# Incident 19790831033809I: Boeing 727231, Chicago, IL, August 31, 1979

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 31, 1979, 13:30 local time
- Place: Chicago, IL
- Airport: O'Hare
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: TWA
- Location: 41.8500° N, 87.6501° W: Placed by OpenAirDocs: center of Chicago, IL, within about 9 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.8500&lon=-87.6501&mi=10
- Aircraft: N52309, a cancelled registration (https://openairdocs.org/deregistered/N52309-2014-10-27) (OpenAirDocs)
- Registry model: Boeing 727-231 (registry code 1384079, https://openairdocs.org/model/boeing-727-231) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT8D-1 (registry code 52044, https://openairdocs.org/engine/pratt-whitney-jt8d-1) (OpenAirDocs)
- Reported make and model: BOEING 727231
- People aboard: 52
- 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/19790831033809I

## Narrative

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

CREW EXPERIENCED PRESSURIZATION PROBLEM. SUSPECT PACK WAS FROZEN.

## Other reports on N52309 (5)

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

- [Incident 19921008044399I](https://openairdocs.org/incident/19921008044399I), Oct 8, 1992: Boeing 727231 (N52309), Nashville, TN. Cargo compartment light on. Drop in cabin pressurization. Masks deployed. Insulation blanket wedge in outflow valve.
- [Incident 19900905045599I](https://openairdocs.org/incident/19900905045599I), Sep 5, 1990: Boeing 727231 (N52309), St Louis, MO. NR1 engine fire warning after takeoff. Shutdown and returned. Engine anti-ice tube failed.
- [Incident 19880723036459I](https://openairdocs.org/incident/19880723036459I), Jul 23, 1988: Boeing 727231 (N52309), St Louis, MO. On takeoff, engine oil pressure went to 57 PSI. Aborted takeoff safely. Replaced oil pressure relief valve
- [Incident 19860727050329I](https://openairdocs.org/incident/19860727050329I), Jul 27, 1986: Boeing 727231 (N52309), St Louis, MO. A system hydraulic failure en route. Safe landing, towed to gate. Chaffed line from left wing to spoiler valve.
- [Incident 19820809043149I](https://openairdocs.org/incident/19820809043149I), Aug 9, 1982: Boeing 727231 (N52309), Kansas City, MO. Loud noise in nose on takeoff. Found improperly inflated nose strut, bottomed out on liftoff.

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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