Mid Delta Regional Airport
Aircraft Accident/Incident Report

Greenville, Mississippi 38703
Friday, May 6, 2011 2:00 CDT

NTSB Narrative Summary Released at Completion of Accident

A failed utility pipe caused erosion of the soil beneath the reinforced concrete ramp resulting in a void beneath the ramp surface. When the airplane taxied over this area of the ramp, the left main landing gear penetrated the concrete and sank into the void. Without the support of the soil beneath the concrete, the ramp surface was not strong enough to support the accident airplane.

NTSB Probable Cause Narrative

The failure of a utility pipe beneath the ramp surface, which caused a localized void in the soil and resulting reduction in the load bearing capability of the ramp.

Event Information

Type of Event Accident
Event Date 5/6/2011
Event Day of the Week Friday
Time of Event 200
Event Time Zone Central Daylight Time
Event City Greenville
Event State MISSISSIPPI
Event Country --
Zipcode of the event site 38703
Event Date Year 2011
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 332809N
Event Location Longitude 0905901W
Event Location Airport Mid Delta Regional Airport
Event Location Nearest Airport ID GLH
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation 131
Weather Briefing Completeness --
Investigator's weather source Unknown
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions --
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) --
NTSB Notification Source NTSB Regional Office
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Nov 28 2011 3:03PM
User who most recently changed record schd
Basic weather conditions --
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N12221
NTSB Number DCA11FA052
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed Unknown
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 737
Aircraft Series Identifier 800
Aircraft Serial Number 28930
Certified Max Gross Weight --
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 --
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 40491
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Wells Fargo Bank Northwest NA Trustee
Aircraft Owner Street Address --
Aircraft Owner City Salt Lake City
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84111
Operator is an individual? No
Operator Name CONTINENTAL 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 77002
Operator Code CALA
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 CALA014A
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Positioning
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code GLH
Departure City Greenville
Departure State MS
Departure Country USA
Departure Time --
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code IAH
Destination City Houston
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 28 2011 9:40AM
User who most recently changed record benr
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --