37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 176141 |
Time | |
Date | 199104 |
Day | Thu |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | atc facility : cle |
State Reference | OH |
Altitude | msl bound lower : 33000 msl bound upper : 33000 |
Environment | |
Flight Conditions | VMC |
Light | Dawn |
Aircraft 1 | |
Controlling Facilities | artcc : zob |
Operator | general aviation : corporate |
Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
Flight Phase | climbout : intermediate altitude |
Route In Use | enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : radar |
Qualification | controller : radar |
Experience | controller non radar : 2 controller radar : 6 |
ASRS Report | 176141 |
Person 2 | |
Affiliation | Other |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Events | |
Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : clearance non adherence : required legal separation |
Independent Detector | other controllera |
Resolutory Action | controller : issued new clearance other |
Consequence | faa : investigated |
Miss Distance | horizontal : 26400 vertical : 100 |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Operational Error |
Narrative:
Air carrier Y was at FL330. Cpr X was climbing to FL410. Sep lost 4.4 mi latitude at FL330. Both aircraft asked if the turns issued for traffic were for them. Turn clearance issued twice to the climbing cpr X, and 3 times for air carrier Y before aircraft began their turns. Basic reason sep was lost was due to error in judgement that aircraft would be latitude separated when climb was issued to cpr Y. Radar vectors were not responded in a timely fashion.
Original NASA ASRS Text
Title: CPR X HAD LESS THAN STANDARD SEPARATION FROM ACY Y. SYSTEM ERROR.
Narrative: ACR Y WAS AT FL330. CPR X WAS CLBING TO FL410. SEP LOST 4.4 MI LAT AT FL330. BOTH ACFT ASKED IF THE TURNS ISSUED FOR TFC WERE FOR THEM. TURN CLRNC ISSUED TWICE TO THE CLBING CPR X, AND 3 TIMES FOR ACR Y BEFORE ACFT BEGAN THEIR TURNS. BASIC REASON SEP WAS LOST WAS DUE TO ERROR IN JUDGEMENT THAT ACFT WOULD BE LAT SEPARATED WHEN CLB WAS ISSUED TO CPR Y. RADAR VECTORS WERE NOT RESPONDED IN A TIMELY FASHION.
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.