The National Transportation Safety Board did not travel to the scene of this accident.
Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; West Chicago, Illinois
Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
http://registry.faa.gov/N942AC
Aviation Accident Factual Report - National Transportation Safety Board
Location: Chicago, IL
Accident Number: CEN15LA334
Date & Time: 08/02/2015, 1437 CDT
Registration: N942AC
Aircraft: CESSNA 208B
Aircraft Damage: Substantial
Defining Event: Nose over/nose down
Injuries: 2 Minor, 7 None
Flight Conducted Under: Part 135: Air Taxi & Commuter - Scheduled
On August 2, 2015, at 1437 central daylight time, a Cessna 208B, N942AC, operating as Air Choice One (call sign Weber) flight 2627, was substantially damaged when a wind gust lifted it up and it impacted the taxiway while awaiting takeoff clearance at Chicago O'Hare International Airport (ORD), Chicago, Illinois. The two flight crewmembers and five passengers were not injured; two passengers sustained minor injuries. The airplane was registered to and operated by Multi-Aero, Inc., under the provisions of Title 14 Code of Federal Regulations Part 135 as a scheduled domestic passenger flight. Day visual meteorological conditions (VMC) prevailed, and an instrument flight rules (IFR) flight plan had been filed. The airplane had departed the terminal gate at 1410 and was destined for Southeast Iowa Regional Airport (BRL), Burlington, Iowa.
There had been numerous reports of wind shear and microbursts in the immediate vicinity. According to the captain and first officer's statements, they were awaiting takeoff clearance on runway 22L when the control tower asked that they move aside to allow other aircraft to pass. As the captain was making a right turn, a wind gust lifted the right side of the airplane and turned it clockwise. The airplane remained nose down, resting on its left wing for several seconds, then fell back upright coming to rest on all three landing gears. The engine was secured, and all occupants deplaned through the main cabin door. A post-accident examination showed the outboard portion of the left wing was bent up about 30 degrees, the left aileron was damaged, and all three propeller blades were impact damaged.
According to a special weather study conducted by the National Transportation Safety Board, the National Weather Service's (NWS) Surface Analysis Chart valid at the time of the accident depicted a low pressure system over northwestern Michigan, with a cold front extending to the southwest through Wisconsin, Minnesota, into Iowa and then westward into Nebraska. To the east of the low, a warm front extended across northern Wisconsin and Lake Michigan, into north-central Michigan. An outflow boundary associated with thunderstorms was depicted just east of the warm front over extreme eastern Michigan into Lake Huron.
The National Center for Atmospheric Research's (NCAR) Research Application Laboratory's (RAL) regional radar mosaic image 2 minutes prior to the accident depicted a defined line of thunderstorms over Lake Michigan and into northeastern Wisconsin in the vicinity of the warm front and another area over eastern Michigan associated with the outflow boundary. There was another large intense-to-extreme area of echoes observed in the vicinity of ORD moving eastward across northern Illinois at approximately 40 knots.
The NWS Storm Prediction Center (SPC) issued a Convective Outlook at 1116 CDT that indicated the potential for thunderstorms and a greater than 30% probability of wind gusts greater than 50 knots, and a 15% probability of hail 1 inch in diameter or larger, and a 2% probability of a tornado in the Chicago area.
ORD's special weather observation at 1429 indicated the wind to be from 230° at 17 knots, gusting to 24 knots, visibility 10 miles in thunderstorm, a few clouds at 5,000 feet agl, scattered clouds at 7,000 feet, ceiling broken at 9,000 feet, and broken at 20,000 feet, temperature 31° Celsius (C), dew point 19° C, altimeter 29.74 inches of mercury (Hg). Remarks: Peak wind from 240° at 27 knots occurred at 1402 CDT, thunderstorm began at 1428 CDT, frequent lightning in cloud-to-cloud and cloud-to-ground to the west. Thunderstorm west moving east, temperature 31.1° C, dew point 19.4° C.
