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Product Management Root Cause Analysis Question: Investigating Otis elevator installation time increase
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Nextsprints

Updated Jan 22, 2025

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Asked at Otis

15 mins

Why has Otis's Gen2 elevator installation time increased by 20% over the last quarter?

Data Analysis Problem Solving Cross-Functional Collaboration Construction Manufacturing Building Technology
Root Cause Analysis Supply Chain Operational Efficiency Safety Protocols Elevator Industry

Introduction

The recent 20% increase in Otis's Gen2 elevator installation time over the last quarter is a significant concern that requires immediate attention. This issue not only impacts operational efficiency but also has potential ripple effects on customer satisfaction, project timelines, and overall company performance. To address this problem, I'll employ a systematic approach to identify, validate, and resolve the root cause while considering both short-term fixes and long-term strategic implications.

Framework overview

This analysis follows a structured approach covering issue identification, hypothesis generation, validation, and solution development.

Step 1

Clarifying Questions (3 minutes)

  • Looking at the timing, I'm thinking there might be seasonal factors at play. Has this increase coincided with any particular season or weather patterns?

Why it matters: Seasonal changes could impact construction schedules and workforce availability. Expected answer: No significant correlation with seasons. Impact on approach: If seasonal, we'd focus on adaptive strategies; if not, we'd look deeper into internal factors.

  • I'm curious about the scope of this issue. Is this increase uniform across all regions and types of installations, or are there specific areas showing more significant delays?

Why it matters: Helps determine if this is a systemic issue or localized to certain regions or project types. Expected answer: Varied impact across regions, with some showing more significant delays. Impact on approach: If localized, we'd focus on region-specific factors; if global, we'd investigate company-wide changes.

  • Considering recent changes, have there been any updates to the Gen2 elevator design or installation process in the last quarter?

Why it matters: Recent changes could directly impact installation times. Expected answer: Minor updates to safety protocols were implemented. Impact on approach: If changes occurred, we'd scrutinize their impact; if not, we'd look at other factors like training or supply chain.

  • Thinking about workforce dynamics, has there been any significant turnover or changes in the installation teams recently?

Why it matters: Changes in personnel could affect efficiency and expertise levels. Expected answer: Some natural turnover, but no major shifts. Impact on approach: High turnover would lead us to focus on training and retention; stability would point us towards other factors.

  • Reflecting on measurement accuracy, has there been any change in how installation time is measured or reported in the last quarter?

Why it matters: Ensures we're comparing apples to apples and not dealing with a data anomaly. Expected answer: No changes in measurement methodology. Impact on approach: If changed, we'd need to reassess the data; if consistent, we'd proceed with our analysis of actual installation times.

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