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Aircraft technician noted guidance system used to marshal aircraft into the gate is unreliable.
| Attributes | |
| ACN | 1693767 |
| Time | |
| Date | 201910 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | DFW.Airport |
| State Reference | TX |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Person 1 | |
| Function | Technician |
| Events | |
| Anomaly | Ground Event / Encounter Other / Unknown |
Narrative:
Taxi to gate from hangar. Taxi into gate with the use of the auto park/ dgs (digital guidance system). Dgs indicated feet to stop point; after it reached 11 ft. It suddenly went to stop and then displayed too far. When departing aircraft observed that nose wheel had gone past the stop point by approximately 3 ft.the guidance system is unreliable and could cause damage/harm to aircraft; personnel; and equipment. Must be out of calibration that it displayed 11 ft. And then suddenly stop / too far. Prior to the 11 ft. The system was indicating count down of feet normally. Calibrate the dgs system on a schedule and inspect for calibration.
Original NASA ASRS Text
Title: Aircraft Technician noted guidance system used to marshal aircraft into the gate is unreliable.
Narrative: Taxi to gate from hangar. Taxi into gate with the use of the Auto Park/ DGS (Digital Guidance System). DGS indicated feet to stop point; after it reached 11 ft. it suddenly went to stop and then displayed too far. When departing aircraft observed that nose wheel had gone past the stop point by approximately 3 ft.The guidance system is unreliable and could cause damage/harm to aircraft; personnel; and equipment. Must be out of calibration that it displayed 11 ft. and then suddenly stop / too far. Prior to the 11 ft. the system was indicating count down of feet normally. Calibrate the DGS system on a schedule and inspect for calibration.
Data retrieved from NASA's ASRS site 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.