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A B757 flight crew fail to notice that the automation didn't start a descent resulting in a crossing restr not being met in ZAU airspace.
| Attributes | |
| ACN | 601098 |
| Time | |
| Date | 200311 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : jvl.ndb |
| State Reference | WI |
| Altitude | msl bound lower : 29000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 601098 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : far non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overrode automation |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Approximately 145 mi west of jvl, ATC gave crossing instructions. Crossing was 120 mi west of jvl at FL290. The crossing was programmed into the FMC, and the altitude set into the MCP. The FMC did not initiate a descent. A min or 2 later, I noticed that the crossing point was less than 20 mi away. The MCP was in altitude hold. It must have changed to altitude hold before the captain got the altitude changed. We did not notice this. I initiated a descent with full speed brakes and a MCP speed of .830 mach. We crossed the 120 mi fix approximately 6000 ft high.
Original NASA ASRS Text
Title: A B757 FLT CREW FAIL TO NOTICE THAT THE AUTOMATION DIDN'T START A DSCNT RESULTING IN A XING RESTR NOT BEING MET IN ZAU AIRSPACE.
Narrative: APPROX 145 MI W OF JVL, ATC GAVE XING INSTRUCTIONS. XING WAS 120 MI W OF JVL AT FL290. THE XING WAS PROGRAMMED INTO THE FMC, AND THE ALT SET INTO THE MCP. THE FMC DID NOT INITIATE A DSCNT. A MIN OR 2 LATER, I NOTICED THAT THE XING POINT WAS LESS THAN 20 MI AWAY. THE MCP WAS IN ALT HOLD. IT MUST HAVE CHANGED TO ALT HOLD BEFORE THE CAPT GOT THE ALT CHANGED. WE DID NOT NOTICE THIS. I INITIATED A DSCNT WITH FULL SPD BRAKES AND A MCP SPD OF .830 MACH. WE CROSSED THE 120 MI FIX APPROX 6000 FT HIGH.
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.