NTSB Identification: CHI85IA039.
The docket is stored on NTSB microfiche number 27041.
Incident occurred Monday, November 05, 1984 in CHICAGO, IL
Aircraft: Rockwell NA-265-25, registration: N97RE
Injuries: 10 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

ACFT CONTROL WAS TEMPORARILY LOST WHEN 36 DEGREES OF FLAPS WERE ADDED DUE TO ICE BUILD-UP BEHIND HEATED LEADING EDGE OF THE WING. RAISING THE FLAPS TO 20 DEGS ALLEVIATED THE CONTROL PROBLEM AND AN UNEVENTFUL LANDING WAS ACCOMPLISHED AT A HIGHER THAN NORMAL AIRSPEED. THE ACFT IS CERTIFIED FOR FLT INTO ICING CONDITIONS AND ALL ANTI-ICE SYSTEMS WERE ON AT THE TIME OF THIS INCIDENT. PLT REPORTS AT THE TIME MENTIONED ICING CONDITIONS RANGING FROM LIGHT RIME TO SEVERE CLEAR ICING. LIGHT RIME ICING WAS ALSO MENTIONED ON THE ATIS BROADCAST.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

ANTI-ICE/DEICE SYSTEM,WING..INADEQUATE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

WING..ICE



Contributing Factors

WEATHER CONDITION..ICING CONDITIONS

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