Page:CAB Accident Report, American Airlines Flight 20.pdf/30



Overcast Chicago, base of clouds reported 5000 feet, with top above 10,000 feet. No icing reported in overcast. Base of upper overcast lifting to unlimited through Indianapolis-Cincinnati-Columbus area, with top lower layer estimated 7,000 to 8,000 feet. Light rain—Chicago, Indianapolis, Cincinnati—and spreading through Columbus area. Cloudiness becoming overcast to broken unlimited ceilings, Pittsburgh; and broken clouds, Washington.

The Weather Bureau sequence data reports for various points along the route were as follows: