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2 flight attendants on an A320 when the brakes automatic apply while being armed for takeoff during the taxi out at cle, oh.
| Attributes | |
| ACN | 512152 |
| Time | |
| Date | 200105 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : cle.airport |
| State Reference | OH |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6000 flight time type : 700 |
| ASRS Report | 512152 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 20000 flight time type : 3000 |
| ASRS Report | 511941 |
| Events | |
| Anomaly | aircraft equipment problem : critical cabin event other non adherence : company policies non adherence : published procedure other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : insufficient time |
| Consequence | other other other |
| Supplementary | |
| Problem Areas | Aircraft Company FAA Flight Crew Human Performance Chart Or Publication |
| Situations | |
| Publication | CHECKLIST |
Narrative:
On taxi out from cle when autobrakes were armed, maximum brakes engaged. Flight attendants were doing pretkof checks when brakes locked and were thrown forward. 2 were injured with 1 removing herself from the trip. On taxi in, after landing checks are completed. Either spoiler handle or throttle above idle are supposed to store spoilers. There is no other check that spoilers are stowed. On taxi out, if spoilers are up, they send a signal to the brakes that a rejected takeoff is being executed. The brakes then go to maximum. After the incident, air carrier instituted a new cockpit crew check to include checking the spoilers down. Supplemental information from acn 511941: normal procedures call for first officer to disarm/stow spoilers after landing. If this step is inadvertently missed, spoiler signal on an A320 remains during engine shutdown and startup. No preflight cockpit checks address spoiler position, so if one step is missed on after landing flow maximum brakes will engage when rejected takeoff is armed for takeoff.
Original NASA ASRS Text
Title: 2 FLT ATTENDANTS ON AN A320 WHEN THE BRAKES AUTO APPLY WHILE BEING ARMED FOR TKOF DURING THE TAXI OUT AT CLE, OH.
Narrative: ON TAXI OUT FROM CLE WHEN AUTOBRAKES WERE ARMED, MAX BRAKES ENGAGED. FLT ATTENDANTS WERE DOING PRETKOF CHKS WHEN BRAKES LOCKED AND WERE THROWN FORWARD. 2 WERE INJURED WITH 1 REMOVING HERSELF FROM THE TRIP. ON TAXI IN, AFTER LNDG CHKS ARE COMPLETED. EITHER SPOILER HANDLE OR THROTTLE ABOVE IDLE ARE SUPPOSED TO STORE SPOILERS. THERE IS NO OTHER CHK THAT SPOILERS ARE STOWED. ON TAXI OUT, IF SPOILERS ARE UP, THEY SEND A SIGNAL TO THE BRAKES THAT A REJECTED TKOF IS BEING EXECUTED. THE BRAKES THEN GO TO MAX. AFTER THE INCIDENT, ACR INSTITUTED A NEW COCKPIT CREW CHK TO INCLUDE CHKING THE SPOILERS DOWN. SUPPLEMENTAL INFO FROM ACN 511941: NORMAL PROCS CALL FOR FO TO DISARM/STOW SPOILERS AFTER LNDG. IF THIS STEP IS INADVERTENTLY MISSED, SPOILER SIGNAL ON AN A320 REMAINS DURING ENG SHUTDOWN AND STARTUP. NO PREFLT COCKPIT CHKS ADDRESS SPOILER POS, SO IF ONE STEP IS MISSED ON AFTER LNDG FLOW MAX BRAKES WILL ENGAGE WHEN REJECTED TKOF IS ARMED FOR TKOF.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.