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Pilot of a PA28-235 had leveled off below the floor of class B airspace but during traffic check for inbound traffic he climbed above the 1500 ft floor.
| Attributes | |
| ACN | 403050 |
| Time | |
| Date | 199805 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : jyd |
| State Reference | VA |
| Altitude | msl bound lower : 1520 msl bound upper : 1520 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee Arrow IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 3 flight time total : 567 flight time type : 239 |
| ASRS Report | 403050 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited adverse environment |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I had just departed from jyo en route to winchester, va. I had leveled off at 1200 ft MSL to remain below class B airspace (1500 ft MSL floor in this area). I was monitoring unicom, looking for inbound traffic (2) that had reported their location. I sighted the traffic and altered my course 20-30 degrees to the right to remain clear. At this time, I checked my altitude and saw that I was rapidly approaching 1500 ft MSL. I immediately pushed over, but the altimeter momentarily peaked at 1520 ft MSL. I was very close to the edge of the class B ring, and the bottom of the next ring is 2500 ft MSL. I am not sure if I was actually under the 1500 ft ring when the altitude peaked at 1520 ft. I had set the altitude to field elevation, so I am also not sure of accuracy compared to the iad altimeter setting. I did not immediately look at DME as I continued to watch for traffic. Next time I will check altitude after initial trimming (more often).
Original NASA ASRS Text
Title: PLT OF A PA28-235 HAD LEVELED OFF BELOW THE FLOOR OF CLASS B AIRSPACE BUT DURING TFC CHK FOR INBOUND TFC HE CLBED ABOVE THE 1500 FT FLOOR.
Narrative: I HAD JUST DEPARTED FROM JYO ENRTE TO WINCHESTER, VA. I HAD LEVELED OFF AT 1200 FT MSL TO REMAIN BELOW CLASS B AIRSPACE (1500 FT MSL FLOOR IN THIS AREA). I WAS MONITORING UNICOM, LOOKING FOR INBOUND TFC (2) THAT HAD RPTED THEIR LOCATION. I SIGHTED THE TFC AND ALTERED MY COURSE 20-30 DEGS TO THE R TO REMAIN CLR. AT THIS TIME, I CHKED MY ALT AND SAW THAT I WAS RAPIDLY APCHING 1500 FT MSL. I IMMEDIATELY PUSHED OVER, BUT THE ALTIMETER MOMENTARILY PEAKED AT 1520 FT MSL. I WAS VERY CLOSE TO THE EDGE OF THE CLASS B RING, AND THE BOTTOM OF THE NEXT RING IS 2500 FT MSL. I AM NOT SURE IF I WAS ACTUALLY UNDER THE 1500 FT RING WHEN THE ALT PEAKED AT 1520 FT. I HAD SET THE ALT TO FIELD ELEVATION, SO I AM ALSO NOT SURE OF ACCURACY COMPARED TO THE IAD ALTIMETER SETTING. I DID NOT IMMEDIATELY LOOK AT DME AS I CONTINUED TO WATCH FOR TFC. NEXT TIME I WILL CHK ALT AFTER INITIAL TRIMMING (MORE OFTEN).
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.