# PHMSA Hazmat Incident I-1998120032 — ACETIC ANHYDRIDE — ANN ARBOR, MI

**Citation:** PHMSA Hazmat Incident I-1998120032  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1998-10-15  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1998-10-15 in ANN ARBOR, MI.

## Document text

PHMSA hazardous materials incident report I-1998120032.
Incident date: 1998-10-15.
Location: ANN ARBOR, MI.
Mode: Air.
Carrier/reporter: AIRBORNE FREIGHT CORP.
Shipper: ACROS ORGANICS.
Materials: UN1715; ACETIC ANHYDRIDE; hazard class 8; 1.06 LGA released.
What failed: Liner.
Reported failure causes: Dropped; Dropped.
Reported result: Vapor(Gas) Dispersion.
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://portalpublic.phmsa.dot.gov/analytics/saw.dll?Portal?PortalPath=/shared/Public%20Website%20Pages/_portal/Hazmat%20Incident%20Report%20Search>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `407a78b49db4810e4b4f22dab325fc770434027f211cc43f2c4d3fc33662b9d7`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-26T04:39:11.894Z
- Document slug: `phmsa-hazmat-incident-i-1998120032`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1998120032",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": null,
  "rowCount": 1,
  "carrierReporterNames": [
    "AIRBORNE FREIGHT CORP"
  ],
  "shipperNames": [
    "ACROS ORGANICS"
  ],
  "routes": [
    "110 E ELLSWORTH"
  ],
  "cities": [
    "ANN ARBOR"
  ],
  "states": [
    "MI"
  ],
  "originCities": [],
  "modes": [
    "Air"
  ],
  "materials": [
    {
      "identificationNumber": "UN1715",
      "commodityName": "ACETIC ANHYDRIDE",
      "hazardousClass": "8",
      "quantityReleased": "1.06",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "1.06",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "1.06",
      "innerCapacityUnit": "LGA",
      "innerShipmentCount": "1",
      "innerFailedCount": "1"
    }
  ],
  "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"
}
```