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An enstrom 280FX helicopter descends 300 ft below the assigned altitude on a GPS approach training flight 10 NM southwest of ugn, il.
| Attributes | |
| ACN | 448860 |
| Time | |
| Date | 199909 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ugn.airport |
| State Reference | IL |
| Altitude | msl bound lower : 2200 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | general aviation : instructional |
| Make Model Name | Enstrom Helicopter 280 Shark |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor |
| Qualification | pilot : cfi pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 55 flight time total : 1050 flight time type : 28 |
| ASRS Report | 448860 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Qualification | pilot : private |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : published procedure other anomaly other |
| 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:
I was on an instrument training flight with a student. We were on the outbound portion of the hold for course reversal (GPS 05-ugn) and the student had not put the waypoint on hold. After the GPS sequenced inbound, I was assisting the student in again selecting the IAF and when I scanned we were at 2200 ft. Our assigned altitude was 2500 ft, however, we were cleared for the approach and could descend to 2400 ft. I must not get fixated in the cockpit and continually monitor what the student is doing. This was also a good lesson for the student who did not react to the altitude incursion. He was informed of the importance of reacting immediately.
Original NASA ASRS Text
Title: AN ENSTROM 280FX HELI DSNDS 300 FT BELOW THE ASSIGNED ALT ON A GPS APCH TRAINING FLT 10 NM SW OF UGN, IL.
Narrative: I WAS ON AN INST TRAINING FLT WITH A STUDENT. WE WERE ON THE OUTBOUND PORTION OF THE HOLD FOR COURSE REVERSAL (GPS 05-UGN) AND THE STUDENT HAD NOT PUT THE WAYPOINT ON HOLD. AFTER THE GPS SEQUENCED INBOUND, I WAS ASSISTING THE STUDENT IN AGAIN SELECTING THE IAF AND WHEN I SCANNED WE WERE AT 2200 FT. OUR ASSIGNED ALT WAS 2500 FT, HOWEVER, WE WERE CLRED FOR THE APCH AND COULD DSND TO 2400 FT. I MUST NOT GET FIXATED IN THE COCKPIT AND CONTINUALLY MONITOR WHAT THE STUDENT IS DOING. THIS WAS ALSO A GOOD LESSON FOR THE STUDENT WHO DID NOT REACT TO THE ALT INCURSION. HE WAS INFORMED OF THE IMPORTANCE OF REACTING IMMEDIATELY.
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.