# Incident 19810630044569I: Boeing 727232, Chicago, IL, June 30, 1981

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 30, 1981, 16:38 local time
- Place: Chicago, IL
- Airport: Ohare
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: Air carrier (Part 121)
- Operator: DALA
- 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: N478DA, a cancelled registration (https://openairdocs.org/deregistered/N478DA-2000-04-18) (OpenAirDocs)
- Registry model: Boeing 727-232 (registry code 1384082, https://openairdocs.org/model/boeing-727-232) (OpenAirDocs)
- Reported make and model: BOEING 727232
- People aboard: 55
- 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/19810630044569I

## Narrative

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

ZA DURING CLIMB NO 2 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED. FLIGHT RETURNED. DEACTIVED BAD BYPASS SWITCH.

## Other reports on N478DA (3)

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

- [Incident 19950612022999I](https://openairdocs.org/incident/19950612022999I), Jun 12, 1995: Boeing 727232 (N478DA), Atlanta, GA. NR2 engine oil bypass light came on. Returned. Engine oil had high carbon content. Source as yet unknown.
- [Incident 19891022063939I](https://openairdocs.org/incident/19891022063939I), Oct 22, 1989: Boeing 727232 (N478DA), Sarasota - Brad, FL, Minor damage. Hit tail light of parked twa aircraft while taxiing. Twa was parked outside normal area due to airport renovation.
- [Incident 19780820049419I](https://openairdocs.org/incident/19780820049419I), Aug 20, 1978: Boeing 727 (N478DA), Rome, GA. Probable bird injestion caused fumes in cockpit. Odor smelled like plastic or engine oil. No defects found

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.