Narrative:

In heavy maintenance hangar; I was helping perform aircraft maintenance manual (amm) task [check for rudder movement]. I gave clear for hydraulics from the hangar floor with company supplied radio to mr. A in cockpit. I heard mr. B give the okay to move the rudder on the radio to the cockpit. Then I heard mr. B say stop; stop; stop on the radio prior to the rudder hitting the tail stand.event occurred due to the fact that the 2-way company supplied radio's failed during performing this task and not having the information before performing this task that the A330 rudder cannot go full travel in this tail stand at this height. Bay tail docks are all configured differently.have the information that the rudder swinging to full travel hits this tail stand even if the rudder has been cleared at this height. Having warnings posted on all levels of tail stand informing tail stand needs to be lowered below rudder to swing fully. Radio's need to be upgraded. Refresher training. Need bay operation differences if moving from one bay to another bay for an extended time frame.aircraft in tail dock. Company did not inform me rudder could not move full travel in current taildock position.

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Original NASA ASRS Text

Title: A Maintenance Crew working on an Airbus A330 reported that the rudder contacted the tail stand when they tested the rudder operation.

Narrative: In heavy maintenance hangar; I was helping perform Aircraft Maintenance Manual (AMM) task [check for rudder movement]. I gave clear for hydraulics from the hangar floor with company supplied radio to Mr. A in cockpit. I heard Mr. B give the okay to move the rudder on the radio to the cockpit. Then I heard Mr. B say stop; stop; stop on the radio prior to the rudder hitting the tail stand.Event occurred due to the fact that the 2-way company supplied radio's failed during performing this task and not having the information before performing this task that the A330 rudder cannot go full travel in this tail stand at this height. Bay tail docks are all configured differently.Have the information that the rudder swinging to full travel hits this tail stand even if the rudder has been cleared at this height. Having warnings posted on all levels of tail stand informing tail stand needs to be lowered below rudder to swing fully. Radio's need to be upgraded. Refresher training. Need bay operation differences if moving from one bay to another bay for an extended time frame.Aircraft in tail dock. Company did not inform me rudder could not move full travel in current taildock position.

Data retrieved from NASA's ASRS site 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.