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A320 parked and chocked at the gate rolls backward due to inadequate surface friction between the chocks and the pavement account contamination with deicing fluid.
| Attributes | |
| ACN | 680137 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| State Reference | DC |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 17000 flight time type : 250 |
| ASRS Report | 680137 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | other anomaly |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Weather Company Airport |
| Primary Problem | Ambiguous |
Narrative:
Aircraft parked at gate; wheels chocked. Aircraft rolled backward approximately 4 ft. The chocks were pushed across the pavement. No injuries or damage occurred. WX was clear; light wind; dry. The ramp surface had a light layer of deicing fluid on it left over from the morning. The aircraft rolled due to not enough surface friction between the pavement and the chocks.
Original NASA ASRS Text
Title: A320 PARKED AND CHOCKED AT THE GATE ROLLS BACKWARD DUE TO INADEQUATE SURFACE FRICTION BTWN THE CHOCKS AND THE PAVEMENT ACCOUNT CONTAMINATION WITH DEICING FLUID.
Narrative: ACFT PARKED AT GATE; WHEELS CHOCKED. ACFT ROLLED BACKWARD APPROX 4 FT. THE CHOCKS WERE PUSHED ACROSS THE PAVEMENT. NO INJURIES OR DAMAGE OCCURRED. WX WAS CLR; LIGHT WIND; DRY. THE RAMP SURFACE HAD A LIGHT LAYER OF DEICING FLUID ON IT LEFT OVER FROM THE MORNING. THE ACFT ROLLED DUE TO NOT ENOUGH SURFACE FRICTION BTWN THE PAVEMENT AND THE CHOCKS.
Data retrieved from NASA's ASRS site as of January 2009 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.