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Flight crew of light transport understood cleared for descent and full ILS approach. Controller had intended for the flight to maintain 12000' MSL.
| Attributes | |
| ACN | 168883 |
| Time | |
| Date | 199101 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dro |
| State Reference | NM |
| Altitude | msl bound lower : 11000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 115 flight time total : 1950 flight time type : 90 |
| ASRS Report | 168883 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4200 flight time type : 110 |
| ASRS Report | 168556 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While approaching the durango VOR we were asked if we would like an approach to get below a cloud deck that was over top and to the north of the field. We were cleared for the ILS and were told to proceed to hindy (14 DME) before initiating the procedure turn. After passing the VOR we intercepting the appropriate course to hindy and started a slow descent to the appropriate MDA for the procedure turn. Passing 11000' we were told by the controller to maintain 11000'. We cancelled IFR a short time later and continued a visibility approach to the field. There appeared to be a problem with the intent of the controller and the perception of us as the flight crew that we were cleared for the ILS approach. We interpreted it as clearance for the entire approach and responded that way. The controller apparently meant for us to maintain 12000'.
Original NASA ASRS Text
Title: FLT CREW OF LTT UNDERSTOOD CLEARED FOR DESCENT AND FULL ILS APCH. CTLR HAD INTENDED FOR THE FLT TO MAINTAIN 12000' MSL.
Narrative: WHILE APCHING THE DURANGO VOR WE WERE ASKED IF WE WOULD LIKE AN APCH TO GET BELOW A CLOUD DECK THAT WAS OVER TOP AND TO THE N OF THE FIELD. WE WERE CLRED FOR THE ILS AND WERE TOLD TO PROCEED TO HINDY (14 DME) BEFORE INITIATING THE PROC TURN. AFTER PASSING THE VOR WE INTERCEPTING THE APPROPRIATE COURSE TO HINDY AND STARTED A SLOW DSNT TO THE APPROPRIATE MDA FOR THE PROC TURN. PASSING 11000' WE WERE TOLD BY THE CTLR TO MAINTAIN 11000'. WE CANCELLED IFR A SHORT TIME LATER AND CONTINUED A VIS APCH TO THE FIELD. THERE APPEARED TO BE A PROB WITH THE INTENT OF THE CTLR AND THE PERCEPTION OF US AS THE FLT CREW THAT WE WERE CLRED FOR THE ILS APCH. WE INTERPRETED IT AS CLRNC FOR THE ENTIRE APCH AND RESPONDED THAT WAY. THE CTLR APPARENTLY MEANT FOR US TO MAINTAIN 12000'.
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.