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B747 wingtip contact during parking complete with marshaller and wingtip walker ramp personnel at oak.
| Attributes | |
| ACN | 458366 |
| Time | |
| Date | 199912 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : oak.airport |
| State Reference | CA |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mia.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| 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 pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 18000 flight time type : 9000 |
| ASRS Report | 458366 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 120 flight time total : 8500 flight time type : 2100 |
| ASRS Report | 457752 |
| Events | |
| Anomaly | conflict : ground critical ground encounters other non adherence : company policies other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Air Traffic Incident | other |
Narrative:
While being marshalled into a parking spot, wingtip of aircraft #1 was allowed to travel beneath wingtip of aircraft #2. There was no signal from wing walker or marshaller to avert this situation. Upon inspection, aircraft missed colliding by inches -- no damage to either aircraft. Better coordination of ground crew would have prevented this possible collision. Wingtips are not easily seen from cockpit and depth perception is difficult. Aircraft #2 was improperly parked, which contributed to situation. Supplemental information from acn 457752: I then quickly glanced at the mechanic (who was still staring at the wingtips) who made no motions or gestures as the captain applied brakes. We set brakes, completed all checklists and discovered the top of our wingtip had grazed the bottom of the other aircraft causing no damage. What good are marshallers? Why would an experienced mechanic just stand and watch a taxi incident and say or do nothing? All I can say is -- 23 yrs till retirement!'
Original NASA ASRS Text
Title: B747 WINGTIP CONTACT DURING PARKING COMPLETE WITH MARSHALLER AND WINGTIP WALKER RAMP PERSONNEL AT OAK.
Narrative: WHILE BEING MARSHALLED INTO A PARKING SPOT, WINGTIP OF ACFT #1 WAS ALLOWED TO TRAVEL BENEATH WINGTIP OF ACFT #2. THERE WAS NO SIGNAL FROM WING WALKER OR MARSHALLER TO AVERT THIS SIT. UPON INSPECTION, ACFT MISSED COLLIDING BY INCHES -- NO DAMAGE TO EITHER ACFT. BETTER COORD OF GND CREW WOULD HAVE PREVENTED THIS POSSIBLE COLLISION. WINGTIPS ARE NOT EASILY SEEN FROM COCKPIT AND DEPTH PERCEPTION IS DIFFICULT. ACFT #2 WAS IMPROPERLY PARKED, WHICH CONTRIBUTED TO SIT. SUPPLEMENTAL INFO FROM ACN 457752: I THEN QUICKLY GLANCED AT THE MECH (WHO WAS STILL STARING AT THE WINGTIPS) WHO MADE NO MOTIONS OR GESTURES AS THE CAPT APPLIED BRAKES. WE SET BRAKES, COMPLETED ALL CHKLISTS AND DISCOVERED THE TOP OF OUR WINGTIP HAD GRAZED THE BOTTOM OF THE OTHER ACFT CAUSING NO DAMAGE. WHAT GOOD ARE MARSHALLERS? WHY WOULD AN EXPERIENCED MECH JUST STAND AND WATCH A TAXI INCIDENT AND SAY OR DO NOTHING? ALL I CAN SAY IS -- 23 YRS TILL RETIREMENT!'
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.