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Pilot of small aircraft directed to resume own navigation. Started descent for approach. Controller intervened advising he had not cleared the flight below 4000'.
| Attributes | |
| ACN | 159262 |
| Time | |
| Date | 199010 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : f54 |
| State Reference | TX |
| Altitude | msl bound lower : 3500 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw tower : tpa |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 25 flight time total : 560 flight time type : 260 |
| ASRS Report | 159262 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on an IFR flight plan I flew below my assigned altitude. Approach said, 'descend to 4000 and resume own navigation.' the controller was very busy and I assumed he wanted me to continue approach since I was in VFR and had the airport in sight. He stopped me at 3500' and said I was not cleared below 4000'. I told him he had told me to resume my own navigation. He said yes, but I was not cleared below 4000'. I said I was sorry and went back to 4000'. No further problems. My fault as I did not fully understand the term 'resume own navigation.' by the way, there is not much information in the far concerning the term 'resume own navigation.'
Original NASA ASRS Text
Title: PLT OF SMA DIRECTED TO RESUME OWN NAVIGATION. STARTED DESCENT FOR APCH. CTLR INTERVENED ADVISING HE HAD NOT CLEARED THE FLT BELOW 4000'.
Narrative: WHILE ON AN IFR FLT PLAN I FLEW BELOW MY ASSIGNED ALT. APCH SAID, 'DSND TO 4000 AND RESUME OWN NAV.' THE CTLR WAS VERY BUSY AND I ASSUMED HE WANTED ME TO CONTINUE APCH SINCE I WAS IN VFR AND HAD THE ARPT IN SIGHT. HE STOPPED ME AT 3500' AND SAID I WAS NOT CLRED BELOW 4000'. I TOLD HIM HE HAD TOLD ME TO RESUME MY OWN NAV. HE SAID YES, BUT I WAS NOT CLRED BELOW 4000'. I SAID I WAS SORRY AND WENT BACK TO 4000'. NO FURTHER PROBS. MY FAULT AS I DID NOT FULLY UNDERSTAND THE TERM 'RESUME OWN NAV.' BY THE WAY, THERE IS NOT MUCH INFO IN THE FAR CONCERNING THE TERM 'RESUME OWN NAV.'
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.