Gulfport -Biloxi International Airport
Aircraft Accident/Incident Report

Gulfport, Mississippi 39501
Monday, May 23, 2005 20:30 CDT

NTSB Narrative Summary Released at Completion of Accident

After being cleared to land, the pilot extended the landing gear and set the flaps to full to reduce speed rather than descend at an idle power setting. He observed three green landing gear light indications in the cockpit, and applied "slight" engine power during the landing flare and landed normally. The airplane "rocked" slightly side to side, and when the airplane's full weight was on the main landing gear, the left main landing gear collapsed, followed by the right main landing gear and nose gear. The airplane slid about 400 to 500 feet on the runway before coming to a full stop. The pilot reported that there had been no prior problems with the landing gear, and a recent landing gear inspection had been conducted due to previous slow landing gear extension, retraction, and noise. The slow extension/retraction and noise had been corrected by lubrication since the landing gears' operation had returned to normal after 3 or 4 flights. A mechanic performed postaccident maintenance to repair the landing gear, installing new Brace Assemblies (P/N 38-815125-12 and 38-815125-14). After installing the braces, the mechanic performed retraction tests, and the landing gear system functioned normally. As he was moving the airplane with a tug, he noticed that the right landing gear was about to fold again. He examined the landing gear, and found that the down lock mechanism had not pulled into place, and that the pulley, part number MS20219-2, was split on one side, allowing the cable to run into the split, making the downlock cable fall short of engagement. The pulleys had to be removed to see the split, and that he found the same condition on the left side. Both pulleys and both downlock cables where then replaced, which resolved the landing gear downlock problems. Examination of the airplane's logbook records show the airplane received a 100-hour and Annual inspection on July 31, 2004, about 70 flight hours before the accident. During this inspection the mechanic stated he performed a main landing gear retraction and emergency extension test.

NTSB Probable Cause Narrative

The inadequate maintenance inspection by maintenance personnel which resulted in damaged landing gear pulleys, resulting in the failure of the landing gear downlock to engage, and collapse of the main landing gear during landing.

Event Information

Type of Event Accident
Event Date 5/23/2005
Event Day of the Week Monday
Time of Event 2030
Event Time Zone Central Daylight Time
Event City Gulfport
Event State MISSISSIPPI
Event Country --
Zipcode of the event site 39501
Event Date Year 2005
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 302416N
Event Location Longitude 0890407W
Event Location Airport Gulfport -Biloxi International
Event Location Nearest Airport ID GPT
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 28
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 2053 Central Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID GPT
Elevation of weather observation facility 38
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 21
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) 0
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29.84
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 21959
NTSB Notification Source FAA ATL Comm. Center
NTSB Notification Date May 23 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 25 2007 12:22PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Jackson, Mississippi

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6654Y
NTSB Number MIA05LA108
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Beech
Aircraft Model 58
Aircraft Series Identifier --
Aircraft Serial Number TH-1061
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 4
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 1 2004 12:00AM
Airframe hours since last inspection 70
Airframe Hours 4700
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Garry Lewis
Aircraft Owner Street Address 11646 N Oak Hills Pkwy
Aircraft Owner City Baton Rouge
Aircraft Owner State MS
Aircraft Owner Country USA
Aircraft Owner Zipcode 70810
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code BTR
Departure City Baton Rouge
Departure State LA
Departure Country USA
Departure Time 2000
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code GPT
Destination City Gulfport
Destination State MS
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 20 2007 12:06PM
User who most recently changed record KENJ
Since inspection or accident Time of Accident
Event Location Runway Number and Location 18
Runway Length 5000
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --