# Incident 19780427013979I: Doug DC9, Janesville, WI, April 27, 1978

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 27, 1978, 21:50 local time
- Place: Janesville, WI
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: OZA
- Location: 42.6828° N, 89.0187° W: Placed by OpenAirDocs: center of Janesville, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.6828&lon=-89.0187&mi=10
- Aircraft: N975Z, a cancelled registration (https://openairdocs.org/deregistered/N975Z-2017-04-18) (OpenAirDocs)
- Registry model: Douglas DC9-15 (registry code 3022036, https://openairdocs.org/model/douglas-dc9-15) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT8D-1 (registry code 52044, https://openairdocs.org/engine/pratt-whitney-jt8d-1) (OpenAirDocs)
- Reported make and model: DOUG DC9
- 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/19780427013979I

## Narrative

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

CREW UNABLE TO CONTROL CABIN PRESSURE. DESCENT MADE AND CABIN CONTROL WAS HANDLED MANUALLY AFTER REACHING FL 110.

## Other reports on N975Z (3)

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

- [Incident 19860411018669I](https://openairdocs.org/incident/19860411018669I), Apr 11, 1986: Doug DC915 (N975Z), St Louis, MO. Noise and vibration from nose gear area. Returned and found broken nose gear retraction cable.
- [Incident 19850915050679I](https://openairdocs.org/incident/19850915050679I), Sep 15, 1985: Doug DC915 (N975Z), St Louis, MO. Cabin pressure climbing during cruise. Priority descent made. Teardown report to follow on relay sensor, controller
- [Incident 19801219085319I](https://openairdocs.org/incident/19801219085319I), Dec 19, 1980: Doug DC9 (N975Z), Chicago, IL. Ze flight aborted takeoff due to a left engine oil strainer clogging light. Maintenance cleaned oil screen.

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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