7 applicability and delimitations describe the

7 Applicability and
Delimitations
Describe the applicability or limitations of the lesson learned:
Who are the potential beneficiaries of your lesson? Where can the
lesson be applicable? What is the level of quality? What additional
activities are necessary? What are the limitations of your lesson?

5. PRELIMINARY VALIDATION RESULTS
The validation of proposed methodology is performed at two occasions with different set ups. This paper is
presenting the results from the industrial experiment. The process for the validation is as follows: participants were
asked to identify the lessons learned from their past experiences. Then they prepared and formulated the
scriptwriting for the LL using the methodology (seven steps and guidelines). In a final step, they recorded the LL
using a video and filled a questionnaire survey.
Three industrial practitioners (a quality leader, product support phase design leader, and a stress analysis leader)
tested the LL methodology. A screenshot from the resulting LL video and a transcript is shown below in Figure 1
and Table 3, respectively. This captured LL is from the serial production and product support phase. The design
leader prepared and explained a lesson-learned story regardin g inspection criteria, following the methodology’s
steps and guidelines, as shown in Table 2.
Fig. 1. Screenshot from the serial production inspection criteria lesson learned video.
This LL from the product support phase is procedural and context-specific knowledge, which needs to be shown
and explained in a visual manner, as shown in Figure 1. In the experiment, the practitioner pointed out the relevant
location on the product four times, as shown in Table 3, to show the circumstances in which the problem and
lesson identification occurred (as in the earlier laboratory experiment). Thus, video-based LL can captures what
happens in the field with detailed richness, as claimed by several authors, such as Wood, et al. (2009) and Ylirisku
and Buur (2007).
Table 3. Captured LL about inspection criteria in a serial production (transcribed from LL video).
Lessons learned statement
During large-scale serial production of cast parts, it would be much too costly to check all the dimensions
specified in the drawings. Therefore, generally a plan for reduced inspection is formulated in association
with the first article inspection review (FAIR). This lesson learned is basically about the criteria that
must be met to accept the reduced inspection plan.
Working context
My name is Stefan Jansson. I have been working at (…) for the last five years. Currently, I work as a
design leader in the Trent 900 Intermediate Compressor Case (ICC) product support team. This ICC is
part of (….)’s Trent 900 engine, which is mounted on the (…..) airplane (pointing to it in the video). The
stakeholders related to this task will be design and quality control personnel at the company or the casting
supplier, which in this case is the American company (….).