LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM sensor flagged a fault on the BLACK circuit (Clearance / License Plate) for asset V502821 at site PDX9. Based on the available evidence, the sensor result is rated Inconclusive with a confidence of 35%. The technician's verbal claim of no defect is unsubstantiated — no documentation, screenshots, or photos were provided to confirm the system cleared properly. The original alert may have been a transient fault, a marginal condition, or a real defect that was missed or resolved incidentally, but there is no way to determine which scenario applies given the documentation vacuum.

Photo Evidence: No photos were attached to this work order. The LCM troubleshooting procedure explicitly required photos of each light illuminated, a clear photo of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the five circuits. None of these were provided. This is a critical documentation failure. Without visual evidence, there is no way to confirm lamp condition, wiring integrity, nosebox health, or that the app successfully verified all circuits. This absence alone disqualifies the work order from being considered a compliant closure.

Vendor Compliance: The vendor (COX) demonstrated partial compliance with the troubleshooting procedure. The technician did reference using the Phillips Connect TechAssist app and did follow the correct circuit testing sequence (RED → GREEN → YELLOW → BROWN → BLACK), which aligns with expected procedure flow. However, the work order falls significantly short of full compliance: no app completion screenshot was provided, no photos of illuminated lights were submitted, no nosebox photo was included, and the technician's notes contain noticeable typographical errors ('BALCK' for BLACK, 'WOROKG' for working) suggesting the notes were completed hastily. The feedback provided does not align with any of the required defined feedback categories from the troubleshooting instruction set.

Repair Summary: No repairs were made on this work order. No parts were invoiced — the single line item is a placeholder ('Details to Follow') with no part number, description, or quantity beyond a placeholder value of 1.0. No labor lines indicate any corrective action beyond the diagnostic walkthrough. The alerting BLACK circuit was not repaired, replaced, or otherwise addressed beyond the technician's verbal assertion that it tested properly. If a transient fault was present at the time of the LCM alert, it was not investigated or documented sufficiently to close the loop.

Key Concerns: Several concerns warrant follow-up with the vendor. First, the complete absence of photos and the PCT app verification screenshot is a non-negotiable documentation gap for LCM work orders and should result in the vendor being required to return to the trailer for a proper documented inspection. Second, the placeholder labor line item ('Details to Follow') suggests the work order was submitted prematurely and may not reflect finalized billing or repair scope. Third, the yard location was updated twice (PS243 → PS240), which may indicate the trailer was moved during the process but is not inherently problematic. Fourth, the quality of the technician's written notes — riddled with errors and lacking any specific observations — raises questions about the thoroughness of the inspection. This work order should be flagged for vendor follow-up and should not be accepted as a compliant LCM closure without photo evidence and a PCT verification screenshot.