CAS CAUTION MESSAGES
CAS CAPTION FAILURE DESCRIPTION PROCEDURE NAME AW139-RFM-4D
1(2)(3)(4) DU OVHT Associated Display Unit overheat DISPLAY UNIT OVERHEATING
Section 3
EMERGENCY AND MALFUNCTION PRO-
1(2)(3)(4) DU DEGRADED On associated Display Unit possible mislead- CEDURES
ing/loss graphics data
DISPLAY UNIT DEGRADED
PFD MESSAGES
MESSAGE FAILURE DESCRIPTION PROCEDURE NAME AW139-RFM-4D
1(2)(3)(4) DU
On associated Display Unit possible misleading/
loss graphics data
DISPLAY UNIT GRAPHIC
MALFUNCTION
Section 3
EMERGENCY AND MALFUNCTION
PROCEDURES
CENTRAL WARNING SYSTEM – GENERAL
The Central Warning System (CWS) provides system alerts to the aircrew
when unsatisfactory aircraft conditions occur.
The system alerts are provided by the Monitor Warning Function (MWF)
software running in each Modular Avionic Unit (MAU) that monitors
continuously the aircraft systems.
The CWS provides the crew with visual indications —including Crew Alerting
System (CAS) messages displayed in the CAS window of the Display Units
— and aural warning messages.
CWS – MAIN COMPONENTS
The CWS main components are:
• two Monitor Warning Function (MWF) software, part of MAU 1 and
MAU 2
• two Master Warning Lights (MWL)