EMBRAER EMB-145LR near Dayton, OH — 2011-02-01

Probable cause

The pilots' lack of consideration for developing and known weather conditions en route to and at the destination airport, resulting in a runway excursion and subsequent incursion.

NTSB narrative

Prior to the flight landing on runway 6R, airport maintenance crews reported ice on runway 6L and the possibility of ice on runway 6R. A local air traffic controller relayed the information on possible runway conditions on runway 6R to the flight crew prior to landing; there were no braking action advisories in effect. While landing, the airplane departed the left side of runway 6R several hundred feet from the intersection of runway 6R and runway 36, coming to a stop on runway 36 facing northeast. Airport damage consisted of a damaged runway distance remaining marker. There were no injuries to the passengers or crew and the airplane suffered damage to the left main gear door, auxiliary gear door, and the No. 2 main tire. A special weather observation taken after the incident reported wind from 070 at 8 knots, visibility of 7 miles in light freezing rain, an overcast ceiling at 1,900 feet above ground level, a temperature of -4 degrees Celsius, a dew point of -8 degrees Celsius, with the altimeter indicating 30.10 inches of mercury. Freezing rain began about 3 minutes prior to the incident and an accumulation of .01 inches of snow had fallen in the 14 minutes prior to the start of the freezing rain.

Analysis

Primary failure mode

Loss of control

First missed decision gate

BTA2693 should have aborted landing due to reported ice on runway 6R.

NTSB coding

• Runway excursion · Landing-landing roll
• Decision Making / Judgment

Evidence available

• CVR
• 12 docket documents

Docket documents12

• ATC 3 - Attachment 1 - Record of Facility Operation January 31, 2011atc
• ATC 3 - Attachment 13 - KDAY ATC Front Line Manager (FLM) Statementatc
• ATC 3 - Attachment 14 - KDAY ATC Local Controller (LC) Statementatc
• ATC 3 - Attachment 15 - BTA2693 Tire Tracks to left of Runway 6Ratc
• ATC 3 - Attachment 16 - BTA2693 - DAY Distance Remaining Sign Damageatc
• ATC 3 - Attachment 17 - BTA 2693 - Damaged Distance Remaining Sign Base Remaing Sign Baseatc
• ATC 3 - Attachment 2 - Daily Record of Facility Operation - February 16, 2011atc
• ATC 3 - Attachment 3 - KDAY Airfield Diagramatc
• ATC 3 - Attachment 4 - KDAY ILS Runway 6 Approach Procedureatc
• ATC 3 - Attachment 5 - FAA Report of Eventatc
• ATC 3 - Attachment 8 - KDAY ATCT Staffing Statementatc
• Cockpit Voice Recorder 12 - Specialist's Factual Reportcvr

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