<< >> NASA ASRS Report 589871, August 2003

An emj captain reported aircraft type recurrent communication problems due to a ptt switch while flying in phl airspace.

Attributes
ACN	589871
Time
Date	200308
Day	Fri
Place
Locale Reference	airport : phl.airport
State Reference	PA
Aircraft 1
Controlling Facilities	tracon : phl.tracon
Operator	common carrier : air carrier
Make Model Name	Embraer Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	589871
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During climb out, I could hear the first officer over the interphone. He and I checked headset jacks and yoke press to talk switches, without results. I then noticed the text caption on the #1 rmu. I then applied repeated pressure to the glare shield press to talk switch and then it released. Communication with ATC was re-established. I refrained from using the switch in question for the rest of the flight. This is a frequent problem with the emb series aircraft.

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Original NASA ASRS Text

Title: AN EMJ CAPT RPTED ACFT TYPE RECURRENT COM PROBS DUE TO A PTT SWITCH WHILE FLYING IN PHL AIRSPACE.

Narrative: DURING CLBOUT, I COULD HEAR THE FO OVER THE INTERPHONE. HE AND I CHKED HEADSET JACKS AND YOKE PRESS TO TALK SWITCHES, WITHOUT RESULTS. I THEN NOTICED THE TEXT CAPTION ON THE #1 RMU. I THEN APPLIED REPEATED PRESSURE TO THE GLARE SHIELD PRESS TO TALK SWITCH AND THEN IT RELEASED. COM WITH ATC WAS RE-ESTABLISHED. I REFRAINED FROM USING THE SWITCH IN QUESTION FOR THE REST OF THE FLT. THIS IS A FREQUENT PROB WITH THE EMB SERIES ACFT.

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.