# Incident 19790318008769I: Boeing 727222, Seattle, WA, March 18, 1979

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: March 18, 1979, 20:15 local time
- Place: Seattle, WA
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: UAL
- Location: 47.6062° N, 122.3321° W: Placed by OpenAirDocs: center of Seattle, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6062&lon=-122.3321&mi=10
- Aircraft: N7640U, a cancelled registration (https://openairdocs.org/deregistered/N7640U-2007-03-14) (OpenAirDocs)
- Registry model: Boeing 727-222 (registry code 1384073, https://openairdocs.org/model/boeing-727-222) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT9D series (registry code 52054, https://openairdocs.org/engine/pratt-whitney-jt9d-series) (OpenAirDocs)
- Reported make and model: BOEING 727222
- People aboard: 110
- Fatal injuries: 0
- Pilot flight hours: 0 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19790318008769I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

PRESSURIZATION SURGED IN FLIGHT. REPLACED EMERGENCY RELIEF VALVES.

## Other reports on N7640U (2)

Matched to the same aircraft by N-number and date.

- [Incident 19920414018129I](https://openairdocs.org/incident/19920414018129I), Apr 14, 1992: Boeing 727222 (N7640U), Allentown, PA, Minor damage. Aircraft hit jetway on departure from gate. Marshaller and wing walker tried to signal pilot.
- [Incident 19870102013249I](https://openairdocs.org/incident/19870102013249I), Jan 2, 1987: Boeing 727222 (N7640U), Akron, OH. During taxi the left main departed pavement and the aircraft became stuck in the mud.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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