Aeronautical systems and instruments manufacturing · California

Sonoma EO

Santa Rosa, CA · ~120 workers · 3 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.2
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Sonoma EO runs at 7% of its industry's injury rate - far safer than the typical Aeronautical systems and instruments manufacturing workplace, earning a grade A.

Sonoma EO: 0.2 TCR = 7% of Aeronautical systems and instruments manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Sonoma EO safety composite

Sonoma EO scores strongest on total case rate (tcr) (safer than 88% of same-industry peers) and weakest on fatalities (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

74/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 0.22 per 100 workers

Safer than 88% of industry peers

DART rate
B 0 per 100 workers

Safer than 75% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Rising injury rate

Sonoma EO: 0.0 → 0.7 TCR

Peak year 2020 @ 0.7 TCR · DART/TCR 0× in 2020

Sonoma EO's TCR rose 0.7 from 0.0 in 2017 to 0.7 in 2020. In 2020, DART was 0× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 334511 · Santa Rosa, CA AT/BELOW-IND · MID

Grade A · TCR 0.2 · 7% of ind

  • DART 0.0 DART
  • RANK #3/45
  • PHOTO 4450 E. Fountain Blv…
  • BOOK 3y book
  • INJ 0 inj
  • SIZE ~120 FTE

Nearest TCR peer: 4450 E. Fountain Blvd., Colorado Springs (0.0 TCR gap)

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Sonoma EO in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Sonoma EO averages 0.2 TCR (7% of the Aeronautical systems and instruments manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Sonoma EO TCR series: 2017=0 · 2018=0 · 2020=0.7 · BLS 3.3

Where Sonoma EO falls in its industry

388 Aeronautical systems and instr establishments

Safer than 88% of graded establishments in this industry, whose median TCR is 0.7.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #3 safest of 45 Aeronautical systems and instr employers in California.

Sonoma EO (120 employees, TCR 0.2) among 29 same-industry peers, split at the industry median of 207 employees and a TCR of 0.7 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 05001,0001,5002,000 0246810 Average employees Total Case Rate Sonoma EO
Sonoma EO (120 employees, TCR 0.2) among 29 same-industry peers, split at the industry median of 207 employees and a TCR of 0.7

Sonoma EO has fewer employees than the Aeronautical systems and instruments man median and a lower injury rate than the industry's median TCR of 0.7. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2020 0.7 0.0 0 1 0
2018 0.0 0.0 0 0 0
2017 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

334511 · CA · Santa Rosa

388 Aeronautical systems and instruments manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 344 employers in Santa Rosa, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR 4450 E. Fountain Blvd., Colorado Springs 0.2 TCR
NAICS-TCR HoneywellKS07 0.2 TCR
NAICS-TCR HMDAJ06 0.2 TCR
NAICS-TCR Raytheon_Dallas_TX_ Expressway Site 0.2 TCR
STATE-SIZE Spreckels 120 FTE
STATE-SIZE VF - Healdsburg 120 FTE
STATE-SIZE Ito Brothers Inc. 120 FTE
STATE-SIZE Crown Citrus 120 FTE
CITY-NEAR California Department of Transportation Facility 543 2,891 FTE
CITY-NEAR 2032-02121251 2,209 FTE
CITY-NEAR 2004-00001480 1,970 FTE
CITY-NEAR CA720 SANTA ROSA MEMORIAL HOSPITAL HR 1,806 FTE
NAT-TCR Pineville General Office 0.2 TCR
NAT-TCR Thompson Industrial Services, LLC, Division 32 Vogtle Office 0.2 TCR
NAT-TCR JTS-Jabil, Inc 0.2 TCR
NAT-TCR Vernon Hills, IL - BCU 0.2 TCR
NAT-SIZE Bennington, VT, USA 120 FTE
NAT-SIZE Fabri-Kal Corporation-Mountain Top, PA 120 FTE
NAT-SIZE Morrisville MV 120 FTE
NAT-SIZE Superior Industries - SW 120 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2020, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.