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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Private pilot of a cessna 172 accidentally cut through the corner of class C airspace and subsequently failed to report base leg in approaching to land in class D airspace. Since the aircraft had no operable transponder, ATC needed to have key position reports from the pilot to help keep track of reporter's aircraft.
| Attributes | |
| ACN | 351950 |
| Time | |
| Date | 199611 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sdf airport : bqm |
| State Reference | KY |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lou tower : bqm |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 5 flight time total : 195 flight time type : 195 |
| ASRS Report | 351950 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Leaving lou (bowman) and climbing to cruise altitude of 3000 ft MSL, I clipped the lower edge of the upper ring of the sdf class C airspace. Aircraft had no transponder due to malfunction so I don't know if sdf was even aware of infraction. WX was about 5 degrees C, clear and windy, and climb was more rapid than I was used to lately. Lou lies in a niche in sdf airspace, but floor of class C is 2000 ft. Lou is class D. Upon arrival at bak (class D) controller informed me after landing I had not called base (base leg) and I assume had meant I was not cleared to land. I had understood on approach to airfield to 'fly left base for runway 32 and cleared to land,' so I did not see any necessity to call base leg upon landing. Once at bak I picked up a passenger and did sightseeing in the area. Controller said something to effect of 'frequency change approved, leaving class D airspace.' later, I dropped passenger back off at bak. Upon departure, I realized controller said to '...report leaving class D airspace.' (I had not done this previously.) I don't know if any of this stuff is a big deal or not, but some controllers may be more sensitive than others. Overall, I have found them to be extremely courteous and professional and helpful.
Original NASA ASRS Text
Title: PVT PLT OF A CESSNA 172 ACCIDENTALLY CUT THROUGH THE CORNER OF CLASS C AIRSPACE AND SUBSEQUENTLY FAILED TO RPT BASE LEG IN APCHING TO LAND IN CLASS D AIRSPACE. SINCE THE ACFT HAD NO OPERABLE XPONDER, ATC NEEDED TO HAVE KEY POS RPTS FROM THE PLT TO HELP KEEP TRACK OF RPTR'S ACFT.
Narrative: LEAVING LOU (BOWMAN) AND CLBING TO CRUISE ALT OF 3000 FT MSL, I CLIPPED THE LOWER EDGE OF THE UPPER RING OF THE SDF CLASS C AIRSPACE. ACFT HAD NO XPONDER DUE TO MALFUNCTION SO I DON'T KNOW IF SDF WAS EVEN AWARE OF INFRACTION. WX WAS ABOUT 5 DEGS C, CLR AND WINDY, AND CLB WAS MORE RAPID THAN I WAS USED TO LATELY. LOU LIES IN A NICHE IN SDF AIRSPACE, BUT FLOOR OF CLASS C IS 2000 FT. LOU IS CLASS D. UPON ARR AT BAK (CLASS D) CTLR INFORMED ME AFTER LNDG I HAD NOT CALLED BASE (BASE LEG) AND I ASSUME HAD MEANT I WAS NOT CLRED TO LAND. I HAD UNDERSTOOD ON APCH TO AIRFIELD TO 'FLY L BASE FOR RWY 32 AND CLRED TO LAND,' SO I DID NOT SEE ANY NECESSITY TO CALL BASE LEG UPON LNDG. ONCE AT BAK I PICKED UP A PAX AND DID SIGHTSEEING IN THE AREA. CTLR SAID SOMETHING TO EFFECT OF 'FREQ CHANGE APPROVED, LEAVING CLASS D AIRSPACE.' LATER, I DROPPED PAX BACK OFF AT BAK. UPON DEP, I REALIZED CTLR SAID TO '...RPT LEAVING CLASS D AIRSPACE.' (I HAD NOT DONE THIS PREVIOUSLY.) I DON'T KNOW IF ANY OF THIS STUFF IS A BIG DEAL OR NOT, BUT SOME CTLRS MAY BE MORE SENSITIVE THAN OTHERS. OVERALL, I HAVE FOUND THEM TO BE EXTREMELY COURTEOUS AND PROFESSIONAL AND HELPFUL.
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.