on the MFD.

Answer 11

PMS is set to AUTO mode and if either of the following apply:
ENG TORQUE is > 4875 ft lb
ENG TORQUE is > 4202 ft lb for > 20 seconds

Question 12

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER PMS FAULT is displayed on the MFD?

Answer 12

A malfunction in the PMS, but the PMS is still controlling the engine

With engine running and auto controlled through PMS, whenever the STARTER and/or the IGN switches are moved out of their AUTO position, the PMS FAULT caution will also be displayed.

Question 13

What will the following warnings indicate? Audible alarm, attention getter flashing, RED PMS MANUAL, AMBER ENG TORQUE on the MFD

Answer 13

The PMS is in AUTO mode and engine torque is >2830 ft llb for > 5 seconds

Question 14

What will the following warnings indicate during the start sequence? Audible alarm, attention getter flashing and AMBER ENG ITT

Answer 14

ITT is > 910 deg
ITT is > 860 deg for > 5 seconds

The same caution is displayed during normal operations if:
ITT is <350 deg and the aircraft is in flight
ITT is > 860 for > 5 seconds

Question 15

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER ENG NG is flashing on the MFD

Answer 15

ENG is not in start mode for > 4 seconds or is not shut down and the gas generator speed is <50.7%
Engine gas generator speed is >104%

Question 16

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER STARTER is flashing on the MFD

Answer 16

If the starter motor remains engaged after the engine has started.

Question 17

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER I-BYP FAIL flashing on the MFD and AMBER ICE on the DWP.

Answer 17

The INTAKE button is pressed on the DE_ICE panel, but the intake bypass door does not move to its open position within 10 seconds.

Question 18

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER CHIP AGB is displayed on the MFD?

Answer 18

Metal particles have been detected in the accessory gearbox

Question 19

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER OIL PRESS on the MFD.

Answer 19

OIL PRESS > 130psi
OIL PRESS > 125psi for > 55 seconds
OIL PRESS < 90psi for >10 seconds with the engine NG > 72% and g >0
OIL PRESS < 70psi for > 10 seconds

Question 20

What will the following warnings indicate? Audible alarm, attention getter flashing and AMBER OIL TEMP on the MFD

Answer 20

OIL TEMP > 105deg

OIL TEMP < 10deg