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Cpr Y climb through occupied altitude had less than standard separation from military X. System error.
| Attributes | |
| ACN | 286945 |
| Time | |
| Date | 199410 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : eri |
| State Reference | PA |
| Altitude | msl bound lower : 24000 msl bound upper : 24700 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob tower : pit |
| Operator | other |
| Make Model Name | Buckeye T-20 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 31 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 3 |
| ASRS Report | 286945 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : single pilot |
| Qualification | pilot : military |
| Experience | controller radar : 3 |
| ASRS Report | 286945 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 13500 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Military X was on frequency swbound level at 220. Controller a cleared X to FL230. X acknowledged. Employee a cleared X to FL240. Acknowledged. Employee a switched X to 119.72 or 389.7. X acknowledged. Jhw-right called employee a and requested that air carrier be stopped at FL270 for MTR who was traffic. Controller a stopped air carrier at FL270. Employee a inadvertently dropped the full data block on X controller a accepted handoff on cpr Y out of FL220 for FL230 eastbound. Employee a cleared Y to an altitude that was blocked on the frequency by an ELT. Y acknowledged the clearance and asked about the noise. Controller a reclred Y and conflict alert activated, and separation was lost. Closest proximity was 2.25 mi and 700 ft.
Original NASA ASRS Text
Title: CPR Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM MIL X. SYS ERROR.
Narrative: MIL X WAS ON FREQ SWBOUND LEVEL AT 220. CTLR A CLRED X TO FL230. X ACKNOWLEDGED. EMPLOYEE A CLRED X TO FL240. ACKNOWLEDGED. EMPLOYEE A SWITCHED X TO 119.72 OR 389.7. X ACKNOWLEDGED. JHW-R CALLED EMPLOYEE A AND REQUESTED THAT ACR BE STOPPED AT FL270 FOR MTR WHO WAS TFC. CTLR A STOPPED ACR AT FL270. EMPLOYEE A INADVERTENTLY DROPPED THE FULL DATA BLOCK ON X CTLR A ACCEPTED HDOF ON CPR Y OUT OF FL220 FOR FL230 EBOUND. EMPLOYEE A CLRED Y TO AN ALT THAT WAS BLOCKED ON THE FREQ BY AN ELT. Y ACKNOWLEDGED THE CLRNC AND ASKED ABOUT THE NOISE. CTLR A RECLRED Y AND CONFLICT ALERT ACTIVATED, AND SEPARATION WAS LOST. CLOSEST PROX WAS 2.25 MI AND 700 FT.
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.