Testing operation of central warning systems
Preliminary requirements
Required Conditions
| Action/Condition | Procedure/Data |
|---|---|
Make sure that the circuit breakers are closed. |
| Designation | CB |
|---|---|
FAN | 2132CB1 |
ICS | 2350CB1 |
BAG LT | 2430CB1 |
FUEL LVL | 2811CB1 |
2811CB2 | |
HYD | 2911CB1 |
GIA COM | 3141CB1 |
GIA SYS | 3141CB2 |
GEA | 3143CB1 |
PFD | 3160CB1 |
MFD | 3160CB2 |
3160CB3 | |
PITOT HTR | 3411CB1 |
3412CB1 | |
3420CB1 | |
XPDR | 3451CB1 |
ECU CH A | 7600CB1 |
ECU CH B | 7600CB2 |
ENG IGN/VLV | 7600CB3 |
ACU MODE | 7600CB4 |
ACU NEUT | 7600CB5 |
ECU RLYS | 7600CB6 |
Connect headsets to the pilot and copilot headset jacks. | |
Install the ground power unit (preferred). | |
Set the BATT switch to the BATT position on the miscellaneous control panel (alternative). |
Support equipment
| Name | Identification/References | Quantity | Remark |
|---|---|---|---|
Headset | H10-13H | 2 | David Clark H10-13H (or equivalent) |
Safety conditions
Use a ground power unit, if available, to prevent draining the battery of its stored electrical power.
Procedure
After a sufficient time, make sure that the messages that follow show on the Primary Flight Display (PFD):
XMSN OIL PRESS
FUEL PRESS
ENG OIL PSI LO
ENGINE OUT
When using battery:
GEN
When using external power:
GEN
BATT OFF
WOG
EXT POWER
Make sure that no other warning, caution, advisory, and status message show on the PFD.
Push the AUD TST softkey on the ENGINE page/TEST PAGE.
Make sure that you hear the tones that follow one after the other:
Master warning tone: "Ping" that repeats three times.
Low rotor RPM tone: continuous warble.
ENGINE OUT: "Engine out" voice message.
ECU FAIL: "ECU Fail" voice message.
Airspeed above VNE: continuous "Ting".
JAR-OPS 150 feet: "150" voice message.
Master caution tone: single "Ping".
ENGINE FIRE: "Engine fire" voice message.
Near a limit: double "Ping".
RPM Annunciator: "RPM" illuminated.
Instrument Fans: Instrument fans operate continuously.
Push AUD TST softkey to stop test.
Requirements after job completion
Required Conditions
| Action/Condition | Procedure/Data |
|---|---|
Remove the ground power unit (if used). | |
Set the BATT switch to the OFF position on the miscellaneous control panel (if used). | |
Disconnect the headsets from the pilot and copilot headset jacks. |
Last updated