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NTSB Report
August 18, 1990 · Mooney M20B · N74745
Winfield, KS
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 18, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Winfield, KS
Aircraft
Mooney M20B
Tail Number
N74745
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI90LA238
THE LEFT MAIN LANDING GEAR COLLAPSED DURING LANDING ROLLOUT AND THE AIRPLANE DEPARTED THE LEFT SIDE OF THE RUNWAY. EXAMINATION OF THE AIRPLANE SHOWED THE LEFT MAIN GEAR RETRACTING TRUSS FAILED AT A WELD, ALLOWING THE GEAR TO COLLAPSE. THE FAILED PART HAS BEEN OBSOLETE SINCE THE ISSUANCE OF AD 73-21-01 WHICH DIRECTED REPLACEMENT OF RETRACTING LINKS ON MODEL M20 AIRPLANES AND REFERRED TO MOONEY SERVICE BULLETIN M20-155. THE BULLETIN FURTHER SPECIFIES THAT THIS AIRCRAFT BY SERIAL NUMBER REQUIRES REPLACEMENT OF THE RETRACTING TRUSSES TO UTILIZE THE NEW LINKS. THE AIRFRAME LOG SHOWED THE AD SIGNED OFF WITH 'NEW RETRACT LINKS' INSTALLED. RIGHT MAIN AND NOSE GEAR TRUSSES WERE ALSO ORIGINAL AND OBSOLETE.
NTSB Probable Cause
NON-COMPLIANCE OF AN AIRWORTHINESS DIRECTIVE BY MAINTENANCE PERSONNEL.
Full Narrative
THE LEFT MAIN LANDING GEAR COLLAPSED DURING LANDING ROLLOUT AND THE AIRPLANE DEPARTED THE LEFT SIDE OF THE RUNWAY. EXAMINATION OF THE AIRPLANE SHOWED THE LEFT MAIN GEAR RETRACTING TRUSS FAILED AT A WELD, ALLOWING THE GEAR TO COLLAPSE. THE FAILED PART HAS BEEN OBSOLETE SINCE THE ISSUANCE OF AD 73-21-01 WHICH DIRECTED REPLACEMENT OF RETRACTING LINKS ON MODEL M20 AIRPLANES AND REFERRED TO MOONEY SERVICE BULLETIN M20-155. THE BULLETIN FURTHER SPECIFIES THAT THIS AIRCRAFT BY SERIAL NUMBER REQUIRES REPLACEMENT OF THE RETRACTING TRUSSES TO UTILIZE THE NEW LINKS. THE AIRFRAME LOG SHOWED THE AD SIGNED OFF WITH 'NEW RETRACT LINKS' INSTALLED. RIGHT MAIN AND NOSE GEAR TRUSSES WERE ALSO ORIGINAL AND OBSOLETE.
Flight
Event TypeAccident
Event Time17:40 CDT
Nearest AirportStrother Field (0nm N)
Runway17
Runway Length5510 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20B
Tail NumberN74745
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A1A · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 57 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind200° @ 21 kt, gusting 27 kt
Visibility15 sm
CeilingBroken clouds 6000 ft
Temperature / Dew Point68 F
Altimeter29.00 inHg
Observation Time22:50
Weather SourceWFAC