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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The aircraft rolled back after being parked and chocked. The captain was unsuccessful in getting the brakes reset before the aircraft hit cargo equipment bending and denting the flaps. The chocks may have been positioned improperly, too small, the ramp surface too sandy, or a combination of all factors contributed to the problem.
| Attributes | |
| ACN | 326488 |
| Time | |
| Date | 199601 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : roc |
| State Reference | NY |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 11600 flight time type : 1600 |
| ASRS Report | 326488 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 240 flight time total : 4000 flight time type : 1500 |
| ASRS Report | 326493 |
| Events | |
| Anomaly | conflict : ground critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control |
| Consequence | other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
After parking and unloading of passenger, ramp personnel notified captain that the chocks were in place in nosewheel. After the removing parking brake (our normal company procedures) aircraft started rolling backwards. Captain jumped back into seat and applied brakes manually. Trailing edge of left flaps, however, struck ground belt cargo loader. 2 small dents were noticed (on flaps) after equipment was removed. Aircraft was then written up in maintenance log. I think chocks were not installed properly in nosewheel. The chocks in my opinion were too small for the aircraft. They were also placed on a very sandy ramp and may have slid.
Original NASA ASRS Text
Title: THE ACFT ROLLED BACK AFTER BEING PARKED AND CHOCKED. THE CAPT WAS UNSUCCESSFUL IN GETTING THE BRAKES RESET BEFORE THE ACFT HIT CARGO EQUIP BENDING AND DENTING THE FLAPS. THE CHOCKS MAY HAVE BEEN POSITIONED IMPROPERLY, TOO SMALL, THE RAMP SURFACE TOO SANDY, OR A COMBINATION OF ALL FACTORS CONTRIBUTED TO THE PROB.
Narrative: AFTER PARKING AND UNLOADING OF PAX, RAMP PERSONNEL NOTIFIED CAPT THAT THE CHOCKS WERE IN PLACE IN NOSEWHEEL. AFTER THE REMOVING PARKING BRAKE (OUR NORMAL COMPANY PROCS) ACFT STARTED ROLLING BACKWARDS. CAPT JUMPED BACK INTO SEAT AND APPLIED BRAKES MANUALLY. TRAILING EDGE OF L FLAPS, HOWEVER, STRUCK GND BELT CARGO LOADER. 2 SMALL DENTS WERE NOTICED (ON FLAPS) AFTER EQUIP WAS REMOVED. ACFT WAS THEN WRITTEN UP IN MAINT LOG. I THINK CHOCKS WERE NOT INSTALLED PROPERLY IN NOSEWHEEL. THE CHOCKS IN MY OPINION WERE TOO SMALL FOR THE ACFT. THEY WERE ALSO PLACED ON A VERY SANDY RAMP AND MAY HAVE SLID.
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.