|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : aml|
|Altitude||msl bound lower : 11000|
msl bound upper : 12000
|Controlling Facilities||tracon : iad|
|Operator||common carrier : air carrier|
|Make Model Name||Medium Large Transport, Low Wing, 2 Turbojet Eng|
|Navigation In Use||Other|
|Flight Phase||cruise other|
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : atp|
pilot : cfi
pilot : flight engineer
|Experience||flight time last 90 days : 200|
flight time total : 7000
|Anomaly||altitude deviation : crossing restriction not met|
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : insufficient time|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
I have found on a fairly regular basis that the latest technology equipment ie FMC/CDU/ACARS is causing a great deal of time being spent--eyes and ears in the cockpit regardless of WX. This personal reference is to the fact that during descent 20 west of armel VOR we were 1000' high on initial restriction to be at 11000' 20 west aml, we were at 120 degrees 20 west aml. Due to slow spool up time of the computer to calculate our necessary descent time and rate. At this point another restriction was given 5 DME west of aml at 8000', which we were able to comply with. The point being, a lack of practical experience utilizing this equipment in cockpit causes these deviations and the time delay in computer spool up to divulge the information is also critical.
Original NASA ASRS Text
Title: ACR MLG ALT DEVIATION CROSSING RESTRICTION NOT MET.
Narrative: I HAVE FOUND ON A FAIRLY REGULAR BASIS THAT THE LATEST TECHNOLOGY EQUIPMENT IE FMC/CDU/ACARS IS CAUSING A GREAT DEAL OF TIME BEING SPENT--EYES AND EARS IN THE COCKPIT REGARDLESS OF WX. THIS PERSONAL REF IS TO THE FACT THAT DURING DSCNT 20 W OF ARMEL VOR WE WERE 1000' HIGH ON INITIAL RESTRICTION TO BE AT 11000' 20 W AML, WE WERE AT 120 DEGS 20 W AML. DUE TO SLOW SPOOL UP TIME OF THE COMPUTER TO CALCULATE OUR NECESSARY DSCNT TIME AND RATE. AT THIS POINT ANOTHER RESTRICTION WAS GIVEN 5 DME W OF AML AT 8000', WHICH WE WERE ABLE TO COMPLY WITH. THE POINT BEING, A LACK OF PRACTICAL EXPERIENCE UTILIZING THIS EQUIP IN COCKPIT CAUSES THESE DEVIATIONS AND THE TIME DELAY IN COMPUTER SPOOL UP TO DIVULGE THE INFO IS ALSO CRITICAL.
Data retrieved from NASA's ASRS site as of August 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.