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Pilot of a C182 overshot descent altitude due to flying tasks disruption resulting in a 300 ft error which was called to his attention as he was correcting back to assigned altitude.
| Attributes | |
| ACN | 359990 |
| Time | |
| Date | 199702 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ral |
| State Reference | CA |
| Altitude | msl bound lower : 2700 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont tower : mwa |
| Operator | general aviation : personal |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 10 flight time total : 3000 flight time type : 1000 |
| ASRS Report | 359990 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While being vectored for an ILS approach to ral, the controller cleared me for a descent from 5000 ft down to 3000 ft. During the descent I prepared the radios for the approach, configured the aircraft and reviewed the approach plate. Near the bottom of the descent the controller gave me a 160 degree turn to the right. After completing the turn and my review of the approach plate, I discovered I was 300 ft below my assigned altitude. I began an immediate climb back to 3000 ft. During the climb, the controller reminded me that my assigned altitude was 3000 ft. The remainder of the approach was completed without incidence. The main factor affecting the quality of the human performance was trying to do too many things at once, and a decrease in scan performance due to fewer hours flown than normal during the last 90 days.
Original NASA ASRS Text
Title: PLT OF A C182 OVERSHOT DSCNT ALT DUE TO FLYING TASKS DISRUPTION RESULTING IN A 300 FT ERROR WHICH WAS CALLED TO HIS ATTN AS HE WAS CORRECTING BACK TO ASSIGNED ALT.
Narrative: WHILE BEING VECTORED FOR AN ILS APCH TO RAL, THE CTLR CLRED ME FOR A DSCNT FROM 5000 FT DOWN TO 3000 FT. DURING THE DSCNT I PREPARED THE RADIOS FOR THE APCH, CONFIGURED THE ACFT AND REVIEWED THE APCH PLATE. NEAR THE BOTTOM OF THE DSCNT THE CTLR GAVE ME A 160 DEG TURN TO THE R. AFTER COMPLETING THE TURN AND MY REVIEW OF THE APCH PLATE, I DISCOVERED I WAS 300 FT BELOW MY ASSIGNED ALT. I BEGAN AN IMMEDIATE CLB BACK TO 3000 FT. DURING THE CLB, THE CTLR REMINDED ME THAT MY ASSIGNED ALT WAS 3000 FT. THE REMAINDER OF THE APCH WAS COMPLETED WITHOUT INCIDENCE. THE MAIN FACTOR AFFECTING THE QUALITY OF THE HUMAN PERFORMANCE WAS TRYING TO DO TOO MANY THINGS AT ONCE, AND A DECREASE IN SCAN PERFORMANCE DUE TO FEWER HRS FLOWN THAN NORMAL DURING THE LAST 90 DAYS.
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.