AN MD-80 WITH THE FO FLYING REJECTED THE TKOF DUE TO NO NOSE WHEEL STEERING OR RUDDER MOVEMENT WITH PEDAL INPUT; CAUSED BY A STUCK SHUTTLE VALVE.

Date: 2001-03 · Aircraft: MD-80 Series (DC-9-80) Undifferentiated or Other Model · Phase: takeoff

Anomalies: aircraft-equipment-problem-critical|ground-event-encounter-loss-of-aircraft-control

Synopsis

AN MD-80 WITH THE FO FLYING REJECTED THE TKOF DUE TO NO NOSE WHEEL STEERING OR RUDDER MOVEMENT WITH PEDAL INPUT; CAUSED BY A STUCK SHUTTLE VALVE.

Narrative

AFTER POS AND HOLD; FO ASSUMES PF FOR TKOF DURING INITIAL ROLL. FO/PF ANNOUNCES NO RUDDER OR NWS REACTION TO DEFLECTION OF PEDALS. CA COMMANDS ABORT. WHEN FO USES BRAKES-A SLIGHT GRAB IS FELT-THEREAFTER ALL RUDDER AND BRAKE CTL FOR FO/R SIDE IS NORMAL; FO EXERCISED BRAKING AND NWS FOR 10 MINS WITHOUT ANY FURTHER PROBS. DISCUSSION WITH MAINT CTL EXPLAINED A SHUTTLE VALVE/OVERNIGHT BLEED OFF ON THE R SIDE IS NOT COMMON; BUT DOES OCCUR OCCASIONALLY. MAYBE PART OF THE CTL CHK ON THE TAXI CHKLIST SHOULD INDICATE THE FO R SIDE BE CHKED FOR SMOOTH BRAKING AND RUDDER INPUT TO NWS. THIS OCCURANCE WAS A FIRST FOR US AND IT WOULD BE MUCH BETTER TO CHK DURING INITIAL TAXI. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE HYDRAULICS ON THE L WERE SWITCHED TO LOW ABOUT 2200 LBS PRESSURE AND EVERYTHING WAS OPERATING NORMALLY. THE RPTR SAID NO STEERING OR RUDDER DISPLACEMENT WAS FELT OR INDICATED ON THE TKOF ROLL AND THE TKOF WAS REJECTED. THE RPTR SAID HE HAS 8 YRS ON THE MD-80 AND HAD NEVER EXPERIENCED THIS TYPE OF FAILURE. THE RPTR STATED AFTER EXERCISING THE RUDDER AND STEERING ALL WAS NORMAL AND THE MAINT CTLRS EXPLANATION OF A STUCK SHUTTLE VALVE WAS CORRECT.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.