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A cessna citation 5 flight crew forgets to set the altitude select which leads to the aircraft descending 300 ft below assigned altitude.
| Attributes | |
| ACN | 519740 |
| Time | |
| Date | 200107 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : pmd.vortac |
| State Reference | CA |
| Altitude | msl bound lower : 7700 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Citation V |
| Route In Use | arrival star : n/s |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 102 flight time total : 25663 flight time type : 2820 |
| ASRS Report | 519740 |
| Events | |
| Anomaly | non adherence : clearance |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was cleared to cross janny intersection at 8000 ft. Joshua approach reminded me about 8000 ft as the aircraft was down to 7700 ft. I immediately corrected back to 8000 ft. The aircraft was on autoplt. I had failed to reset the altitude select from 14000 ft to 8000 ft when cleared. My prior clearance, from ZLA, had been to cross 15 DME east of pmd at 14000 ft. When I was changed over to joshua approach, I was still east of the 15 DME. They gave me a new clearance to cross janny at 8000 ft. At that time I was trying to make visual contact with TCASII targets in my area and failed to set 8000 ft in the altitude select. I had delayed my descent until clear of the TCASII traffic, but was still concentrating on tracking and visually acquiring the targets when joshua approach reminded me of my altitude. This is a case of allowing a distraction to prevent me from completing all necessary tasks. Joshua approach was very busy and never called out any traffic to me.
Original NASA ASRS Text
Title: A CESSNA CITATION 5 FLT CREW FORGETS TO SET THE ALT SELECT WHICH LEADS TO THE ACFT DSNDING 300 FT BELOW ASSIGNED ALT.
Narrative: I WAS CLRED TO CROSS JANNY INTXN AT 8000 FT. JOSHUA APCH REMINDED ME ABOUT 8000 FT AS THE ACFT WAS DOWN TO 7700 FT. I IMMEDIATELY CORRECTED BACK TO 8000 FT. THE ACFT WAS ON AUTOPLT. I HAD FAILED TO RESET THE ALT SELECT FROM 14000 FT TO 8000 FT WHEN CLRED. MY PRIOR CLRNC, FROM ZLA, HAD BEEN TO CROSS 15 DME E OF PMD AT 14000 FT. WHEN I WAS CHANGED OVER TO JOSHUA APCH, I WAS STILL E OF THE 15 DME. THEY GAVE ME A NEW CLRNC TO CROSS JANNY AT 8000 FT. AT THAT TIME I WAS TRYING TO MAKE VISUAL CONTACT WITH TCASII TARGETS IN MY AREA AND FAILED TO SET 8000 FT IN THE ALT SELECT. I HAD DELAYED MY DSCNT UNTIL CLR OF THE TCASII TFC, BUT WAS STILL CONCENTRATING ON TRACKING AND VISUALLY ACQUIRING THE TARGETS WHEN JOSHUA APCH REMINDED ME OF MY ALT. THIS IS A CASE OF ALLOWING A DISTR TO PREVENT ME FROM COMPLETING ALL NECESSARY TASKS. JOSHUA APCH WAS VERY BUSY AND NEVER CALLED OUT ANY TFC TO ME.
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.