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Late altitude change clearance requires air carrier to stop descent and climb back to the new altitude assigned. Traffic conflict.
| Attributes | |
| ACN | 491758 |
| Time | |
| Date | 200011 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : orl.vortac |
| State Reference | FL |
| Altitude | msl single value : 8600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mco.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : leese.9 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : mco.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 9000 flight time type : 80 |
| ASRS Report | 491758 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Miss Distance | horizontal : 18000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
On leese 9 arrival, we were cleared to descend to 5000 ft. Passing 8600 ft controller advised us to level at 9000 ft. We climbed back to 9000 ft and overheard controller vectoring another air carrier on climb out to 8000 ft, I believe. I do not believe there was any collision hazard, (we would have seen and avoided the other aircraft) but there was a controller mistake.
Original NASA ASRS Text
Title: LATE ALT CHANGE CLRNC REQUIRES ACR TO STOP DSCNT AND CLB BACK TO THE NEW ALT ASSIGNED. TFC CONFLICT.
Narrative: ON LEESE 9 ARR, WE WERE CLRED TO DSND TO 5000 FT. PASSING 8600 FT CTLR ADVISED US TO LEVEL AT 9000 FT. WE CLBED BACK TO 9000 FT AND OVERHEARD CTLR VECTORING ANOTHER ACR ON CLBOUT TO 8000 FT, I BELIEVE. I DO NOT BELIEVE THERE WAS ANY COLLISION HAZARD, (WE WOULD HAVE SEEN AND AVOIDED THE OTHER ACFT) BUT THERE WAS A CTLR MISTAKE.
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.