First officer reporting protests volume of TCASII commands. Controller transmissions lost account ov...

Attributes
ACN	196908
Time
Date	199112
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sna
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sna
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument pilot : cfi
Experience	flight time last 90 days : 250 flight time total : 7500 flight time type : 2000
ASRS Report	196908
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

While being radar vectored to the visual approach for runway 19 at ksna, we had 3 TCASII RA's within a couple of mins. The volume of the TCASII voice and all the commands by the TCASII made it impossible to hear ATC. I believe we missed some communication with ATC. Also, the TCASII volume makes it hard to communicate within the cockpit. Note: both pilots had headsets on. The TCASII system should have fewer voice commands and after initial command, be a lower volume.

Original NASA ASRS Text

Title: FO RPTING PROTESTS VOLUME OF TCASII COMMANDS. CTLR TRANSMISSIONS LOST ACCOUNT OVERRIDE OF TCASII.

Narrative: WHILE BEING RADAR VECTORED TO THE VISUAL APCH FOR RWY 19 AT KSNA, WE HAD 3 TCASII RA'S WITHIN A COUPLE OF MINS. THE VOLUME OF THE TCASII VOICE AND ALL THE COMMANDS BY THE TCASII MADE IT IMPOSSIBLE TO HEAR ATC. I BELIEVE WE MISSED SOME COM WITH ATC. ALSO, THE TCASII VOLUME MAKES IT HARD TO COMMUNICATE WITHIN THE COCKPIT. NOTE: BOTH PLTS HAD HEADSETS ON. THE TCASII SYS SHOULD HAVE FEWER VOICE COMMANDS AND AFTER INITIAL COMMAND, BE A LOWER 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.

First officer reporting protests volume of TCASII commands. Controller transmissions lost account override of TCASII.