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Case Study · Aerospace Manufacturing

A 1,200-Person Aerospace Manufacturer Cut Turnover and Saved Millions by Rebuilding People Operations

Heather MacKay-Mencheski|February 2026|8 min read

$4.8M
Annual Savings from
5-Point Turnover Reduction
24%
Final Turnover Rate
(Down from Untracked)
16 Mo
Stabilization to
Growth Phase
1,200
Employees Across
the Facility
Executive Summary

When a 1,200-person aerospace manufacturer brought in new operational leadership, the transition stalled for nearly a year. Turnover was so poorly tracked that leadership had no visibility into the problem — they simply replaced departing workers with temps. HM Pinnacle was engaged to diagnose the root causes, build measurement infrastructure, and redesign the people operations system. Within 16 months, the organization moved from stabilization into a growth phase, reducing turnover to 24% and generating an estimated $4.8 million in annual savings from a 5-point reduction alone.

A Year of Failing Leadership Changes Exposed a Broken People System

The client — a 1,200-employee aerospace manufacturing facility — had brought in new operational leadership to drive performance. But after nearly a year, the transition was failing. The core problem was invisible: turnover was not being tracked. When employees left, they were simply replaced with temporary workers. No one measured the cost.

HR had become a compliance function, not a strategic one. Of the 8 to 10 HR staff, many actively resisted change. There was no exit interview process, no KPI tracking, no mechanism to surface patterns in attrition or engagement.

$4.8M
At an average salary of $80,000 plus 24% in benefits, every 5-point reduction in turnover translated to approximately $4.8 million in annual savings.
“They weren’t tracking turnover at all — just replacing people with temps and hoping for the best.”
Heather MacKay-Mencheski

Building Visibility, Accountability, and Career Architecture from the Ground Up

HM Pinnacle’s engagement began with diagnostics: exit interviews, skip-level conversations, and baseline KPI development. The goal was not just to reduce turnover, but to make it measurable and actionable.

Key interventions:

Phase 1 (Months 1–9)
Diagnostics & Buy-In
Exit interviews, KPIs established, leadership alignment, 3 quarters to earn organizational trust
Phase 2 (Months 9–16)
Stabilization
HR restructuring, dual career paths implemented, turnover tracking live, initial 5% improvement
Phase 3 (Months 16+)
Growth
Organization transitions from crisis mode to proactive people operations, sustained reduction trajectory

Turnover Dropped to 24% and the Organization Shifted from Survival to Growth

Before After
Turnover not tracked
Turnover measured and managed at 24%
Temps replacing departures
Strategic retention and hiring pipeline
HR as compliance-only function
HR as strategic partner with KPIs
No exit interview process
Systematic exit interviews driving policy
Single career path (management only)
Dual career paths (leadership + technical)
8–10 HR staff resisting change
Restructured HR team aligned with mission
$4.8M
Estimated annual savings from a 5-point turnover reduction alone, based on average salary of $80,000 plus 24% benefits load.
“We created dual career paths so your best people didn’t have to become managers to advance. That changed everything.”
Heather MacKay-Mencheski

What CEOs Can Learn from This Transformation

Key Takeaways

  1. You can’t fix what you don’t measure. This organization had no turnover data. The first step was making the problem visible.
  2. HR must be a strategic function, not a compliance department. Resistant HR staff were blocking organizational change. Leadership had to make hard personnel decisions within HR itself.
  3. Dual career paths retain technical talent. Not everyone wants to manage. Creating a technical advancement track kept high performers who would otherwise leave.
  4. Expect 3 quarters for buy-in. Cultural change takes time. Leadership must sustain visibility and commitment through the initial resistance period.
  5. Quantify the cost of turnover. At $80K salary plus 24% benefits, the financial case for retention investment became undeniable.
  6. Stabilization precedes growth. Trying to grow before the people system is stable amplifies every existing problem.
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Frequently Asked Questions

How long does a typical people operations transformation take?

Most organizations see initial measurable improvement within 6–9 months, with full stabilization occurring between 12–18 months. The aerospace engagement reached growth phase at 16 months.

What does HM Pinnacle do differently from a traditional HR consultant?

HM Pinnacle focuses on people operations as business infrastructure — not just compliance or policy. The approach integrates measurement systems, leadership development, and organizational design.

Do you work with organizations outside manufacturing?

Yes. While this case study focuses on aerospace manufacturing, HM Pinnacle works across industries including healthcare, food production, technology, and professional services.

What is the typical ROI of a people operations engagement?

ROI varies by organization size and turnover levels, but a 5-point reduction in turnover for a 1,200-person facility at average salary of $80K generates approximately $4.8 million in annual savings.

How do you handle resistant HR teams?

The approach starts with alignment conversations and clear expectations. When staff fundamentally resist the strategic direction, leadership must make personnel changes within HR — as happened in this engagement.

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