NTSB Identification: LAX83LA182.
The docket is stored on NTSB microfiche number 20741.
Accident occurred Wednesday, April 06, 1983 in CORONA, CA
Aircraft: CESSNA 150H, registration: N7243S
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACFT NOSED OVER DURING THE LANDING ROLL WHILE BEING USED ON A DUAL INSTRUCTIONAL FLIGHT. THE INSTRUCTOR WAS DEMONSTRATING NIGHT LANDING TECHNIQUE TO HER STUDENT. DURING THE LAST LANDING DIRECTIONAL CONTROL WAS LOST WHEN THE NOSEGEAR TOUCHED DOWN. THE ACFT SKIDDED TO THE LEFT OFF THE RUNWAY. THEN THE NOSE GEAR DUG INTO THE SOFT DIRT THE ACFT NOSEDOVER. LATER EXAMINATION OF THE NOSE GEAR ASSEMBLY REVEALED THAT THE COTTER PIN AND NUT (CESSNA PART # MS24665-134 AND AN 310-5) WHICH SECURE THE NOSE GEAR BOLT THROUGH THE AXLE TUBE WERE MISSING. THE BOLT WAS PARTIALLY INSERTED IN THE AXLE TUBE AND THE TIRE WAS PRESSED AGAINST THE INSIDE OF THE NOSE GEAR FORK. THE INSTRUCTOR SAID HER HUSBAND CHANGED THENOSE GEAR TIRE ABOUT 1 MONTH BEFORE THE ACCIDENT.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,NOSE GEAR ASSEMBLY..JAMMED

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,REPLACEMENT..IMPROPER..OTHER PERSON


Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

DIRECTIONAL CONTROL..NOT POSSIBLE..DUAL STUDENT


Contributing Factors

GROUND LOOP/SWERVE..UNCONTROLLED..DUAL STUDENT


Contributing Factors

REMEDIAL ACTION..NOT POSSIBLE..PILOT IN COMMAND(CFI)

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