ORD's special weather observation at 1443 indicated the wind to be from 250° at 16 knots gusting to 45 knots. Runway 10L's visual range (RVR) was 700 feet variable to better than 6,000 feet. Weather: thunderstorm, hail, and moderate rain, scattered clouds at 5,000 feet agl. Cumulonimbus and scattered clouds at 7,000 feet, broken ceiling at 9,000 feet, and broken clouds at 20,000 feet. Temperature, 27° C, dew point, 22° C, altimeter 29.76 inches of Hg. Remarks: Peak wind from 270° at 45 knots occurred at 1440 CDT, rain began at 1942, hail began 1943, thunderstorm began 1928, pressure rising rapidly, frequent lightning cloud-to-cloud and cloud-to-ground overhead, thunderstorm overhead moving east, temperature 26.7° C, dew point 21.7° C.
Pilot Information
Certificate: Airline Transport; Flight Instructor; Commercial
Age: 58, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): Airplane Multi-engine; Airplane Single-engine; Instrument Airplane
Toxicology Performed: No
Medical Certification: Class 1 With Waivers/Limitations
Last FAA Medical Exam: 02/19/2015
Occupational Pilot: Yes
Last Flight Review or Equivalent: 07/25/2015
Flight Time: 5800 hours (Total, all aircraft), 2100 hours (Total, this make and model), 4200 hours (Pilot In Command, all aircraft), 240 hours (Last 90 days, all aircraft), 80 hours (Last 30 days, all aircraft)
Co-Pilot Information
Certificate: Commercial
Age: 23, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 06/22/2015
Occupational Pilot: Yes
Last Flight Review or Equivalent: 06/27/2015
Flight Time: (Estimated) 591 hours (Total, all aircraft), 22 hours (Total, this make and model), 201 hours (Pilot In Command, all aircraft), 175 hours (Last 90 days, all aircraft), 100 hours (Last 30 days, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Manufacturer: CESSNA
Registration: N942AC
Model/Series: 208B
Aircraft Category: Airplane
Year of Manufacture: 2015
Amateur Built: No
Airworthiness Certificate: Commuter; Normal
Serial Number: 208B-5202
Landing Gear Type: Tricycle
Seats: 10
Date/Type of Last Inspection: 07/25/2015, AAIP
Certified Max Gross Wt.: 8842 lbs
Time Since Last Inspection: 55 Hours
Engines: 1 Turbo Prop
Airframe Total Time: 357 Hours at time of accident
Engine Manufacturer: Pratt & Whitney Canada
ELT: C126 installed, not activated
Engine Model/Series: PT6A-140
Registered Owner: Multi-Aero, Inc.
Rated Power: 867 hp
Operator: Multi-Aero, Inc.
Operating Certificate(s) Held: Commuter Air Carrier (135)
Operator Does Business As: Air Choice One, Inc.
Operator Designator Code: MUIA
Meteorological Information and Flight Plan
Conditions at Accident Site: Instrument Conditions
Condition of Light: Day
Observation Facility, Elevation: KORD, 674 ft msl
Observation Time: 1443 CDT
Distance from Accident Site: 2 Nautical Miles
Direction from Accident Site: 313°
Lowest Cloud Condition: Scattered / 5000 ft agl
Temperature/Dew Point: 27°C / 22°C
Lowest Ceiling: Broken / 9000 ft agl
Visibility: 2 Miles
Wind Speed/Gusts, Direction: 16 knots/ 45 knots, 250°
Visibility (RVR):
Altimeter Setting: 29.76 inches Hg
Visibility (RVV):
Precipitation and Obscuration: Moderate - Thunderstorms - Small Hail and/or Snow Pellets; Moderate - Thunderstorms - Rain
Departure Point: Chicago, IL (ORD)
Type of Flight Plan Filed: IFR
Destination: Burlington, IA (BRL)
Type of Clearance: IFR
Departure Time: 1410 CDT
Type of Airspace: Air Traffic Control; Class B
Airport Information
Airport: Chicago O'Hare International (ORD)
Runway Surface Type: Concrete
Airport Elevation: 672 ft
Runway Surface Condition: Dry
Runway Used: 28C
IFR Approach: None
Runway Length/Width: 10801 ft / 200 ft
VFR Approach/Landing: None
Wreckage and Impact Information
Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: 2 Minor, 5 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 Minor, 7 None
Latitude, Longitude: 41.966944, -87.894167 (est)
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