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A C172 instructor reports flying near but not in phx class B airspace. The aircraft transponder however was reading higher than the actual aircraft altitude.
| Attributes | |
| ACN | 1201829 |
| Time | |
| Date | 201409 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | PHX.Airport |
| State Reference | AZ |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | None |
| Person 1 | |
| Function | Instructor |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 207 Flight Crew Total 1265 Flight Crew Type 705 |
Narrative:
While maneuvering with a student who is rated in the aircraft we got in close proximity to bravo airspace. Never got less than 500 ft below the shelf; but our transponder altitude was reading about 200 ft off of what the actual MSL value was.
Original NASA ASRS Text
Title: A C172 instructor reports flying near but not in PHX Class B airspace. The aircraft transponder however was reading higher than the actual aircraft altitude.
Narrative: While maneuvering with a student who is rated in the aircraft we got in close proximity to bravo airspace. Never got less than 500 FT below the shelf; but our transponder altitude was reading about 200 FT off of what the actual MSL value was.
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.