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Air carrier medium large transport responding to descent clearance was challenged by approach controller and told the clearance was 'in error.'
| Attributes | |
| ACN | 103265 |
| Time | |
| Date | 198901 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : fll |
| State Reference | FL |
| Altitude | msl bound lower : 4000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 1260 |
| ASRS Report | 103265 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : cfi pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 228 flight time total : 12500 flight time type : 5600 |
| ASRS Report | 103371 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
At 6000' MSL on approach, cleared to cross holid at or above 3000' and execute ILS 9L. During descent approach control asked altitude. We reported passing 4400' MSL for 3000' MSL. Approach control requested an immediate level off at 4000' MSL. Descent clearance was in error. An approach to landing was continued. Perhaps improper clearance could have been discovered by closer attention to readback. Supplemental information from acn 103371: after leaving 6000' approach control questioned our altitude and said she did not clear us out of 6000'. We asked what she wanted us to do and, after a pause, she instructed us to maintain 4000'. There seemed to be a conflict with another aircraft, but I have no details on that.
Original NASA ASRS Text
Title: ACR MLG RESPONDING TO DESCENT CLRNC WAS CHALLENGED BY APCH CTLR AND TOLD THE CLRNC WAS 'IN ERROR.'
Narrative: AT 6000' MSL ON APCH, CLRED TO CROSS HOLID AT OR ABOVE 3000' AND EXECUTE ILS 9L. DURING DSCNT APCH CTL ASKED ALT. WE RPTED PASSING 4400' MSL FOR 3000' MSL. APCH CTL REQUESTED AN IMMEDIATE LEVEL OFF AT 4000' MSL. DSCNT CLRNC WAS IN ERROR. AN APCH TO LNDG WAS CONTINUED. PERHAPS IMPROPER CLRNC COULD HAVE BEEN DISCOVERED BY CLOSER ATTN TO READBACK. SUPPLEMENTAL INFO FROM ACN 103371: AFTER LEAVING 6000' APCH CTL QUESTIONED OUR ALT AND SAID SHE DID NOT CLR US OUT OF 6000'. WE ASKED WHAT SHE WANTED US TO DO AND, AFTER A PAUSE, SHE INSTRUCTED US TO MAINTAIN 4000'. THERE SEEMED TO BE A CONFLICT WITH ANOTHER ACFT, BUT I HAVE NO DETAILS ON THAT.
Data retrieved from NASA's ASRS site as of August 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.