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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Medium large transport aircraft on STAR with crossing restr was reclred direct to another fix. Next controller clearance reverted back to the original clearance, but flight crew had already set in the new fix on the FMC, so controller cleared them to a point close to the original crossing fix. Flight crew erroneously set in wrong altitude.
| Attributes | |
| ACN | 375574 |
| Time | |
| Date | 199707 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ztl |
| State Reference | GA |
| Altitude | msl bound lower : 11500 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : ztl |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 12000 flight time type : 4025 |
| ASRS Report | 375574 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 20000 flight time type : 10000 |
| ASRS Report | 375720 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance other anomaly other |
| 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 Inter Facility Coordination Failure |
Narrative:
On the sinca 3 arrival into atl we had programmed the FMC to cross canuk at 250 KTS and 12000 ft. We were subsequently cleared direct to husky intersection with no altitude or airspeed restr. The next controller told us to cross canuk at 250 KTS and 12000 ft. We told her we were direct to husky, so she then reclred us to cross 40 mi southeast of atl at 12000 ft and 250 KTS. We programmed the FMC to cross 11 mi southeast of husky (45 mi southeast of atl) at 250 KTS and 11000 ft. We set our MCP to 11000 ft. I believe we read back 11000 ft but I am not sure. The controller caught our descent through 12000 ft and we climbed immediately back to 12000 ft. End of event. I feel it was not necessary to amend the original sinca arrival in the first place (ATC communication gap between controllers). However, our inattn to the altitude was caused by: 1) failure to monitor the aircraft by focusing entirely on the FMC, 2) not doublechking the published arrival plate for continuity, and 3) automatic airplane complacency.
Original NASA ASRS Text
Title: MLG ACFT ON STAR WITH XING RESTR WAS RECLRED DIRECT TO ANOTHER FIX. NEXT CTLR CLRNC REVERTED BACK TO THE ORIGINAL CLRNC, BUT FLC HAD ALREADY SET IN THE NEW FIX ON THE FMC, SO CTLR CLRED THEM TO A POINT CLOSE TO THE ORIGINAL XING FIX. FLC ERRONEOUSLY SET IN WRONG ALT.
Narrative: ON THE SINCA 3 ARR INTO ATL WE HAD PROGRAMMED THE FMC TO CROSS CANUK AT 250 KTS AND 12000 FT. WE WERE SUBSEQUENTLY CLRED DIRECT TO HUSKY INTXN WITH NO ALT OR AIRSPD RESTR. THE NEXT CTLR TOLD US TO CROSS CANUK AT 250 KTS AND 12000 FT. WE TOLD HER WE WERE DIRECT TO HUSKY, SO SHE THEN RECLRED US TO CROSS 40 MI SE OF ATL AT 12000 FT AND 250 KTS. WE PROGRAMMED THE FMC TO CROSS 11 MI SE OF HUSKY (45 MI SE OF ATL) AT 250 KTS AND 11000 FT. WE SET OUR MCP TO 11000 FT. I BELIEVE WE READ BACK 11000 FT BUT I AM NOT SURE. THE CTLR CAUGHT OUR DSCNT THROUGH 12000 FT AND WE CLBED IMMEDIATELY BACK TO 12000 FT. END OF EVENT. I FEEL IT WAS NOT NECESSARY TO AMEND THE ORIGINAL SINCA ARR IN THE FIRST PLACE (ATC COM GAP BTWN CTLRS). HOWEVER, OUR INATTN TO THE ALT WAS CAUSED BY: 1) FAILURE TO MONITOR THE ACFT BY FOCUSING ENTIRELY ON THE FMC, 2) NOT DOUBLECHKING THE PUBLISHED ARR PLATE FOR CONTINUITY, AND 3) AUTOMATIC AIRPLANE COMPLACENCY.
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.