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PA28 pilot using a GPS navigator zoomed into a small scale of class B airspace causing him to lose track of his position and enter class B.
| Attributes | |
| ACN | 581496 |
| Time | |
| Date | 200305 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : vgt.airport |
| State Reference | NV |
| Altitude | msl bound lower : 4500 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : vgt.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : level descent : approach |
| Route In Use | approach : traffic pattern |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine pilot : cfi |
| Experience | flight time last 90 days : 40 flight time total : 510 flight time type : 200 |
| ASRS Report | 581496 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Events | |
| Anomaly | airspace violation : entry non adherence : far |
| Independent Detector | atc equipment other atc equipment : radar/mode c aircraft equipment other aircraft equipment : gps other controllera |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Vgt tower controller reported to me via communication radio (while approaching airport) that I had inadvertently penetrated las class B airspace. The sector I was flying in had a floor of 4500 ft. I was using an apollo mx-20 multifunction display tied into an apollo gx-55 GPS navigation. At the time, I believed the sector in which I was navigating had a floor of 5000 ft MSL. I was backing up GPS navigation with a current copy of the las terminal area chart. I believe the penetration occurred because I was focusing on the mx-20 display which I had zoomed into a fairly small scale and lost situational awareness as to the sector in which I was operating. Henceforth, I will not zoom the mfd in so much, so that I do not lose the position of the sector boundaries in all of the rest of the information displayed on the mfd unit.
Original NASA ASRS Text
Title: PA28 PLT USING A GPS NAVIGATOR ZOOMED INTO A SMALL SCALE OF CLASS B AIRSPACE CAUSING HIM TO LOSE TRACK OF HIS POS AND ENTER CLASS B.
Narrative: VGT TWR CTLR RPTED TO ME VIA COM RADIO (WHILE APCHING ARPT) THAT I HAD INADVERTENTLY PENETRATED LAS CLASS B AIRSPACE. THE SECTOR I WAS FLYING IN HAD A FLOOR OF 4500 FT. I WAS USING AN APOLLO MX-20 MULTIFUNCTION DISPLAY TIED INTO AN APOLLO GX-55 GPS NAV. AT THE TIME, I BELIEVED THE SECTOR IN WHICH I WAS NAVING HAD A FLOOR OF 5000 FT MSL. I WAS BACKING UP GPS NAV WITH A CURRENT COPY OF THE LAS TERMINAL AREA CHART. I BELIEVE THE PENETRATION OCCURRED BECAUSE I WAS FOCUSING ON THE MX-20 DISPLAY WHICH I HAD ZOOMED INTO A FAIRLY SMALL SCALE AND LOST SITUATIONAL AWARENESS AS TO THE SECTOR IN WHICH I WAS OPERATING. HENCEFORTH, I WILL NOT ZOOM THE MFD IN SO MUCH, SO THAT I DO NOT LOSE THE POS OF THE SECTOR BOUNDARIES IN ALL OF THE REST OF THE INFO DISPLAYED ON THE MFD UNIT.
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.