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CFIT when a BE35 private pilot descends prematurely while making a GPS approach to runway 4 in marginal WX southwest of gvl, GA.
| Attributes | |
| ACN | 576609 |
| Time | |
| Date | 200303 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : gvl.airport |
| State Reference | GA |
| Altitude | msl bound lower : 2800 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 35 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | ils localizer only : 4 other |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 35 flight time total : 900 flight time type : 700 |
| ASRS Report | 576609 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | inflight encounter : weather non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | atc equipment : msaw atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued alert flight crew : exited adverse environment flight crew : became reoriented |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On a localizer runway 4 approach to gvl, I mistook the distance on the GPS to be the mileage to the airport instead of the FAF. I began to descend when the mileage was less than the published 5. Zero NM from the FAF to the map. Fortunately, the ceiling was high enough to allow transition to visual at a safe altitude. Center issued a 'terrain alert' after I was in VMC. Although I will certainly never do this again, more training and study is needed on GPS operations.
Original NASA ASRS Text
Title: CFIT WHEN A BE35 PVT PLT DSNDS PREMATURELY WHILE MAKING A GPS APCH TO RWY 4 IN MARGINAL WX SW OF GVL, GA.
Narrative: ON A LOC RWY 4 APCH TO GVL, I MISTOOK THE DISTANCE ON THE GPS TO BE THE MILEAGE TO THE ARPT INSTEAD OF THE FAF. I BEGAN TO DSND WHEN THE MILEAGE WAS LESS THAN THE PUBLISHED 5. ZERO NM FROM THE FAF TO THE MAP. FORTUNATELY, THE CEILING WAS HIGH ENOUGH TO ALLOW TRANSITION TO VISUAL AT A SAFE ALT. CTR ISSUED A 'TERRAIN ALERT' AFTER I WAS IN VMC. ALTHOUGH I WILL CERTAINLY NEVER DO THIS AGAIN, MORE TRAINING AND STUDY IS NEEDED ON GPS OPS.
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.