FOLLOWING NORMAL LNDG, PLT EXECUTED 180-DEGREE TURN ON RUNWAY, THEN TAXIED TO GATE. NORMAL GATE ARRIVAL MANEUVER IS A RIGHT 180-DEGREE TURN TO PRESENT LEFT SIDE OF ACFT TO GATE. AS ACFT PASSED THROUGH ABOUT 135 DEGREES OF THIS MANEUVER, HYDRAULIC WARNING LIGHTS ILLUMINATED AND BOTH NOSEWHEEL STEERING AND NORMAL BRAKING BECAME INOPERATIVE. PLT ATTEMPTED TO CONTINUE ARC OF TURN WITH DIFFERENTIAL POWER BUT RADIUS HAD INCREASED TO THE POINT THAT LEFT WING CONTACTED TERMINAL ROOF. INVESTIGATION SHOWED A TRAIL OF HYDRAULIC FLUID FROM THE POINT OF THE 180-DEGREE TURN ON THE RUNWAY TO POINT WHERE BRAKING ACTION WAS LOST. NOSEWHEEL STEERING HYD FLEX LINES SHOWED CHAFING OF EXTERNAL REINFORCEMENT BRAIDING AT BEND RADIUS WITH SUBSEQUENT RUPTURE OF WEAKENED TUBING WALL. RECORDS SHOWED 7000 LANDINGS SINCE LINE REPLACEMENT.

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

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

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

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

Contributing Factors

HYDRAULIC SYSTEM,LINE..CHAFED

Contributing Factors

CLEARANCE..INADEQUATE

Contributing Factors

OBJECT..AIRPORT FACILITY

Contributing Factors

MAINTENANCE,INSTALLATION..IMPROPER..COMPANY MAINTENANCE PERSONNEL

Contributing Factors

MAINTENANCE,BALANCING..INADEQUATE..COMPANY MAINTENANCE PERSONNEL

Index for Apr1984 | Index of months