Aerospatiale ATR-42-300 N233RM

Summary

On 18 September 1998 at about 00:33 local time, a Aerospatiale ATR-42-300 registered N233RM, operated by American Eagle, Inc., was involved in an accident near Chicago, Illinois, United States. 16 people were on board and one was seriously injured. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

18 September 1998 at 00:33

Classification

Accident

Location

Chicago, Illinois, United States

Nearest airport

O'hare Int'l (ORD)

Coordinates

Not recorded

Aircraft

Aerospatiale ATR-42-300

Registration

N233RM

Category

Airplane

Engines

2

Operator

American Eagle, Inc.

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Mosinee → Unknown

Aircraft damage

Not recorded

Weather

VMC

Light

Day

NTSB number

CHI98LA351

1 person was seriously injured.

the wake turbulence encountered by Flight 146.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

Flight 146, an ATR-42 was approximately 18 miles from the airport on the ILS 09R approach when it encountered wake turbulence from a Flight 554, a Boeing 737-300, which was vectored onto the approach from the north in front of Flight 146. Radar data showed Flight 554 intercepted the localizer approximately 17.5 miles from the airport while descending from 5,200 feet to 4,800 feet. Flight 146 was at an altitude of about 4,900 feet when the wake turbulence encounter occurred. Separation of the two airplanes when the encounter occurred was approximately 4.8 miles. Vertical acceleration of Flight 146 varied from 2.3679 g's to .5542 g's during the encounter.

Quoted verbatim from the NTSB record.