Determining reliability design failures to improve landing light features

An aircraft company’s landing lights were experiencing a reduction in illumination leading to excessive maintenance costs. HBM Prenscia Solution performed prediction and stress analyses, lab tests and thermal profiles on sample units to determine the cause of the failure and implemented several design improvements.


The Challenge

An aircraft company was experiencing reliability issues with a reduction in illumination in their landing lights, causing excessive maintenance costs. They needed to determine the cause of the failures and find a solution for the lights on their fleet of aircrafts.

The Solution

Our engineering team performed prediction analysis, electrical stress analysis and thermal analysis on the landing lights to determine a failure cause. After initiating lab tests to observe the actual electrical stresses and thermal profile, a detailed design review and failure analysis report highlighted the cause to be electrical and thermal factors. Design improvements were suggested to reduce the electrical and thermal stresses on the current design.

The Results

The customer implemented several of the recommendations for the landing lights  in their fleet. Design improvements were also implemented for the future generation of the landing lights currently in the design phases. These changes saved the customer in continued maintenance costs, helping to keep their fleet in service.

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