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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Tower instructed DC9 at lga airport to go around due to traffic on the runway. During the go around, the DC9 crew were not immediately able to communicate with tower for a heading and altitude. Tower finally instructed DC9 to maintain 1000 ft. At the same time the crew received a TCASII RA to descend. At 1000 ft, the crew observed a commuter fly overhead at about 1500 ft. The captain said the TCASII worked fine but the volume is not loud enough.
| Attributes | |
| ACN | 408320 |
| Time | |
| Date | 199807 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lga |
| State Reference | NY |
| Altitude | msl bound lower : 1000 msl bound upper : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| 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 : 15000 flight time type : 8000 |
| ASRS Report | 408320 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action none taken : unable |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
Narrative:
Visual approach to runway 31 (lga). At 200 ft MSL tower ordered a go around due to traffic on runway. We tried to get a heading and altitude from tower, but frequency was busy. At 1000 ft MSL, tower told us to level off. At the same time, we got a TCASII resolution to descend. I forced the aircraft back to 1000 ft and then watched a commuter aircraft go overhead at about 1500 ft MSL. Please bear in mind that all of this happened in about 60 seconds with the aircraft climbing at 2500 FPM. The tower barely caught the conflict and the TCASII worked. However, the TCASII is not loud enough. Its resolutions are not sent to the headsets, and the speaker voice level was barely audible. Believe me, in a situation like this one, you want that TCASII to let you know what to do. Either connect the TCASII to the headsets, or turn up the volume.
Original NASA ASRS Text
Title: TWR INSTRUCTED DC9 AT LGA ARPT TO GAR DUE TO TFC ON THE RWY. DURING THE GAR, THE DC9 CREW WERE NOT IMMEDIATELY ABLE TO COMMUNICATE WITH TWR FOR A HEADING AND ALT. TWR FINALLY INSTRUCTED DC9 TO MAINTAIN 1000 FT. AT THE SAME TIME THE CREW RECEIVED A TCASII RA TO DSND. AT 1000 FT, THE CREW OBSERVED A COMMUTER FLY OVERHEAD AT ABOUT 1500 FT. THE CAPT SAID THE TCASII WORKED FINE BUT THE VOLUME IS NOT LOUD ENOUGH.
Narrative: VISUAL APCH TO RWY 31 (LGA). AT 200 FT MSL TWR ORDERED A GAR DUE TO TFC ON RWY. WE TRIED TO GET A HEADING AND ALT FROM TWR, BUT FREQ WAS BUSY. AT 1000 FT MSL, TWR TOLD US TO LEVEL OFF. AT THE SAME TIME, WE GOT A TCASII RESOLUTION TO DSND. I FORCED THE ACFT BACK TO 1000 FT AND THEN WATCHED A COMMUTER ACFT GO OVERHEAD AT ABOUT 1500 FT MSL. PLEASE BEAR IN MIND THAT ALL OF THIS HAPPENED IN ABOUT 60 SECONDS WITH THE ACFT CLBING AT 2500 FPM. THE TWR BARELY CAUGHT THE CONFLICT AND THE TCASII WORKED. HOWEVER, THE TCASII IS NOT LOUD ENOUGH. ITS RESOLUTIONS ARE NOT SENT TO THE HEADSETS, AND THE SPEAKER VOICE LEVEL WAS BARELY AUDIBLE. BELIEVE ME, IN A SIT LIKE THIS ONE, YOU WANT THAT TCASII TO LET YOU KNOW WHAT TO DO. EITHER CONNECT THE TCASII TO THE HEADSETS, OR TURN UP THE VOLUME.
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.