LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM issued a Defect Detected alert on the BLACK circuit (Clearance / License Plate) for trailer WV2501260 at site ORD2. Based on the available evidence, the sensor result is rated Inconclusive with 42% confidence. The technician verbally confirmed no defect exists and PCT corroborated this finding (Ref #129371), which would normally support a clean 'No Defect' determination. However, the complete absence of photographic documentation and the billing of entirely unrelated line items introduce enough doubt to prevent a confident verdict in either direction. The LCM sensor may have generated a spurious alert, or the defect may have been intermittent and self-resolved prior to inspection.

Photo Evidence: No photographs were attached to this work order. The LCM troubleshooting procedure explicitly requires photos of each light illuminated, a clear nosebox wiring photo, and a TechAssist app screenshot showing a green 'Verified' status beside each of the five circuits. None of these were provided. This is a significant compliance gap — without visual confirmation of functioning lights, the nosebox condition, or a TechAssist completion screenshot, the technician's verbal assertion of 'all lights good' cannot be independently verified. This alone is sufficient reason to flag the work order as non-compliant.

Vendor Compliance: The vendor (TA) partially followed the LCM troubleshooting procedure. The technician did report using the TechAssist app to confirm circuit status and did call PCT to verify on their end, which aligns with the expected procedure for a 'no defect found' outcome. However, the technician failed to provide any of the required documentation: no photos of illuminated lights, no nosebox photo, and no TechAssist app screenshot showing 'Verified' status on all five circuits. The notes are also poorly written and difficult to parse, with no specific feedback drawn from the required failure category list beyond a general 'all lights good' statement. The technician did correctly identify and invoke the PCT confirmation pathway, which is a positive procedural step.

Repair Summary: No repairs were made to the trailer's lighting system, which is consistent with a 'no fault found' outcome. The line items billed, however, are entirely incongruous with a lighting inspection: they include an Amazon PCT sensor activation (tire pressure speed sensor), standard service labor, a shop supply/environmental fee, and lot service hourly labor categorized under aerodynamic devices. None of these line items relate to the BLACK (Clearance/License Plate) circuit or to any lighting component. It is unclear whether these charges belong to this work order, were misapplied, or reflect services performed on a different system or asset. No compliant or non-compliant lamp brands can be assessed since no parts were replaced.

Key Concerns: There are several red flags on this work order that warrant follow-up. First, the complete absence of photos is a direct violation of the LCM troubleshooting protocol and makes independent verification impossible. Second, the line items billed are wholly unrelated to trailer lighting — a tire pressure sensor activation and aerodynamic/lot-labor charges have no business appearing on an LCM lighting alert work order, suggesting either billing misapplication or that the tech used this WO as a catch-all for unrelated services. Third, the technician notes are difficult to interpret due to significant typographical errors, which reduces confidence in the accuracy of the reported findings. Finally, the PCT reference number (129371) is a positive data point and should be cross-referenced with PCT records to confirm the trailer and circuit were actually verified. This work order should be returned to the vendor for photo documentation before being fully accepted.