Narrative:

New first officer on aircraft, no previous turbojet experience (as PIC or sic), new to automation, FMC, etc. Fatigue a factor, duty day started 7 hours prior (AB00). Backside of clock flying, inadequate rest due to body being on day cycle past 3 days and little sleep before starting trip (around 2 hours). WX was IMC, but were in VMC conditions at time. ATC keeps aircraft high coming over mountains, then gives rapid descent clearance to vector altitude (9000 ft MSL to 4200 ft MSL). Was on vectors for localizer, speed 250 KIAS. ATC gave approach clearance, said to slow to final approach speed. Dialed in slower speed to start configuring (200 KTS) and extended gear. Made mistake of arming approach mode while GS was erratic and we were above it. Should have just armed localizer until slowed and went below GS for better capture. Autoplt then captured GS from above and started increasing descent rate rapidly. Disconnected autoplt. For some reason airspeed command bug window opened and autothrottles advanced, increasing airspeed further. Airspeed increased to 280-290 KIAS, ATC broke us off approach and gave us a 360 degree turn. Tried disengaging approach mode 2 times before successful. Finally got aircraft stabilized and slowed properly for approach, used automation again and all went well. A major factor was inexperience in type and complexity of automation. Could have started slowing down earlier to give myself more time to react. The automation can be confusing when things start unraveling. Still important to be able to turn it off and revert to the basics if necessary.

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Original NASA ASRS Text

Title: A FO, NEW TO THE B757, MANAGES TO CREATE AN EXCITING EVENT WHILE ARMING HIS AUTOPLT TO CAPTURE A GS FROM ABOVE DURING AN ILS APCH TO ONT, CA.

Narrative: NEW FO ON ACFT, NO PREVIOUS TURBOJET EXPERIENCE (AS PIC OR SIC), NEW TO AUTOMATION, FMC, ETC. FATIGUE A FACTOR, DUTY DAY STARTED 7 HRS PRIOR (AB00). BACKSIDE OF CLOCK FLYING, INADEQUATE REST DUE TO BODY BEING ON DAY CYCLE PAST 3 DAYS AND LITTLE SLEEP BEFORE STARTING TRIP (AROUND 2 HRS). WX WAS IMC, BUT WERE IN VMC CONDITIONS AT TIME. ATC KEEPS ACFT HIGH COMING OVER MOUNTAINS, THEN GIVES RAPID DSCNT CLRNC TO VECTOR ALT (9000 FT MSL TO 4200 FT MSL). WAS ON VECTORS FOR LOC, SPD 250 KIAS. ATC GAVE APCH CLRNC, SAID TO SLOW TO FINAL APCH SPD. DIALED IN SLOWER SPD TO START CONFIGURING (200 KTS) AND EXTENDED GEAR. MADE MISTAKE OF ARMING APCH MODE WHILE GS WAS ERRATIC AND WE WERE ABOVE IT. SHOULD HAVE JUST ARMED LOC UNTIL SLOWED AND WENT BELOW GS FOR BETTER CAPTURE. AUTOPLT THEN CAPTURED GS FROM ABOVE AND STARTED INCREASING DSCNT RATE RAPIDLY. DISCONNECTED AUTOPLT. FOR SOME REASON AIRSPD COMMAND BUG WINDOW OPENED AND AUTOTHROTTLES ADVANCED, INCREASING AIRSPD FURTHER. AIRSPD INCREASED TO 280-290 KIAS, ATC BROKE US OFF APCH AND GAVE US A 360 DEG TURN. TRIED DISENGAGING APCH MODE 2 TIMES BEFORE SUCCESSFUL. FINALLY GOT ACFT STABILIZED AND SLOWED PROPERLY FOR APCH, USED AUTOMATION AGAIN AND ALL WENT WELL. A MAJOR FACTOR WAS INEXPERIENCE IN TYPE AND COMPLEXITY OF AUTOMATION. COULD HAVE STARTED SLOWING DOWN EARLIER TO GIVE MYSELF MORE TIME TO REACT. THE AUTOMATION CAN BE CONFUSING WHEN THINGS START UNRAVELING. STILL IMPORTANT TO BE ABLE TO TURN IT OFF AND REVERT TO THE BASICS IF NECESSARY.

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.