Aircraft assemblies, subassemblies, and parts (except engines) manufacturing · California

Mason Electric Company

Sylmar, CA · ~317 workers · 7 years of OSHA Injury Tracking Application data.

C
Average Safety Record
3.9
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Mason Electric Company runs at 119% of its industry's injury rate - about level with the typical Aircraft assemblies, subassemblies, and parts (except engines) manufacturing workplace, earning a grade C.

Mason Electric Company: 3.9 TCR = 119% of Aircraft assemblies, subassemblies, and parts (except engines) manufacturing BLS 3.3 · 7y Form 300A (see methodology below)

Mason Electric Company safety composite

Mason Electric Company scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on total case rate (tcr) (safer than 19%), 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).

F

32/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 3.93 per 100 workers

Safer than 19% of industry peers

DART rate
D 1.1 per 100 workers

Safer than 35% 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%).

TCR Δ

−2.2

2018→2024

Mason Electric Company injury rate improved

Mason Electric Company's TCR fell 2.2 from 3.3 in 2018 to 1.1 in 2024. Peak filing year was 2023 at 8.4 TCR. In 2024, DART was 0.28× this establishment's average TCR (severity share of cases).

2018=3.3 · 2019=1.8 · 2020=2.4 · 2021=4.4 · 2022=6.1 · 2023=8.4 · 2024=1.1

OSHA ITA Form 300A scorecard

Establishment book 336413 · Sylmar, CA ABOVE-IND · MID

Grade C · TCR 3.9 · 119% of ind

  • DART 1.1 DART
  • RANK #78/104
  • PHOTO DRT Aerospace- Meriden
  • BOOK 7y book
  • INJ 67 inj
  • SIZE ~317 FTE

Nearest TCR peer: DRT Aerospace- Meriden (0.0 TCR gap)

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Mason Electric Company in the TCR neighbourhood

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

TCR

What this shows Mason Electric Company averages 3.9 TCR (119% of the Aircraft assemblies, subassemblies, and parts (except engines) manufacturing BLS benchmark).

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

Mason Electric Company TCR series: 2018=3.3 · 2019=1.8 · 2020=2.4 · 2021=4.4 · 2022=6.1 · 2023=8.4 · 2024=1.1 · BLS 3.3

Where Mason Electric Company falls in its industry

650 Aircraft assemblies, subassemb establishments

Safer than 19% of graded establishments in this industry, whose median TCR is 1.9.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #78 safest of 104 Aircraft assemblies, subassemb employers in California.

Mason Electric Company (317 employees, TCR 3.9) among 29 same-industry peers, split at the industry median of 130 employees and a TCR of 1.9 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 Mason Electric Company
Mason Electric Company (317 employees, TCR 3.9) among 29 same-industry peers, split at the industry median of 130 employees and a TCR of 1.9

Mason Electric Company has more employees than the Aircraft assemblies, subassemblies, and median and a higher injury rate than the industry's median TCR of 1.9. 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
2024 1.1 1.1 3 0 0
2023 8.4 2.6 16 10 0
2022 6.1 3.0 12 6 0
2021 4.4 1.7 9 4 0
2020 2.4 0.6 8 0 0
2019 1.8 1.3 6 1 0
2018 3.3 2.3 13 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

336413 · CA · Sylmar

650 Aircraft assemblies, subassemblies, and parts (except engines) manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 112 employers in Sylmar, 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 DRT Aerospace- Meriden 3.9 TCR
NAICS-TCR Magellan Aerospace - Haverhill 4.0 TCR
NAICS-TCR Amphenol Griffith Enterprises--Cottonwood 4.0 TCR
NAICS-TCR Kessington LLC 3.9 TCR
STATE-SIZE Mininger Farms 317 FTE
STATE-SIZE Main Establishment 317 FTE
STATE-SIZE Service West Inc. 317 FTE
STATE-SIZE Mojave 317 FTE
CITY-NEAR Olive View-UCLA Medical Center 2,600 FTE
CITY-NEAR CRM Sylmar CA 1,331 FTE
CITY-NEAR California Department of Transportation Facility 405 1,319 FTE
CITY-NEAR CN Sylmar 1,270 FTE
NAT-TCR Mueller Inc. 3.9 TCR
NAT-TCR Harris Steel Company 3.9 TCR
NAT-TCR Ndx Keller Laboratories 3.9 TCR
NAT-TCR S09911 - Dulles MRF 3.9 TCR
NAT-SIZE Patheon API, Inc. 317 FTE
NAT-SIZE Comprehensive Energy Services, Inc. 317 FTE
NAT-SIZE Bancroft Bag 317 FTE
NAT-SIZE Foodservice Eastern PA - 0551 317 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: 2024, 2023, 2022, 2021, 2020, 2019, 2018. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.