Chicago O'hare Iap Airport
Aircraft Accident/Incident Report

Chicago, Illinois 60666
Friday, March 12, 2010 18:04 CST

NTSB Narrative Summary Released at Completion of Accident

The airplane received minor damage when it sustained a lightning strike while on approach. The flightcrew subsequently encountered elevator control binding, although they were able to land without further incident. Both flightcrew members indicated that the control yoke could be manipulated in the aft direction, but that it would not move forward past about 60-percent deflection. A postaccident inspection of the airplane revealed that the tailcone was damaged. Examination of the damage disclosed that the tailcone's light assembly wiring harness and its respective overbraid shielding were thermally damaged. A bulkhead frame was dislodged from its location due to the thermal damage present on the wiring harness. The dislodged bulkhead came to rest on the elevator's bellcrank, which restricted the flightcrew's ability to control the elevator. Subsequent to the incident, the airplane's manufacturer redesigned the tailcone. The new design incorporates a light assembly secured to the tip of the tailcone by an aluminum retaining strap. In this design four diverters are installed on the exterior tailcone skin which are electrically bonded to the metallic retaining strap of the light assembly and to the metallic bonding plate installed in each side of the fairing.

NTSB Probable Cause Narrative

An in-flight encounter with lightning. Contributing to the incident was the damaged and displaced tailcone bulkhead frame that inhibited the full travel of the elevator during approach.

Event Information

Type of Event Incident
Event Date 3/12/2010
Event Day of the Week Friday
Time of Event 1804
Event Time Zone Central Standard Time
Event City Chicago
Event State ILLINOIS
Event Country --
Zipcode of the event site 60666
Event Date Year 2010
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 414950N
Event Location Longitude 0874337W
Event Location Airport Chicago O'Hare IAP
Event Location Nearest Airport ID ORD
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 672
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1840 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID ORD
Elevation of weather observation facility 672
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Night
Lowest Ceiling Height 1000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 8
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 10
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.62
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KORD 130040Z 01011KT 7SM -RA BKN010 OVC016 08/07 A
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 45
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 27976
NTSB Notification Source FAA-AAI-100
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Feb 18 2011 12:15PM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N16561
NTSB Number CEN10IA157
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name EMBRAER
Aircraft Model EMB-145LR
Aircraft Series Identifier --
Aircraft Serial Number 145610
Certified Max Gross Weight 50044
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 50
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Mar 10 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours 15973
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name WELLS FARGO BANK NORTHWEST NA TRUSTEE
Aircraft Owner Street Address 299 S MAIN ST # U1228-120
Aircraft Owner City SALT LAKE CITY
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84111-2263
Operator is an individual? No
Operator Name EXPRESSJET AIRLINES INC
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Houston
Operator State TX
Operator Country USA
Operator Zip code 77067
Operator Code C2XA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
Operator Certificate Number C2XA965W
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code GSP
Departure City Greer
Departure State SC
Departure Country USA
Departure Time 1650
Departure Time Zone CST
Destination Same as Local Flt crash at destination city
Destination Airport Code ORD
Destination City Chicago
Destination State IL
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 21 2010 2:57PM
User who most recently changed record male
Since inspection or accident Time of Accident
Event Location Runway Number and Location 4 R
Runway Length 8075
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --