GPWS SYSTEMS FAIL
(Advisory)

All Ground Proximity Warning function of the EGPWS system are not operational or the EGPWS computer has detected an internal failure.

• Enhanced Ground-Proximity Warning Computer (EGPWC)
• Interface Systems
• Associated Wiring

Advisory Wire/Service Bulletin:

• AW700-34-0516 - Space Based Augmentation System (SBAS) Global Navigation Satellite Sensor Unit (GNSSU) failure in flight

Forum Articles/Infoservice/Newsletter:

• EGPWS Mode 6 Altitude Callout - Navigation - EGPWS - Configuration Strapping for Alternate Mode 6 Aural Altitude Callouts

NOTE 1: Consult the EGPWS - Troubleshooting Guide before replacing the EGPWS

NOTE 2: consult EGPWS - NFF reduction before performing the troubleshooting.

1. Select related CAIMS message below:
   Select an Item3440101AE - INTERFACE - IRS 1 BUS FAULT3440102AE - INTERFACE - GPS 1 BUS FAULT3440103AE - INTERFACE - AIR DATA 1 BUS FAULT3440104AE - INTERFACE - FWC 1 BUS FAULT3440105AE - INTERFACE - RADIO ALT 1 BUS FAULT3440106AE - INTERFACE - SWC 1 BUS FAULT3440107AE - INTERFACE - FMC 1 BUS FAULT3440109AE - INTERFACE - FMC 2 BUS FAULT3440110AE - INTERFACE - IRS 2 BUS FAULT3440111AE - INTERFACE - GPS 2 BUS FAULT3440112AE - INTERFACE - AIR DATA 2 BUS FAULT3440113AE - INTERFACE - SWC 2 BUS FAULT3440114AE - INTERFACE - RADIO ALT 2 BUS FAULT3440115AE - INTERFACE − FWC 2 BUS FAULT3440116AE - INTERFACE − FWC 3 BUS FAULT3440117AE - INTERFACE − PROGRAM PIN FAULT3440118AE - INTERFACE − FLAP INPUT DISC FAULT3440119AE - INTERFACE − LANDING GEAR DISC FAULT3440120AE - INTERFACE - G/S CANCEL DISC FAULT3440124AE - EGPWC INTERNAL FAILURE