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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 446273 |
| Time | |
| Date | 199908 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : rqz.vortac |
| State Reference | AL |
| Altitude | msl bound lower : 13000 msl bound upper : 13200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : hsv.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 1500 |
| ASRS Report | 446273 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : returned to original clearance |
| Miss Distance | horizontal : 1500 vertical : 1000 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Air carrier X (hsv-atl) was at 13000 ft MSL. ATC called traffic at 12:30 O'clock and about 8 mi. We called the traffic in sight and ATC told us to 'maintain visual separation' and climb to FL210. We started a slow climb, and 13200 ft TCASII sounded a 'monitor vertical speed' advisory. We descended back to 13000 ft and traffic (aircraft Y) passed to the right about 1/2 mi at 14000 ft. I feel center should have not given us a climb at night with instructions to maintain visual separation and we should not have accepted the clearance as traffic was closer than the first officer and I originally thought. TCASII was a big help in this situation.
Original NASA ASRS Text
Title: ACR RETURNS TO INITIAL ALT AFTER ACCEPTING VISUAL CLB CLRNC DECIDING THAT HE DID NOT WANT TO CLB WITH XING TFC.
Narrative: ACR X (HSV-ATL) WAS AT 13000 FT MSL. ATC CALLED TFC AT 12:30 O'CLOCK AND ABOUT 8 MI. WE CALLED THE TFC IN SIGHT AND ATC TOLD US TO 'MAINTAIN VISUAL SEPARATION' AND CLB TO FL210. WE STARTED A SLOW CLB, AND 13200 FT TCASII SOUNDED A 'MONITOR VERT SPD' ADVISORY. WE DSNDED BACK TO 13000 FT AND TFC (ACFT Y) PASSED TO THE R ABOUT 1/2 MI AT 14000 FT. I FEEL CTR SHOULD HAVE NOT GIVEN US A CLB AT NIGHT WITH INSTRUCTIONS TO MAINTAIN VISUAL SEPARATION AND WE SHOULD NOT HAVE ACCEPTED THE CLRNC AS TFC WAS CLOSER THAN THE FO AND I ORIGINALLY THOUGHT. TCASII WAS A BIG HELP IN THIS SIT.
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.