Equipment unit · VIN-decoded · NHTSA vPIC

2023 Blue Bird BB Conventional

1BAKBCJH6PF394498 · Bus - School Bus · BUS
Carriers run under2
23 mo
Inspections4
all-time
OOS inspections0
of 4
First seenFeb 23, 2024
CA
Last seenJan 28, 2026
CA
Inspected under 2 different carriers in 23 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
1BAKBCJH6PF394498
Make
Blue Bird
Model
BB Conventional
Model year
2023
Body class
Bus - School Bus
Vehicle type
BUS
GVWR
Class 6: 19,501 - 26,000 lb (8,845 - 11,794 kg)
Decoded at
Jul 6, 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
1BA

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KBCJH

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1993 or 2023

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

North American serial sequence
394498

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
BLUE BIRD

Prefix basis · 382 decoded VINs at 100.0% prefix purity.

Model
BB Conventional

Prefix basis · 382 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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
BLUE BIRD

Observed directly for this VIN via NHTSA vPIC.

Observed model
BB Conventional

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Bus - School Bus

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
BUS

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 6: 19,501 - 26,000 lb (8,845 - 11,794 kg)

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 · Feb 23, 2024 – Jan 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 28, 2026CAV · Vehicle-only0ZUM SERVICES INC 33735239FKW011/CA
Jan 28, 2026CAV · Vehicle-only0GLENDALE RETIREMENT RESIDENCE LP 18108539FKW011/CA
Feb 18, 2025CAV · Vehicle-only0ZUM SERVICES INC 33735239FKW011/CA
Feb 23, 2024CAV · Vehicle-only0ZUM SERVICES INC 33735239FKW011/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GLENDALE RETIREMENT RESIDENCE LP1810853Jan 28, 2026Jan 28, 20261CA
ZUM SERVICES INC3373523Feb 23, 2024Jan 28, 20263CA
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.
9FKW011CAGLENDALE RETIREMENT RESIDENCE LPJan 28, 2026Jan 28, 20261
9FKW011CAZUM SERVICES INCFeb 23, 2024Jan 28, 20263
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026