Aircraft Maintenance Fall Protection Anchor System

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Solution Overview

Problem

Aircraft maintenance operators face safety risks due to the height of the fuselage crown during maintenance procedures, where falls from the aircraft can result in serious or fatal injuries.

Innovation Solution

The implementation of an aircraft maintenance fall protection system that includes new attachment points on the aircraft for interfacing with a static line, allowing maintenance operators to remain tethered hands-free while moving about the aircraft, with the system capable of supporting and arresting two simultaneous falls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If maintenance operators work on the fuselage crown without fall protection, then ease of operation is improved, but safety and reliability deteriorate due to fall risks

Engineering Contradiction:

Improveease of operationVSAvoidsafety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The fall protection system is divided into separate modular components including attachment points on the aircraft, a portable static line, and operator harnesses. This segmentation allows the safety system to be independently installed and removed without affecting the aircraft structure or maintenance operations, resolving the contradiction between ease of operation and safety.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a fall protection system is installed on the aircraft, then safety is improved, but device complexity increases

Engineering Contradiction:

ImprovesafetyVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The static line is extracted from the aircraft structure and made portable, allowing it to be independently positioned and configured. The attachment points remain integrated into the aircraft while the main fall protection mechanism can be installed or removed as needed, reducing overall system complexity while maintaining safety.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The attachment points are designed to serve multiple functions - they support the aircraft's structural loads during flight and also provide anchor points for fall protection during maintenance. This multi-functionality reduces the need for separate dedicated fall protection attachment structures, thereby reducing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If a static line is installed for fall protection, then safety is improved, but installation time and complexity increase

Engineering Contradiction:

ImprovesafetyVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Attachment points are pre-installed on the aircraft structure during manufacturing or previous maintenance cycles. When fall protection is needed, operators only need to attach the portable static line to these pre-positioned attachment points, dramatically reducing installation time while maintaining safety.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250144455A1Aircraft maintenance fall protection

Publication Date: 2025.05.08 THE BOEING CO

AI summary

Systems, apparatus, articles of manufacture, and methods are disclosed for aircraft maintenance fall protection. An example aircraft maintenance fall protection system includes an anchor couplable to a rotor shaft of an aircraft, the anchor including a flyable fitting configured to be coupled to the rotor shaft during flight and an extension fitting assembly removably couplable to the flyable fitting, the extension fitting assembly to support a tether for a maintenance operator.