B777-200 company supplied hand microphone was accidentally keyed by the first officer's leg.

Attributes
ACN	546257
Time
Date	200205
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rjaa.airport
State Reference	FO
Altitude	msl single value : 4000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : rjtg.tracon
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	546257
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact other
Consequence	other
Supplementary
Problem Areas	Company Flight Crew Human Performance Aircraft
Primary Problem	Company
Air Traffic Incident	other

Narrative:

New 777 cockpit microphone. On approach nrt, using the boom microphone, the new hand microphone was in its holder next to the first officer's leg. First officer inadvertently keyed the hand microphone for approximately 40 seconds blocking the frequency. This microphone has unprotected transmit button and is located in a poor position both for access and for inadvertent transmission. Location needs to be changed.

Original NASA ASRS Text

Title: B777-200 COMPANY SUPPLIED HAND MIKE WAS ACCIDENTALLY KEYED BY THE FO'S LEG.

Narrative: NEW 777 COCKPIT MIKE. ON APCH NRT, USING THE BOOM MIKE, THE NEW HAND MIKE WAS IN ITS HOLDER NEXT TO THE FO'S LEG. FO INADVERTENTLY KEYED THE HAND MIKE FOR APPROX 40 SECONDS BLOCKING THE FREQ. THIS MIKE HAS UNPROTECTED XMIT BUTTON AND IS LOCATED IN A POOR POS BOTH FOR ACCESS AND FOR INADVERTENT XMISSION. LOCATION NEEDS TO BE CHANGED.

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.