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| Date: | Thursday 13 May 1976 |
| Time: | 17:10 LT |
| Type: |  McDonnell Douglas DC-10-10 |
| Owner/operator: | United Airlines |
| Registration: | N1810U |
| MSN: | 46609/27 |
| Year of manufacture: | 1972 |
| Fatalities: | Fatalities: 1 / Occupants: |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Accident |
| Location: | near Billings, MT -
 United States of America
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | O'Hare International Airport (KORD) - Chicago, IL |
| Seattle-Tacoma International Airport (KSEA) - Seattle, WA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Flight engineer suffered a heart attack and died mid-flight.
Accident investigation:
|
Sources:
NTSB SEA76IS046
https://www.ntsb.gov/Pages/brief.aspx?ev_id=53310&key=0
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Oct-2025 05:32 | somedudesd | Added |
| 11-Oct-2025 05:32 | ASN | Updated [Accident report, ] |
Corrections or additions? ... Edit this accident description
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