When deploying a new Content Update or System Patch to a fleet, individual aircraft may occasionally show a "Sync Interrupted" or "Version Mismatch" status in the Maintenance Terminal. This usually occurs during the hand-off between the Ground Operations Server and the Onboard Content Server (OCS).
Self-Service Diagnostic Steps Before escalating to a Ground Engineer, check the following on the Maint-GUI:
Check Connectivity Status: Verify the aircraft is currently connected to the Gatelink Wi-Fi or 4G/5G Cellular link. Software updates will automatically pause if the signal strength drops below -70 dBm.
Verify Disk Space: Navigate to System > Storage. If the OCS partition has less than 50GB of available space, the new media package will fail to unpack. You may need to "Purge Legacy Content" from the previous cycle.
The "Soft Restart": In the Maintenance Menu, select OCS Control > Restart Content Service. This re-initializes the sync daemon without rebooting the entire IFE system for the passengers.
When a Manual Load is Required If the "Sync Interrupted" error persists after three retry attempts, the delta-file may be corrupted.
Solution: Insert the Update USB Drive into the Master Seat Box (MSB) in the cockpit or the AV rack.
Action: Select "Local Load" from the menu. This bypasses the wireless sync and installs the software directly from the physical media.
Common Error Codes
ERR-404: Package not found on Ground Server (Contact Fleet Ops).
ERR-502: Certificate Expired (Check aircraft system time/date).
ERR-999: Hardware Timeout (Check OCS Server health lights).
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