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Air carrier-large transport allowed to climb through altitude of air carrier-medium large transport resulting in less than standard separation.
| Attributes | |
| ACN | 82038 |
| Time | |
| Date | 198802 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : iah |
| State Reference | TX |
| Altitude | msl bound lower : 7500 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct enroute : on vectors |
| 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 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 82038 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 15500 flight time type : 3000 |
| ASRS Report | 81803 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
On departure out of iah 14L, tower gave a 260 degree heading climb to 4000'. Departure control gave 270 degree heading, climb to 15000' direct aus when able. Passing through 6500' departure control gave us immediate turn to 300 degree heading and after I acknowledged he said maintain present altitude. We leveled at 7500' (approximately) and were just above the tops of the clouds. In the turn second officer spotted the bottom of the conflicting aircraft (an air carrier large transport or medium large transport) also in a right turn away from us. We estimate the aircraft passed about a mile south of us and a little below.
Original NASA ASRS Text
Title: ACR-LGT ALLOWED TO CLIMB THROUGH ALT OF ACR-MLG RESULTING IN LESS THAN STANDARD SEPARATION.
Narrative: ON DEP OUT OF IAH 14L, TWR GAVE A 260 DEG HDG CLB TO 4000'. DEP CTL GAVE 270 DEG HDG, CLB TO 15000' DIRECT AUS WHEN ABLE. PASSING THROUGH 6500' DEP CTL GAVE US IMMEDIATE TURN TO 300 DEG HDG AND AFTER I ACKNOWLEDGED HE SAID MAINTAIN PRESENT ALT. WE LEVELED AT 7500' (APPROX) AND WERE JUST ABOVE THE TOPS OF THE CLOUDS. IN THE TURN S/O SPOTTED THE BOTTOM OF THE CONFLICTING ACFT (AN ACR LGT OR MLG) ALSO IN A RIGHT TURN AWAY FROM US. WE ESTIMATE THE ACFT PASSED ABOUT A MILE S OF US AND A LITTLE BELOW.
Data retrieved from NASA's ASRS site as of August 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.