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A B737 slid after parking at a gate whose parking area was made very slippery by deicing fluid applied to aircraft previously parked at that spot.
| Attributes | |
| ACN | 813562 |
| Time | |
| Date | 200811 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 813562 |
| Events | |
| Anomaly | inflight encounter : weather other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : took evasive action |
| Supplementary | |
| Problem Areas | Environmental Factor Airport Company |
| Primary Problem | Company |
Narrative:
Upon parking received chocks in signal and released parking brake. As agent began to move gate into position for deplaning; aircraft began to roll backwards against the chocks. Applied brakes stopped the aircraft movement; via open window confirmed with ramp people that chocks were in place. Then received call from operations to keep brakes set as ramp was slick with deicing fluid from the morning launch and they had aircraft sliding on the ramp. Cause: slick ramp area with a slope. WX was clear with scattered clouds no snow or ice or rain before arrival 40-42 degrees F; dry runways and txwys and ramp. There was no notification paperwork; gate message that ramp area was slick and apparently at least 1 other aircraft had slid. Suggestions: either a rewrite of airport pages or a notification by gate message when ramp area is contaminated and potential of aircraft sliding against chocks.
Original NASA ASRS Text
Title: A B737 SLID AFTER PARKING AT A GATE WHOSE PARKING AREA WAS MADE VERY SLIPPERY BY DEICING FLUID APPLIED TO AIRCRAFT PREVIOUSLY PARKED AT THAT SPOT.
Narrative: UPON PARKING RECEIVED CHOCKS IN SIGNAL AND RELEASED PARKING BRAKE. AS AGENT BEGAN TO MOVE GATE INTO POS FOR DEPLANING; ACFT BEGAN TO ROLL BACKWARDS AGAINST THE CHOCKS. APPLIED BRAKES STOPPED THE ACFT MOVEMENT; VIA OPEN WINDOW CONFIRMED WITH RAMP PEOPLE THAT CHOCKS WERE IN PLACE. THEN RECEIVED CALL FROM OPS TO KEEP BRAKES SET AS RAMP WAS SLICK WITH DEICING FLUID FROM THE MORNING LAUNCH AND THEY HAD ACFT SLIDING ON THE RAMP. CAUSE: SLICK RAMP AREA WITH A SLOPE. WX WAS CLR WITH SCATTERED CLOUDS NO SNOW OR ICE OR RAIN BEFORE ARR 40-42 DEGS F; DRY RWYS AND TXWYS AND RAMP. THERE WAS NO NOTIFICATION PAPERWORK; GATE MESSAGE THAT RAMP AREA WAS SLICK AND APPARENTLY AT LEAST 1 OTHER ACFT HAD SLID. SUGGESTIONS: EITHER A REWRITE OF ARPT PAGES OR A NOTIFICATION BY GATE MESSAGE WHEN RAMP AREA IS CONTAMINATED AND POTENTIAL OF ACFT SLIDING AGAINST CHOCKS.
Data retrieved from NASA's ASRS site as of May 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.