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Small aircraft pilot descending to remain below class B airspace is told by ATC that he should be below his present altitude. His GPS and VOR show him to be outside class B.
| Attributes | |
| ACN | 392700 |
| Time | |
| Date | 199801 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ord |
| State Reference | IL |
| Altitude | msl bound lower : 2200 msl bound upper : 2200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 125 flight time total : 13340 flight time type : 400 |
| ASRS Report | 392700 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While descending to get under 1900 ft MSL at 2200 ft the controller stated 'you should be below 1900 ft MSL.' according to both my GPS (IFR certificated) and VOR positioning, I was still outside of the 1900 ft MSL area. Maybe I misinterped what the controller said. I did not hear him say I was in class B.
Original NASA ASRS Text
Title: SMA PLT DSNDING TO REMAIN BELOW CLASS B AIRSPACE IS TOLD BY ATC THAT HE SHOULD BE BELOW HIS PRESENT ALT. HIS GPS AND VOR SHOW HIM TO BE OUTSIDE CLASS B.
Narrative: WHILE DSNDING TO GET UNDER 1900 FT MSL AT 2200 FT THE CTLR STATED 'YOU SHOULD BE BELOW 1900 FT MSL.' ACCORDING TO BOTH MY GPS (IFR CERTIFICATED) AND VOR POSITIONING, I WAS STILL OUTSIDE OF THE 1900 FT MSL AREA. MAYBE I MISINTERPED WHAT THE CTLR SAID. I DID NOT HEAR HIM SAY I WAS IN CLASS B.
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.