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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Potential conflict less than standard separation - pilot encounters an updraft that brings his aircraft too close to another.
| Attributes | |
| ACN | 300480 |
| Time | |
| Date | 199503 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phx |
| State Reference | AZ |
| Altitude | msl bound lower : 3000 msl bound upper : 3200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phx tower : sfo |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 40 flight time total : 1900 flight time type : 350 |
| ASRS Report | 300480 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 2000 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was assigned 3000 ft, proceed northbound toward the airport and told that I had traffic at 12 O'clock 3500 ft sbound. The flight conditions were clear, but turbulent because of the winds and as I was crossing over a small mountain ridge south of the airport I hit an updraft that immediately caused me to gain 150-200 ft. I quickly descended and at the same moment saw my traffic cross above and in front of me. There was no near miss, but clearly involved a bad situation that I should have seen coming. With windy conditions and a mountain coming up, I should have predicted an updraft and slowed the aircraft and been ready. With the pilot and aircraft ready and prepared, we would not have climbed more than 50 ft.
Original NASA ASRS Text
Title: POTENTIAL CONFLICT LTSS - PLT ENCOUNTERS AN UPDRAFT THAT BRINGS HIS ACFT TOO CLOSE TO ANOTHER.
Narrative: I WAS ASSIGNED 3000 FT, PROCEED NBOUND TOWARD THE ARPT AND TOLD THAT I HAD TFC AT 12 O'CLOCK 3500 FT SBOUND. THE FLT CONDITIONS WERE CLR, BUT TURBULENT BECAUSE OF THE WINDS AND AS I WAS XING OVER A SMALL MOUNTAIN RIDGE S OF THE ARPT I HIT AN UPDRAFT THAT IMMEDIATELY CAUSED ME TO GAIN 150-200 FT. I QUICKLY DSNDED AND AT THE SAME MOMENT SAW MY TFC CROSS ABOVE AND IN FRONT OF ME. THERE WAS NO NEAR MISS, BUT CLRLY INVOLVED A BAD SIT THAT I SHOULD HAVE SEEN COMING. WITH WINDY CONDITIONS AND A MOUNTAIN COMING UP, I SHOULD HAVE PREDICTED AN UPDRAFT AND SLOWED THE ACFT AND BEEN READY. WITH THE PLT AND ACFT READY AND PREPARED, WE WOULD NOT HAVE CLBED MORE THAN 50 FT.
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.