Equipment unit · VIN-decoded · NHTSA vPIC

1981 Kenworth W900

1XKWD29X7BS192491 · Truck-Tractor · TRUCK
Carriers run under1
14 mo
Inspections5
all-time
OOS inspections2
of 5
First seenJul 10, 2024
AK
Last seenSep 3, 2025
AK
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKWD29X7BS192491
Make
Kenworth
Model
W900
Model year
1981
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
WD29X

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1981 or 2011

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

North American serial sequence
192491

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
1981

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
W900

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 10, 2024 – Sep 3, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 3, 2025AKIII · Driver-only1ALASKA FRONTIER SERVICES LLC 1666108KDC521/AK
Aug 5, 2025AKIII · Driver-only1ALASKA FRONTIER SERVICES LLC 1666108KDC521/AK
May 14, 2025AKI · Full3OOSALASKA FRONTIER SERVICES LLC 1666108KDC521/AK
Dec 23, 2024AKIII · Driver-only0ALASKA FRONTIER SERVICES LLC 1666108KDC521/AK
Jul 10, 2024AKI · Full11OOSALASKA FRONTIER SERVICES LLC 1666108KDC521/AK
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALASKA FRONTIER SERVICES LLC1666108Jul 10, 2024Sep 3, 20255AK
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.
KDC521AKALASKA FRONTIER SERVICES LLCJul 10, 2024Sep 3, 20255
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026