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Flight crew of large transport had change of altitude assignment of FL180 as they climbed through FL182 to avoid traffic conflict.
| Attributes | |
| ACN | 135731 |
| Time | |
| Date | 199001 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 18000 msl bound upper : 18300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : dfw tower : sdf |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 12800 flight time type : 2500 |
| ASRS Report | 135731 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
On climb out from dfw, clearance to FL230, assigned heading 270 degrees to intercept dfw departure. As turn was commenced to intercept 262 degree right dfw, a south wind was noted and slight overshoot occurred (265 degree right). ZFW assigned FL180 as aircraft passed FL182. Altitude checked at FL183 and aircraft returned to FL180. We queried center about reason for altitude assignment. Center replied traffic inbound. Flight proceeded normally to destination. Perhaps inbound and outbnd corridors are too close.
Original NASA ASRS Text
Title: FLT CREW OF LGT HAD CHANGE OF ALT ASSIGNMENT OF FL180 AS THEY CLIMBED THROUGH FL182 TO AVOID TRAFFIC CONFLICT.
Narrative: ON CLBOUT FROM DFW, CLRNC TO FL230, ASSIGNED HDG 270 DEGS TO INTERCEPT DFW DEP. AS TURN WAS COMMENCED TO INTERCEPT 262 DEG R DFW, A S WIND WAS NOTED AND SLIGHT OVERSHOOT OCCURRED (265 DEG R). ZFW ASSIGNED FL180 AS ACFT PASSED FL182. ALT CHKED AT FL183 AND ACFT RETURNED TO FL180. WE QUERIED CENTER ABOUT REASON FOR ALT ASSIGNMENT. CENTER REPLIED TFC INBND. FLT PROCEEDED NORMALLY TO DEST. PERHAPS INBND AND OUTBND CORRIDORS ARE TOO CLOSE.
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.