|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : zny.artcc|
|Altitude||msl bound lower : 16000|
msl bound upper : 18000
|Operator||general aviation : corporate|
|Make Model Name||Gulfstream IV|
|Flight Phase||climbout : intermediate altitude|
|Affiliation||company : corporate|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : flight engineer|
pilot : atp
|Experience||flight time last 90 days : 90|
flight time total : 5650
flight time type : 2300
|Anomaly||altitude deviation : excursion from assigned altitude|
non adherence : clearance
other anomaly other
|Resolutory Action||controller : separated traffic|
none taken : anomaly accepted
|Consequence||faa : reviewed incident with flight crew|
|Problem Areas||ATC Human Performance|
Flight Crew Human Performance
|Primary Problem||ATC Human Performance|
|Air Traffic Incident||Operational Error|
In the 12TH hour of a 13 1/2 hour duty day, at 16000 ft, controller cleared our aircraft to FL450. Out of FL180 he cleared us again to 17000 ft. We told him we were through FL180, but would descend back to 17000 ft. He inquired why we had left 16000 ft. We told him that he had already cleared us to FL450. He then cleared the intended aircraft to FL450. We were both tired but believe we were the aircraft that the controller originally cleared to FL450. Our flight plan was for FL390. It was filed by company as it was the second leg of an overseas flight. It was also for a wbound flight. Had we been more alert, we may have questioned the clearance. However, because of the extent of our duty we complied without question. We are both certain that our tail number was called for the clearance to climb.
Original NASA ASRS Text
Title: G-4 FLT CREW AND A CTR CTLR HAVE A DISAGREEMENT AS TO WHO A CLRNC WAS FOR.
Narrative: IN THE 12TH HR OF A 13 1/2 HR DUTY DAY, AT 16000 FT, CTLR CLRED OUR ACFT TO FL450. OUT OF FL180 HE CLRED US AGAIN TO 17000 FT. WE TOLD HIM WE WERE THROUGH FL180, BUT WOULD DSND BACK TO 17000 FT. HE INQUIRED WHY WE HAD LEFT 16000 FT. WE TOLD HIM THAT HE HAD ALREADY CLRED US TO FL450. HE THEN CLRED THE INTENDED ACFT TO FL450. WE WERE BOTH TIRED BUT BELIEVE WE WERE THE ACFT THAT THE CTLR ORIGINALLY CLRED TO FL450. OUR FLT PLAN WAS FOR FL390. IT WAS FILED BY COMPANY AS IT WAS THE SECOND LEG OF AN OVERSEAS FLT. IT WAS ALSO FOR A WBOUND FLT. HAD WE BEEN MORE ALERT, WE MAY HAVE QUESTIONED THE CLRNC. HOWEVER, BECAUSE OF THE EXTENT OF OUR DUTY WE COMPLIED WITHOUT QUESTION. WE ARE BOTH CERTAIN THAT OUR TAIL NUMBER WAS CALLED FOR THE CLRNC TO CLB.
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.