Equipment unit · VIN-decoded · NHTSA vPIC

2019 Iowa Steel Fabrication Iowa Steel Fabrication, LLC.

1Z9M1AA2XKA448422 · Trailer · TRAILER
Carriers run under2
11 mo
Inspections5
all-time
OOS inspections1
of 5
First seenJul 9, 2025
NM
Last seenJun 25, 2026
OK
Inspected under 2 different carriers in 11 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1Z9M1AA2XKA448422
Make
Iowa Steel Fabrication
Model
Iowa Steel Fabrication, LLC.
Model year
2019
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 28, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1Z9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
M1AA2

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1989 or 2019

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
448422

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
IOWA STEEL FABRICATION

Prefix basis · 90 decoded VINs at 100.0% prefix purity.

Model
Iowa Steel Fabrication, LLC.

Prefix basis · 90 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
IOWA STEEL FABRICATION

Observed directly for this VIN via NHTSA vPIC.

Observed model
Iowa Steel Fabrication, LLC.

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 9, 2025 – Jun 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 25, 2026OKII · Walk-around1TRANSPORT DYNAMICS LLC 13015729AA8H4/AZ
Jan 5, 2026NMII · Walk-around0SUBURBAN PROPANE LP 2146957480FTJ/NM
Nov 19, 2025AZII · Walk-around2OOSSUBURBAN PROPANE LP 2146957480FTJ/NM
Nov 18, 2025NMII · Walk-around0SUBURBAN PROPANE LP 2146957480FTJ/NM
Jul 9, 2025NMII · Walk-around1SUBURBAN PROPANE LP 2146957480FTJ/NM
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TRANSPORT DYNAMICS LLC1301572Jun 25, 2026Jun 25, 20261AZ
SUBURBAN PROPANE LP214695Jul 9, 2025Jan 5, 20264NJ
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
9AA8H4AZ2TRANSPORT DYNAMICS LLCJun 25, 2026Jun 25, 20261
7480FTJNMSUBURBAN PROPANE LPJul 9, 2025Jan 5, 20264
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026