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Flight crew of an medium large transport were cleared to descend and then advised to return to previous altitude by another ATC facility controller indicating an intercoord problem.
| Attributes | |
| ACN | 313190 |
| Time | |
| Date | 199508 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lgc airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 11700 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl tower : rno |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 170 flight time total : 12000 flight time type : 1500 |
| ASRS Report | 313190 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Shortly after leaving holding at lgc, we were inbound to atl on the lgc 6 arrival. ZTL cleared us to 11000 ft and the copilot acknowledged the clearance. ATC also switched us to a new center frequency. We checked in on the new frequency as we descended out of 12000 ft. The new controller told us to return to 12000 ft as there was traffic at 11000 ft. We complied, never having descended lower than 11700 ft. Although we had no conflict with the other aircraft, we probably would have if we had descended to 11000 ft. The cause of the problem would have been the first controller giving us 11000 ft when he already had traffic there. There was absolutely no question that the first controller assigned us 11000 ft. Both captain and first officer heard the altitude assignment and we acknowledged it.
Original NASA ASRS Text
Title: FLC OF AN MLG WERE CLRED TO DSND AND THEN ADVISED TO RETURN TO PREVIOUS ALT BY ANOTHER ATC FACILITY CTLR INDICATING AN INTERCOORD PROB.
Narrative: SHORTLY AFTER LEAVING HOLDING AT LGC, WE WERE INBOUND TO ATL ON THE LGC 6 ARR. ZTL CLRED US TO 11000 FT AND THE COPLT ACKNOWLEDGED THE CLRNC. ATC ALSO SWITCHED US TO A NEW CTR FREQ. WE CHKED IN ON THE NEW FREQ AS WE DSNDED OUT OF 12000 FT. THE NEW CTLR TOLD US TO RETURN TO 12000 FT AS THERE WAS TFC AT 11000 FT. WE COMPLIED, NEVER HAVING DSNDED LOWER THAN 11700 FT. ALTHOUGH WE HAD NO CONFLICT WITH THE OTHER ACFT, WE PROBABLY WOULD HAVE IF WE HAD DSNDED TO 11000 FT. THE CAUSE OF THE PROB WOULD HAVE BEEN THE FIRST CTLR GIVING US 11000 FT WHEN HE ALREADY HAD TFC THERE. THERE WAS ABSOLUTELY NO QUESTION THAT THE FIRST CTLR ASSIGNED US 11000 FT. BOTH CAPT AND FO HEARD THE ALT ASSIGNMENT AND WE ACKNOWLEDGED IT.
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.