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Beech jet 400 observed by ARTCC controller as 150 ft low after descent intermediate altitude leveloff.
| Attributes | |
| ACN | 500543 |
| Time | |
| Date | 200102 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ptk.airport |
| State Reference | MI |
| Altitude | msl bound lower : 12850 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Snow Turbulence |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 4000 flight time type : 780 |
| ASRS Report | 500543 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : cfi pilot : commercial pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 4500 flight time type : 450 |
| ASRS Report | 501010 |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : weather non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment other aircraft equipment : altimeter other controllera |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
ZOB called to confirm leveling 13000 ft. We replied 'yes, 13000 ft.' controller stated he had us a bit low. Autoplt was in 'smooth ride'/turbulence mode and went roughly 150 ft low due to turbulence and descent rate. Autoplt was disconnected and climb back to 13000 ft was initiated. Contributing factor may have been crossing a WX front.
Original NASA ASRS Text
Title: BEECH JET 400 OBSERVED BY ARTCC CTLR AS 150 FT LOW AFTER DSCNT INTERMEDIATE ALT LEVELOFF.
Narrative: ZOB CALLED TO CONFIRM LEVELING 13000 FT. WE REPLIED 'YES, 13000 FT.' CTLR STATED HE HAD US A BIT LOW. AUTOPLT WAS IN 'SMOOTH RIDE'/TURB MODE AND WENT ROUGHLY 150 FT LOW DUE TO TURB AND DSCNT RATE. AUTOPLT WAS DISCONNECTED AND CLB BACK TO 13000 FT WAS INITIATED. CONTRIBUTING FACTOR MAY HAVE BEEN XING A WX FRONT.
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.