Remote Maintenance Gateway for Aircraft Security Automation
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Solution Overview
Problem
Current aircraft maintenance systems lack remote access capabilities for interactive maintenance tools due to security concerns, limiting the ability to automate tests and perform non-regression functional tests, especially during assembly and operation.
Innovation Solution
A method and device that enable remote execution of instructions on an on-board maintenance device via a communication network, using a filtering and conversion module to authenticate and process commands, ensuring security while allowing remote access to maintenance tools and automating test routines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If remote access to maintenance tools is enabled via communication network, then automation of tests and non-regression functional tests become possible, but security risks increase due to potential unauthorized access
Solution Approach 1:
The patent introduces a gateway device as an intermediary between the remote terminal and the aircraft maintenance system. This gateway filters and validates commands before they reach the maintenance system, enabling remote automation while maintaining security. The gateway acts as a mediator that blocks unauthorized access attempts while allowing legitimate automated test commands to pass through.
Solution Approach 2:
The system performs preliminary actions by pre-configuring the gateway with allowed command patterns and authentication credentials before remote access operations begin. The gateway is pre-programmed with security rules and filtering criteria that automatically validate incoming commands, enabling secure remote automation without requiring real-time human intervention for each command validation.
2Reliability
If fixed physical stations are used for maintenance operations, then security is maintained through physical access control, but operator presence is required continuously which reduces efficiency
Solution Approach 1:
The maintenance system enables self-service operations by allowing automated test routines to execute remotely without continuous operator presence. The gateway device automatically validates and processes commands, and the maintenance system can autonomously perform diagnostic and testing functions based on remotely transmitted instructions, eliminating the need for operators to be physically present at fixed stations for routine operations.
Solution Approach 2:
The gateway serves as an intermediary that enables unattended remote operations while maintaining security. It automatically filters commands, validates authentication, and manages the communication between remote terminals and the aircraft maintenance system, allowing the system to operate autonomously without requiring continuous human supervision at physical stations.
3Ease of operation
If network connection is established for data exchange between aircraft and remote equipment, then remote data access is enabled, but remote control of on-board applications is blocked for security reasons
Solution Approach 1:
The system segments the network communication into two distinct functional layers: a data exchange layer that allows free remote access to maintenance data and diagnostics, and a control layer that requires gateway-mediated validation for application control commands. This segmentation enables remote data access while protecting remote control capabilities through selective filtering at the gateway level.
Solution Approach 2:
The gateway applies different security policies to different types of commands based on their local characteristics. Data access commands are permitted with minimal validation, while control commands undergo strict filtering and authentication. This local quality approach allows the system to be permissive for read operations while restrictive for write/control operations, enabling remote data access without fully enabling remote control.
Data Source
AI summary
A method executes at least one instruction in an on-board maintenance device from a remote system connected to the maintenance device via a communication network. The method includes receiving at least one datum representative of at least one command having a correspondence with the at least one instruction. The method also includes filtering the at least one received datum. In response to the filtering, if the at least one received datum represents a valid command, the method includes converting the at least one received datum to identify the at least one instruction.