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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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PA23 pilot loses control for a moment during an updraft encounter and turbulence. Aircraft goes above assigned altitude before controller calls. Reporter regains control of aircraft and gets a new altitude assignment. Reporter briefly refers to his not getting a clearance void time as being contributory to event.
| Attributes | |
| ACN | 367060 |
| Time | |
| Date | 199704 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzv |
| State Reference | OH |
| Altitude | msl bound lower : 4000 msl bound upper : 4600 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu |
| Operator | general aviation : personal |
| Make Model Name | PA-23-250 Aztec |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute airway : zid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 30 flight time total : 3000 flight time type : 800 |
| ASRS Report | 367060 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : weather inflight encounter other non adherence : clearance other anomaly other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : regained aircraft control other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Busted altitude. I was told to climb to 4000 ft. I was trying to trim plane and level plane at 4000 ft. Lost my scan. Turbulence and windshear caused plane to rise suddenly as I was leveling nose. ATC asked what altitude I was at. I told him 4600 ft. He said I was to be at 4000 ft and I'm now in radar contact, climb to 8000 ft. I could have avoided this if I had not lost my concentration on my scan. This was my first altitude bust in 15 yrs. With further thinking, I could have avoided all this if I had gotten a clearance void time.
Original NASA ASRS Text
Title: PA23 PLT LOSES CTL FOR A MOMENT DURING AN UPDRAFT ENCOUNTER AND TURB. ACFT GOES ABOVE ASSIGNED ALT BEFORE CTLR CALLS. RPTR REGAINS CTL OF ACFT AND GETS A NEW ALT ASSIGNMENT. RPTR BRIEFLY REFERS TO HIS NOT GETTING A CLRNC VOID TIME AS BEING CONTRIBUTORY TO EVENT.
Narrative: BUSTED ALT. I WAS TOLD TO CLB TO 4000 FT. I WAS TRYING TO TRIM PLANE AND LEVEL PLANE AT 4000 FT. LOST MY SCAN. TURB AND WINDSHEAR CAUSED PLANE TO RISE SUDDENLY AS I WAS LEVELING NOSE. ATC ASKED WHAT ALT I WAS AT. I TOLD HIM 4600 FT. HE SAID I WAS TO BE AT 4000 FT AND I'M NOW IN RADAR CONTACT, CLB TO 8000 FT. I COULD HAVE AVOIDED THIS IF I HAD NOT LOST MY CONCENTRATION ON MY SCAN. THIS WAS MY FIRST ALT BUST IN 15 YRS. WITH FURTHER THINKING, I COULD HAVE AVOIDED ALL THIS IF I HAD GOTTEN A CLRNC VOID TIME.
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.