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Air carrier first officer complains about nuisance TCASII warning during multiple runway operation. Takeoffs being made from parallel runways at lax.
| Attributes | |
| ACN | 194863 |
| Time | |
| Date | 199111 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : takeoff climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6000 flight time type : 700 |
| ASRS Report | 194863 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On takeoff lax runway 25R with TCASII in TA mode, got approximately 8 traffic warnings from a 24L parallel departure. This constant advisory was distracting to say the least and made hearing tower communication so difficult that we finally turned the TCASII off. Once the other departure was divergent, TCASII was turned back on. What we need is some kind of mute function that temporarily stops further 'traffic' calls once a particular target has been idented as traffic, without inhibiting a 'traffic' call from a newly idented target.
Original NASA ASRS Text
Title: ACR FO COMPLAINS ABOUT NUISANCE TCASII WARNING DURING MULTIPLE RWY OP. TKOFS BEING MADE FROM PARALLEL RWYS AT LAX.
Narrative: ON TKOF LAX RWY 25R WITH TCASII IN TA MODE, GOT APPROX 8 TFC WARNINGS FROM A 24L PARALLEL DEP. THIS CONSTANT ADVISORY WAS DISTRACTING TO SAY THE LEAST AND MADE HEARING TWR COM SO DIFFICULT THAT WE FINALLY TURNED THE TCASII OFF. ONCE THE OTHER DEP WAS DIVERGENT, TCASII WAS TURNED BACK ON. WHAT WE NEED IS SOME KIND OF MUTE FUNCTION THAT TEMPORARILY STOPS FURTHER 'TFC' CALLS ONCE A PARTICULAR TARGET HAS BEEN IDENTED AS TFC, WITHOUT INHIBITING A 'TFC' CALL FROM A NEWLY IDENTED TARGET.
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.