# Incident 19890309003999I: Boeing 737201, Dayton, OH, March 9, 1989

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: March 9, 1989, 17:40 local time
- Place: Dayton, OH
- Airport: James M Cox Dayton International
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: PAIA
- Location: 39.9023° N, 84.2194° W: Placed by OpenAirDocs at JAMES M COX DAYTON INTL (DAY), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9023&lon=-84.2194&mi=10
- Aircraft: N217US, a cancelled registration (https://openairdocs.org/deregistered/N217US-2000-07-20) (OpenAirDocs)
- Registry model: Boeing 737-201 (registry code 1384454, https://openairdocs.org/model/boeing-737-201) (OpenAirDocs)
- Reported make and model: BOEING 737201
- People aboard: 82
- Fatal injuries: 0
- Pilot flight hours: 12,800 total, 2,500 in this make and model
- NTSB investigation: [NTSB ATL89IA099](https://openairdocs.org/ntsb/ATL89IA099) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19890309003999I

## Narrative

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

LOST CONTROL OF PRESSURIZATION SYSTEM. EMERGENCY DESCENT. FOUND A FAULTY OUTFLOW VALVE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ATL89IA099](https://openairdocs.org/ntsb/ATL89IA099), Mar 9, 1989: Boeing 737-201 (N217US), Dayton, OH, incident, no damage. Probable cause: AN EXCESSIVELY WORN OUTFLOW VALVE IN THE CABIN EVIRONMENTAL/PRESSURIZATION SYSTEM THAT RESULTED IN A RAPID CABIN DEPRESSURIZATION.

## Other reports on N217US (2)

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

- [Incident 19980925038689I](https://openairdocs.org/incident/19980925038689I), Sep 25, 1998: Boeing 737201 (N217US), El Paso, TX. (-5) 2 - 1/2 Inch hydraulic chaffed thru causing loss of -a- system hydraulic fluid. Location was right hand aft wing spar inboard of #2 engine pylon. Crew…
- [Accident 19970504008399A](https://openairdocs.org/incident/19970504008399A), May 4, 1997: Boeing 737201 (N217US), Denver, CO. Aircraft parked on ramp, flight attendant fell from forward entrance door onto ramp. (.4)the parked airplane was ready for pushback when the 'b' flight…

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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