Aircraft engine overhauling · Connecticut

Twin MRO

South Windsor, CT · ~108 workers · 3 years of OSHA Injury Tracking Application data.

C
Average Safety Record
3.6
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Twin MRO runs at 110% of its industry's injury rate - about level with the typical Aircraft engine overhauling workplace, earning a grade C.

Twin MRO: 3.6 TCR = 110% of Aircraft engine overhauling BLS 3.3 · 3y Form 300A (see methodology below)

Twin MRO safety composite

Twin MRO scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on dart rate (safer than 11%), 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

24/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 3.62 per 100 workers

Safer than 18% of industry peers

DART rate
F 2.88 per 100 workers

Safer than 11% 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

Twin MRO: 1.9 → 2.9 TCR

Peak year 2023 @ 6.1 TCR · DART/TCR 0.8× in 2024

Twin MRO's TCR rose 1.0 from 1.9 in 2022 to 2.9 in 2024. Peak filing year was 2023 at 6.1 TCR. In 2024, DART was 0.8× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 336412 · South Windsor, CT ABOVE-IND · MID

Grade C · TCR 3.6 · 110% of ind

  • DART 2.9 DART
  • RANK #31/54
  • PHOTO GKN Aerospace Chem-t…
  • BOOK 3y book
  • INJ 13 inj
  • SIZE ~108 FTE

Nearest TCR peer: GKN Aerospace Chem-tronics (0.0 TCR gap)

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Twin MRO in the TCR neighbourhood

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

TCR

What this shows Twin MRO averages 3.6 TCR (110% of the Aircraft engine overhauling BLS benchmark).

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

Twin MRO TCR series: 2022=1.9 · 2023=6.1 · 2024=2.9 · BLS 3.3

Where Twin MRO falls in its industry

366 Aircraft engine overhauling establishments

Safer than 18% of graded establishments in this industry, whose median TCR is 1.6.

More dangerous than peersSafer than peers

Narrower to Connecticut alone (the establishments it most directly competes with for workers and contracts): ranked #31 safest of 54 Aircraft engine overhauling employers in Connecticut.

Twin MRO (108 employees, TCR 3.6) among 29 same-industry peers, split at the industry median of 155 employees and a TCR of 1.6 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 02,0004,0006,0008,000 012345 Average employees Total Case Rate Twin MRO
Twin MRO (108 employees, TCR 3.6) among 29 same-industry peers, split at the industry median of 155 employees and a TCR of 1.6

Twin MRO has fewer employees than the Aircraft engine overhauling median and a higher injury rate than the industry's median TCR of 1.6. 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 2.9 2.9 4 0 0
2023 6.1 6.1 7 0 0
2022 1.9 0.0 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

336412 · CT · South Windsor

366 Aircraft engine overhauling employers nationwide with a credible TCR · 7,008 rated employers in Connecticut with headcount on file · 117 employers in South Windsor, CT · 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 GKN Aerospace Chem-tronics 3.6 TCR
NAICS-TCR Component Repair Technologies 3.6 TCR
NAICS-TCR TECT Power - Utica 3.6 TCR
NAICS-TCR Aero Gear, Inc. 3.7 TCR
STATE-SIZE Niagara Bottling, LLC - Bloomfield 108 FTE
STATE-SIZE Medtronic Mystic, CT 108 FTE
STATE-SIZE Torrco Waterbury 108 FTE
STATE-SIZE REG OFF 21 - Northeast 108 FTE
CITY-NEAR 1223 Swn1000 630 FTE
CITY-NEAR 6458-ZSWN 579 FTE
CITY-NEAR Broadridge Customer Communications, LLC 571 FTE
CITY-NEAR New England Mechanical Services, Inc. 413 FTE
NAT-TCR The Stonebrook Convalescent Center, INC. 3.6 TCR
NAT-TCR Harr Toyota 3.6 TCR
NAT-TCR Model Pattern Company dba MP Components 3.6 TCR
NAT-TCR Dover Hydraulics 3.6 TCR
NAT-SIZE S11003 - Azusa MRF 108 FTE
NAT-SIZE Kraemer North America - MN All Others 108 FTE
NAT-SIZE Dave's Fresh Marketplace of Quonset 108 FTE
NAT-SIZE Amcor Specialty Cartons, LLC 108 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. 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.