 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of medium large transport completing checklist releases brakes but chocks are not in place. Aircraft rolls but does not damage or injure even with jetway in place and entry door opened.
| Attributes | |
| ACN | 371096 |
| Time | |
| Date | 199706 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lnk |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 200 |
| ASRS Report | 371096 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
I pulled in to the gate marshalled by only 1 guide man. The boarding bridge was moved into position and entry door was opened. At this point I called for the parking checklist. 1 challenge is: 'parking brake.' the response is 'brakes released,' and I released the brakes. The chocks were not in and the aircraft rolled back 3-4 ft before I applied the brakes. Fortunately the aircraft did not hit any object. There was no damage or injury. Releasing the brakes without verifying that the chocks are in place is not in any way normal behavior for me. The boarding bridge is not supposed to move into position until after the chocks are in place, at which time the bridge driver gets clearance to position the bridge in place. The only thing I can come up with is that with the bridge in place I subconsciously assumed the chocks were in. Chalk it up to a 'brain cramp.' whatever, the old adage: it's not parked until it's parked, is still true.
Original NASA ASRS Text
Title: FLC OF MLG COMPLETING CHKLIST RELEASES BRAKES BUT CHOCKS ARE NOT IN PLACE. ACFT ROLLS BUT DOES NOT DAMAGE OR INJURE EVEN WITH JETWAY IN PLACE AND ENTRY DOOR OPENED.
Narrative: I PULLED IN TO THE GATE MARSHALLED BY ONLY 1 GUIDE MAN. THE BOARDING BRIDGE WAS MOVED INTO POS AND ENTRY DOOR WAS OPENED. AT THIS POINT I CALLED FOR THE PARKING CHKLIST. 1 CHALLENGE IS: 'PARKING BRAKE.' THE RESPONSE IS 'BRAKES RELEASED,' AND I RELEASED THE BRAKES. THE CHOCKS WERE NOT IN AND THE ACFT ROLLED BACK 3-4 FT BEFORE I APPLIED THE BRAKES. FORTUNATELY THE ACFT DID NOT HIT ANY OBJECT. THERE WAS NO DAMAGE OR INJURY. RELEASING THE BRAKES WITHOUT VERIFYING THAT THE CHOCKS ARE IN PLACE IS NOT IN ANY WAY NORMAL BEHAVIOR FOR ME. THE BOARDING BRIDGE IS NOT SUPPOSED TO MOVE INTO POS UNTIL AFTER THE CHOCKS ARE IN PLACE, AT WHICH TIME THE BRIDGE DRIVER GETS CLRNC TO POS THE BRIDGE IN PLACE. THE ONLY THING I CAN COME UP WITH IS THAT WITH THE BRIDGE IN PLACE I SUBCONSCIOUSLY ASSUMED THE CHOCKS WERE IN. CHALK IT UP TO A 'BRAIN CRAMP.' WHATEVER, THE OLD ADAGE: IT'S NOT PARKED UNTIL IT'S PARKED, IS STILL TRUE.
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.