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Air carrier flight crew failed to meet a crossing restriction at boone intersection when they confused it with looth.
| Attributes | |
| ACN | 954814 |
| Time | |
| Date | 201106 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZAU.ARTCC |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance |
Narrative:
ATC cleared us to cross boone intersection at 11000 feet. Since the captain's FMS was deferred we were using the first officer's FMS and the ca was the pilot flying. The first officer set 11000 ft in the altitude preselector and then put 11000' in the FMS in what we thought was boone intersection. In reality the 11000' was set to looth intersection. I monitored the VNAV until it said 2000 ft/min to meet our crossing altitude and started my descent. About 7 miles from boone intersection I noticed that 2000 ft/min was not going to make the crossing restriction and descended at a rate of 4000 ft/min. This still wasn't enough and ATC asked us 1 mile prior to boone if we were going to make the crossing restriction and we said we were trying. We crossed boone at approximately 12500 feet and ATC center told us to contact ord approach. That was the end of that.
Original NASA ASRS Text
Title: Air carrier flight crew failed to meet a crossing restriction at BOONE intersection when they confused it with LOOTH.
Narrative: ATC cleared us to cross BOONE intersection at 11000 feet. Since the Captain's FMS was deferred we were using the F/O's FMS and the CA was the Pilot Flying. The F/O set 11000 ft in the altitude preselector and then put 11000' in the FMS in what we thought was BOONE intersection. In reality the 11000' was set to LOOTH intersection. I monitored the VNAV until it said 2000 ft/min to meet our crossing altitude and started my descent. About 7 miles from BOONE intersection I noticed that 2000 ft/min was not going to make the crossing restriction and descended at a rate of 4000 ft/min. This still wasn't enough and ATC asked us 1 mile prior to BOONE if we were going to make the crossing restriction and we said we were trying. We crossed BOONE at approximately 12500 feet and ATC center told us to contact ORD approach. That was the end of that.
Data retrieved from NASA's ASRS site as of April 2012 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.