Sugar Land Municipal Airport
Aircraft Accident/Incident Report

Sugar Land, Texas 77478
Thursday, November 11, 1993 14:10 CST

NTSB Narrative Summary Released at Completion of Accident

ON FINAL APPROACH, THE LANDING GEAR WAS EXTENDED, CHECKED DOWN AND LOCKED, AND THREE GREEN LIGHTS WERE NOTED. THIS WAS CORROBORATED BY THE COCKPIT VOICE RECORDER. WHEN THE AIRPLANE TOUCHED DOWN, THE LEFT MAIN LANDING GEAR EITHER COLLAPSED OR RETRACTED. THE LANDING GEAR ACTUATOR RODS, ROD ENDS, DOWN LOCK ROLLERS, AND CAMS WERE UNDAMAGED. DURING POST-INCIDENT EXAMINATION, THE HYDRAULIC POWER PACK MADE A LOUD NOISE AND HYDRAULIC PRESSURE FLUCTUATED BETWEEN 500 AND 1,200 PSI. NO DISCREPANCIES WERE NOTED WHEN THE HYDRAULIC POWER PACK WAS FUNCTIONALLY TESTED AND INTERNALLY INSPECTED. PROCEDURAL ERRORS WERE MADE THAT MIGHT HAVE INVALIDATED THE TEST RESULTS.

NTSB Probable Cause Narrative

THE PARTIAL FAILURE OF THE HYDRAULIC PUMP (POWER PACK).

Event Information

Type of Event Incident
Event Date 11/11/1993
Event Day of the Week Thursday
Time of Event 1410
Event Time Zone Central Standard Time
Event City SUGAR LAND
Event State TEXAS
Event Country --
Zipcode of the event site 77478
Event Date Year 1993
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SUGAR LAND MUNICIPAL
Event Location Nearest Airport ID SGR
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 83
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1413 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID SGR
Elevation of weather observation facility 1413
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 3000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 21
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 2569
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5050
NTSB Notification Source --
NTSB Notification Date Nov 12 1994 12:00AM
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:45PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N688NE
NTSB Number FTW94IA032
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name FAIRCHILD
Aircraft Model SA227-AC
Aircraft Series Identifier SA227-AC
Aircraft Serial Number AC-688
Certified Max Gross Weight 14600
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 21
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AVLINE, INC.
Aircraft Owner Street Address 1209 ORANGE STREET
Aircraft Owner City WILMINGTON
Aircraft Owner State DE
Aircraft Owner Country
Aircraft Owner Zipcode 19802
Operator is an individual? --
Operator Name CONQUEST AIRLINES CORPORATION
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 2215 REDWOOD AVENUE
Operator City AUSTIN
Operator State TX
Operator Country
Operator Zip code 78723
Operator Code CACA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
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) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code AUS
Departure City AUSTIN
Departure State TX
Departure Country
Departure Time 1330
Departure Time Zone CST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 17
Runway Length 8000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --