Equipment unit · VIN-decoded · NHTSA vPIC

2016 Heil Trailer International

5HTAM4428G7H81877 · Trailer · TRAILER
Carriers run under1
35 mo
Inspections10
all-time
OOS inspections0
of 10
First seenJul 13, 2023
CA
Last seenJun 9, 2026
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5HTAM4428G7H81877
Make
Heil Trailer International
Model
Not decoded
Model year
2016
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 16, 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
5HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AM442

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1986 or 2016

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

North American serial sequence
H81877

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
HEIL TRAILER INTERNATIONAL

Prefix basis · 176 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 176 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
2016

Observed directly for this VIN via NHTSA vPIC.

Observed make
HEIL TRAILER INTERNATIONAL

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

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 13, 2023 – Jun 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 9, 2026CAV · Vehicle-only0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Feb 16, 2026CAII · Walk-around0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Nov 25, 2025CAI · Full0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Nov 19, 2025CAI · Full0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Jun 20, 2025CAI · Full0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Mar 25, 2025CAI · Full0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Jan 16, 2025CAII · Walk-around0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Dec 27, 2024CAI · Full0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Feb 16, 2024CAII · Walk-around0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
Jul 13, 2023CAV · Vehicle-only0WILLIAMS TANK LINES LLC 2290474PJ9514/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WILLIAMS TANK LINES LLC229047Jul 13, 2023Jun 9, 202610CA
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.
4PJ9514CAWILLIAMS TANK LINES LLCJul 13, 2023Jun 9, 202610
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026