<< >> NASA ASRS Report 866149, December 2009

Communication was blocked between tower and an air carrier crew by the warnings issued by the aircraft's raas (runway awareness and advisory system).

Attributes
ACN	866149
Time
Date	200912
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Tower
State Reference	US
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	GPWS
Person 1
Function	Captain Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

I have written up raas before. We were rolling towards the end of the runway. Just as tower issued us instructions to clear the runway; raas reported '2000 feet to end of runway;' or whatever it says at that point and totally overrode the tower communication. I had to ask tower to repeat and nearly didn't near them again because of the 500 feet to end of runway call by raas. This system is a total distraction to the cockpit crew and should not be installed. At the least put in an on/off switch. Just what we don't need is another distraction in the cockpit to help that one crew in a million who could actually use the help of raas.

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Original NASA ASRS Text

Title: Communication was blocked between Tower and an Air Carrier crew by the warnings issued by the aircraft's RAAS (Runway Awareness and Advisory System).

Narrative: I have written up RAAS before. We were rolling towards the end of the runway. Just as Tower issued us instructions to clear the runway; RAAS reported '2000 feet to end of runway;' or whatever it says at that point and totally overrode the Tower communication. I had to ask Tower to repeat and nearly didn't near them again because of the 500 feet to end of runway call by RAAS. This system is a total distraction to the cockpit crew and should not be installed. At the least put in an on/off switch. Just what we don't need is another distraction in the cockpit to help that one crew in a million who could actually use the help of RAAS.

Data retrieved from NASA's ASRS site as of April 2012 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.