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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Private pilot of a motorized glider inadvertently climbed through class D airspace causing an airborne conflict when he had to take evasive action to avoid a small jet. Even though he heard the tower call for his aircraft identify, he did not respond.
| Attributes | |
| ACN | 373220 |
| Time | |
| Date | 199707 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bjc airport : 48v |
| State Reference | CO |
| Altitude | msl bound lower : 7000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : bjc |
| Operator | general aviation : personal |
| Make Model Name | Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 20 flight time total : 900 flight time type : 200 |
| ASRS Report | 373220 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | other controllera other other : unspecified |
| Resolutory Action | flight crew : exited penetrated airspace flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 2000 vertical : 750 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Left tri-county 48V passing bjc to east at 7000 ft MSL. Climb limited by engine (85 hp). I believed I was at least 5 mi out. Radio on 118.6 jeffco tower frequency. Attempting to set up GPS for distance verification. Transponder on with altitude. Noticed jet approaching. I immediately veered to east. Almost immediately I heard jeffco tower inquire for aircraft identify. I did not know it was appropriate to contact tower if not outside of class D airspace (which I believed I was). Future procedure: GPS on to bjc. Contact tower before takeoff, or immediately following. Better identify boundary airways and keep landmarks. I go near bjc class D airspace often. I want them to know where I am.
Original NASA ASRS Text
Title: PVT PLT OF A MOTORIZED GLIDER INADVERTENTLY CLBED THROUGH CLASS D AIRSPACE CAUSING AN AIRBORNE CONFLICT WHEN HE HAD TO TAKE EVASIVE ACTION TO AVOID A SMALL JET. EVEN THOUGH HE HEARD THE TWR CALL FOR HIS ACFT IDENT, HE DID NOT RESPOND.
Narrative: LEFT TRI-COUNTY 48V PASSING BJC TO E AT 7000 FT MSL. CLB LIMITED BY ENG (85 HP). I BELIEVED I WAS AT LEAST 5 MI OUT. RADIO ON 118.6 JEFFCO TWR FREQ. ATTEMPTING TO SET UP GPS FOR DISTANCE VERIFICATION. XPONDER ON WITH ALT. NOTICED JET APCHING. I IMMEDIATELY VEERED TO E. ALMOST IMMEDIATELY I HEARD JEFFCO TWR INQUIRE FOR ACFT IDENT. I DID NOT KNOW IT WAS APPROPRIATE TO CONTACT TWR IF NOT OUTSIDE OF CLASS D AIRSPACE (WHICH I BELIEVED I WAS). FUTURE PROC: GPS ON TO BJC. CONTACT TWR BEFORE TKOF, OR IMMEDIATELY FOLLOWING. BETTER IDENT BOUNDARY AIRWAYS AND KEEP LANDMARKS. I GO NEAR BJC CLASS D AIRSPACE OFTEN. I WANT THEM TO KNOW WHERE I AM.
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.