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ZZZ ramp controller observes new guidance system error when air carrier authority/authorized pushback is initiated at a different gate than indicated and intervenes to stop a ramp conflict with an inbound air carrier into the ramp control area.
| Attributes | |
| ACN | 514302 |
| Time | |
| Date | 200106 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dca.airport |
| State Reference | DC |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : cmi.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air taxi |
| Make Model Name | Jetstream 32 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | ground : taxi |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | pilot : instrument |
| Experience | flight time total : 700 |
| ASRS Report | 514302 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : ground less severe incursion : taxiway other anomaly other |
| Independent Detector | other other : ramp guidance monitor panel sys |
| Resolutory Action | other |
| Supplementary | |
| Problem Areas | Company Airport Maintenance Human Performance |
| Primary Problem | Company |
Narrative:
Air carrier X, a scheduled departure out of ZZZ, requested a push clearance off gate. The equipment in the ramp tower, showed the aircraft to be at gate xo. The aircraft was issued a push clearance and backed off X2. At the time, the ramp controller had another aircraft to pass directly behind X2 wbound, but saw that air carrier X was coming off gate X2 and caught the error. Traffic was light with only a few movements on the ramp. During a busy arrival/departure bank however, we could have had a problem.
Original NASA ASRS Text
Title: ZZZ RAMP CTLR OBSERVES NEW GUIDANCE SYS ERROR WHEN ACR AUTH PUSHBACK IS INITIATED AT A DIFFERENT GATE THAN INDICATED AND INTERVENES TO STOP A RAMP CONFLICT WITH AN INBOUND ACR INTO THE RAMP CTL AREA.
Narrative: ACR X, A SCHEDULED DEP OUT OF ZZZ, REQUESTED A PUSH CLRNC OFF GATE. THE EQUIP IN THE RAMP TWR, SHOWED THE ACFT TO BE AT GATE XO. THE ACFT WAS ISSUED A PUSH CLRNC AND BACKED OFF X2. AT THE TIME, THE RAMP CTLR HAD ANOTHER ACFT TO PASS DIRECTLY BEHIND X2 WBOUND, BUT SAW THAT ACR X WAS COMING OFF GATE X2 AND CAUGHT THE ERROR. TFC WAS LIGHT WITH ONLY A FEW MOVEMENTS ON THE RAMP. DURING A BUSY ARR/DEP BANK HOWEVER, WE COULD HAVE HAD A PROB.
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.