Narrative:

During takeoff second segment climb approximately 100-200 ft, after gear retraction, while at approximately 15 degree vertical pitch, TCASII RA 'traffic, traffic' audio alert occurred. We had departed behind another turboprop with approximately 2 mi separation, which of course would give us this alert, especially since our mdt is faster than an light transport. The problem with the RA is that it becomes a distraction during a 'critical phase of flight'. Our company training specifies between liftoff and 400 ft AGL. The only actions to be taken are gear retraction and yaw damper on, due to the seriousness of this time period. Introduce this loud aural alert and now attention is diverted away from the PF's scan, and the PNF's monitoring of the engine gauges, etc, even though we had the aircraft in sight visually during this entire time. Solution: put an inhibit system on the TCASII where the PIC could inhibit the aural alert during a critical phase of flight. This will prevent pilots from flying with it off.

Related reports:

Google
 

Original NASA ASRS Text

Title: MDT PIC RPTS FLC DISTR AUDITORY INTERFERENCE CREATED BY TCASII AUDIBLE ALERT DURING THE INITIAL CLB PHASE BEHIND ANOTHER ACFT ON DEP.

Narrative: DURING TKOF SECOND SEGMENT CLB APPROX 100-200 FT, AFTER GEAR RETRACTION, WHILE AT APPROX 15 DEG VERT PITCH, TCASII RA 'TFC, TFC' AUDIO ALERT OCCURRED. WE HAD DEPARTED BEHIND ANOTHER TURBOPROP WITH APPROX 2 MI SEPARATION, WHICH OF COURSE WOULD GIVE US THIS ALERT, ESPECIALLY SINCE OUR MDT IS FASTER THAN AN LTT. THE PROBLEM WITH THE RA IS THAT IT BECOMES A DISTR DURING A 'CRITICAL PHASE OF FLT'. OUR COMPANY TRAINING SPECIFIES BTWN LIFTOFF AND 400 FT AGL. THE ONLY ACTIONS TO BE TAKEN ARE GEAR RETRACTION AND YAW DAMPER ON, DUE TO THE SERIOUSNESS OF THIS TIME PERIOD. INTRODUCE THIS LOUD AURAL ALERT AND NOW ATTN IS DIVERTED AWAY FROM THE PF'S SCAN, AND THE PNF'S MONITORING OF THE ENG GAUGES, ETC, EVEN THOUGH WE HAD THE ACFT IN SIGHT VISUALLY DURING THIS ENTIRE TIME. SOLUTION: PUT AN INHIBIT SYS ON THE TCASII WHERE THE PIC COULD INHIBIT THE AURAL ALERT DURING A CRITICAL PHASE OF FLT. THIS WILL PREVENT PLTS FROM FLYING WITH IT OFF.

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.