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While descending for an approach at night with low level windshear and turbulence, PIC allowed the PF first officer to descend below assigned altitude.
| Attributes | |
| ACN | 460280 |
| Time | |
| Date | 200001 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : nyack |
| State Reference | NY |
| Altitude | msl bound lower : 3600 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 8000 flight time type : 1200 |
| ASRS Report | 460280 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Low level windshear, moderate turbulence. Low time first officer flying from right seat, 5000 ft descending to 4000 ft. My attention was diverted to a radio call to change frequency and go direct to sax VOR. First officer failed to level at 4000 ft. I took control at 3600 ft and leveled at 4000 ft, autoplt was not on. I should not have allowed low time pilot to fly in these WX conditions.
Original NASA ASRS Text
Title: WHILE DSNDING FOR AN APCH AT NIGHT WITH LOW LEVEL WINDSHEAR AND TURB, PIC ALLOWED THE PF FO TO DSND BELOW ASSIGNED ALT.
Narrative: LOW LEVEL WINDSHEAR, MODERATE TURB. LOW TIME FO FLYING FROM R SEAT, 5000 FT DSNDING TO 4000 FT. MY ATTN WAS DIVERTED TO A RADIO CALL TO CHANGE FREQ AND GO DIRECT TO SAX VOR. FO FAILED TO LEVEL AT 4000 FT. I TOOK CTL AT 3600 FT AND LEVELED AT 4000 FT, AUTOPLT WAS NOT ON. I SHOULD NOT HAVE ALLOWED LOW TIME PLT TO FLY IN THESE WX CONDITIONS.
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.