# PHMSA Hazmat Incident E-2018060353 — AIR, COMPRESSED — Denver, CO

**Citation:** PHMSA Hazmat Incident E-2018060353  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2018-06-06  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2018-06-06 in Denver, CO.

## Document text

PHMSA hazardous materials incident report E-2018060353.
Incident date: 2018-06-06.
Location: Denver, CO.
Mode: Air.
Carrier/reporter: UNITED AIRLINES, INC..
Shipper: Aeronet.
Materials: UN1002; AIR, COMPRESSED; hazard class 2.2; 0 released.
Reported result: No Release.
Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.

## Provenance

- Official: Yes
- Source: <https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=tdoVGB8yhNUQFK2Kvs8XZQ%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `29cc8860453e3291c8f2fda7464ee2e6eee869a2bd880255ad2db6c4769c972b`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T17:05:31.197Z
- Document slug: `phmsa-hazmat-incident-e-2018060353`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "E-2018060353",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=tdoVGB8yhNUQFK2Kvs8XZQ%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "UNITED AIRLINES, INC."
  ],
  "shipperNames": [
    "Aeronet"
  ],
  "routes": [
    "United airlnes Cargo Denver"
  ],
  "cities": [
    "Denver"
  ],
  "states": [
    "CO"
  ],
  "originCities": [],
  "modes": [
    "Air"
  ],
  "materials": [
    {
      "identificationNumber": "UN1002",
      "commodityName": "AIR, COMPRESSED",
      "hazardousClass": "2.2",
      "quantityReleased": "0",
      "unitOfMeasure": null
    }
  ],
  "packages": [
    {
      "identificationMarkings": "None",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "0.3342",
      "outerCapacityUnit": "GCF",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    }
  ],
  "reportingRuleContext": [
    "171.15",
    "171.16"
  ],
  "caveat": "Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.",
  "privacyCaveat": "The public CSV excludes preparer contact fields. Event Description is intentionally excluded from normalized records and search output to reduce incidental personal-information risk.",
  "jurisdiction": "US"
}
```