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C180 pilot initiates evasive maneuver when recognizing that he may have penetrated the sea class B airspace without authority/authorized.
| Attributes | |
| ACN | 600911 |
| Time | |
| Date | 200311 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : sea.vortac |
| State Reference | WA |
| Altitude | msl bound lower : 1500 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | Marginal |
| Weather Elements | Rain |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | general aviation : personal |
| Make Model Name | Cessna 180 Skywagon |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 6000 flight time type : 3000 |
| ASRS Report | 600911 |
| Events | |
| Anomaly | airspace violation : entry non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited penetrated airspace flight crew : returned to intended or assigned course flight crew : took evasive action flight crew : became reoriented |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Departed pierce county VFR for abbotsfort, back course, and headed north. While opening my VFR flight plan with seattle radio in the air, I attempted to maintain cloud clearance for VFR. I was busy and I may have entered the 10000 ft/6000 ft/12 NM southern limits of the seattle class B airspace at 1800-2000 ft. I immediately descended to 1500 ft and headed over vashon island. This route has the tiw class D airspace to the west and the sea class B airspace to the northeast. At 1500 ft below the class B airspace, I may have entered the sea class B airspace on the western edge. I believe the sea class B has expanded of late to the west and I may have touched it. Both of these encroachments were driven by the world of GPS direct and following the magenta line. A strong urge to turn the aircraft toward the destination and skirt various airspace exists. I need to rethink my navigation skills and be more observant of sua.
Original NASA ASRS Text
Title: C180 PLT INITIATES EVASIVE MANEUVER WHEN RECOGNIZING THAT HE MAY HAVE PENETRATED THE SEA CLASS B AIRSPACE WITHOUT AUTH.
Narrative: DEPARTED PIERCE COUNTY VFR FOR ABBOTSFORT, BC, AND HEADED N. WHILE OPENING MY VFR FLT PLAN WITH SEATTLE RADIO IN THE AIR, I ATTEMPTED TO MAINTAIN CLOUD CLRNC FOR VFR. I WAS BUSY AND I MAY HAVE ENTERED THE 10000 FT/6000 FT/12 NM SOUTHERN LIMITS OF THE SEATTLE CLASS B AIRSPACE AT 1800-2000 FT. I IMMEDIATELY DSNDED TO 1500 FT AND HEADED OVER VASHON ISLAND. THIS RTE HAS THE TIW CLASS D AIRSPACE TO THE W AND THE SEA CLASS B AIRSPACE TO THE NE. AT 1500 FT BELOW THE CLASS B AIRSPACE, I MAY HAVE ENTERED THE SEA CLASS B AIRSPACE ON THE WESTERN EDGE. I BELIEVE THE SEA CLASS B HAS EXPANDED OF LATE TO THE W AND I MAY HAVE TOUCHED IT. BOTH OF THESE ENCROACHMENTS WERE DRIVEN BY THE WORLD OF GPS DIRECT AND FOLLOWING THE MAGENTA LINE. A STRONG URGE TO TURN THE ACFT TOWARD THE DEST AND SKIRT VARIOUS AIRSPACE EXISTS. I NEED TO RETHINK MY NAV SKILLS AND BE MORE OBSERVANT OF SUA.
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.