Flight crew experiences a stuck mic during initial climb and attribute the problem to the combinatio...

Narrative:

The taxi out and takeoff were routine and uneventful. We were flying an aircraft that had the new version of the acp [audio control panel] installed with the latching hot microphone function. Upon our initial climbout at approximately 2200 MSL we were handed from tower to departure control. We made initial contact with departure and were cleared to 12;000 feet. We continued our climb and at some point our microphone became stuck. We were adhering to the sterile cockpit and at 10;000 feet the captain (PF) called for the climb checklist. We ran the climb check and continued to climb and level at 12;000 feet. At this time we had a small discussion about our agent and how our initial loadsheet was incorrect and how the agent had tried to justify his error on the original loadsheet. After a short period of time I started to question; to myself; why we hadn't gotten a further climb. At that time I attempted to call departure on comm 1 and quickly realized that I was not receiving a response. I attempted to switch to comm 2 and at that time realized that we had a stuck microphone. Upon switching to comm 2 we still had a stuck microphone; and I motioned to the captain as such. He picked up my motions quickly as we had previously discussed how he had gotten a stuck microphone with his bose headset. He then reached up and unplugged his headset and within a few seconds the stuck microphone was cleared. I then was able to contact departure on comm 2 and he stated that he had been trying to call us but was unable but he could hear us. He then gave us a frequency change and we continued on. The rest of the flight continued with the captain using a backup headset and I was using a bose. No more stuck mics were encountered on this flight. To the best of my knowledge no violation of the sterile cockpit was committed and no inappropriate language was used on the open microphone.

Original NASA ASRS Text

Title: Flight crew experiences a stuck mic during initial climb and attribute the problem to the combination of a new ACP and a Bose headset. When the headset is unplugged the stuck mic goes away.

Narrative: The taxi out and takeoff were routine and uneventful. We were flying an aircraft that had the new version of the ACP [Audio Control Panel] installed with the latching hot MIC function. Upon our initial climbout at approximately 2200 MSL we were handed from Tower to Departure Control. We made initial contact with Departure and were cleared to 12;000 feet. We continued our climb and at some point our microphone became stuck. We were adhering to the sterile cockpit and at 10;000 feet the Captain (PF) called for the Climb Checklist. We ran the climb check and continued to climb and level at 12;000 feet. At this time we had a small discussion about our Agent and how our initial loadsheet was incorrect and how the Agent had tried to justify his error on the original loadsheet. After a short period of time I started to question; to myself; why we hadn't gotten a further climb. At that time I attempted to call Departure on COMM 1 and quickly realized that I was not receiving a response. I attempted to switch to COMM 2 and at that time realized that we had a stuck MIC. Upon switching to COMM 2 we still had a stuck MIC; and I motioned to the Captain as such. He picked up my motions quickly as we had previously discussed how he had gotten a stuck MIC with his Bose headset. He then reached up and unplugged his headset and within a few seconds the stuck MIC was cleared. I then was able to contact departure on COMM 2 and he stated that he had been trying to call us but was unable but he could hear us. He then gave us a frequency change and we continued on. The rest of the flight continued with the Captain using a backup headset and I was using a Bose. No more stuck MICs were encountered on this flight. To the best of my knowledge no violation of the sterile cockpit was committed and no inappropriate language was used on the open MIC.

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.

Attributes
ACN	1216562
Time
Date	201411
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Microphone
Person 1
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 144
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 114 Flight Crew Type 8500
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Other / Unknown

Flight crew experiences a stuck mic during initial climb and attribute the problem to the combination of a new acp and a bose headset. When the headset is unplugged the stuck mic goes away.