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Private pilot of small transport aircraft descended below the VASI lighting GS during a VOR instrument approach.
| Attributes | |
| ACN | 218250 |
| Time | |
| Date | 199208 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : baf |
| State Reference | MA |
| Altitude | msl bound lower : 780 msl bound upper : 1500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bdl tower : baf |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | descent : approach |
| Route In Use | approach : contact approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 42 flight time total : 690 flight time type : 165 |
| ASRS Report | 218250 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : ground less severe non adherence : published procedure non adherence : far other spatial deviation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On VOR 02 approach to westfield/barnes airport, I broke out of the clouds at 1500 ft and continued descending to the airport when it was fully insight. I descended below the MDA (780 ft) because I did not use the VASI as my primary source of descent information. Bradley approach advised westfield tower of a low altitude alert when I descended below MDA.
Original NASA ASRS Text
Title: PRIVATE PLT OF SMT ACFT DSNDED BELOW THE VASI LIGHTING GS DURING A VOR INST APCH.
Narrative: ON VOR 02 APCH TO WESTFIELD/BARNES ARPT, I BROKE OUT OF THE CLOUDS AT 1500 FT AND CONTINUED DSNDING TO THE ARPT WHEN IT WAS FULLY INSIGHT. I DSNDED BELOW THE MDA (780 FT) BECAUSE I DID NOT USE THE VASI AS MY PRIMARY SOURCE OF DSCNT INFO. BRADLEY APCH ADVISED WESTFIELD TWR OF A LOW ALT ALERT WHEN I DSNDED BELOW MDA.
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.