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Air carrier Y TCASII climb from assigned altitude. Evasive action taken from air carrier X. Standard vertical separation applied.
| Attributes | |
| ACN | 245742 |
| Time | |
| Date | 199307 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : odi |
| State Reference | MN |
| Altitude | msl bound lower : 25000 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 245742 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 30000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X departed msp climbing over odi to atl. He leveled off at FL250. He was issued traffic at 12-1 O'clock, 5 mi. Air carrier Y level FL260, advised he was beginning climb for TCASII right after traffic was issued to both. On radar, air carrier X showed level FL250. The aircraft stated he was level. Other traffic at FL280 became a concern as well as increased traffic load on controller. No one was upset and all concerned handled situation well.
Original NASA ASRS Text
Title: ACR Y TCASII CLB FROM ASSIGNED ALT. EVASIVE ACTION TAKEN FROM ACR X. STANDARD VERT SEPARATION APPLIED.
Narrative: ACR X DEPARTED MSP CLBING OVER ODI TO ATL. HE LEVELED OFF AT FL250. HE WAS ISSUED TFC AT 12-1 O'CLOCK, 5 MI. ACR Y LEVEL FL260, ADVISED HE WAS BEGINNING CLB FOR TCASII RIGHT AFTER TFC WAS ISSUED TO BOTH. ON RADAR, ACR X SHOWED LEVEL FL250. THE ACFT STATED HE WAS LEVEL. OTHER TFC AT FL280 BECAME A CONCERN AS WELL AS INCREASED TFC LOAD ON CTLR. NO ONE WAS UPSET AND ALL CONCERNED HANDLED SIT WELL.
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.