SR22 pilot reported disabling radio transmissions by plugging the headset into the wrong jack.

Narrative:

I was solo. Aircraft was familiar but had not flown it in 7 months. Two flights involved. First flight was uneventful; all good. I removed my headset from the aircraft between the first and second flight and; when I plugged it back into the airplane for the second flight; I plugged it into the right side jacks instead of the proper left side jacks (I was sitting on the left side.) unfortunately; I did not notice that I had mistakenly done this. I was operating out of an uncontrolled field and flew to another uncontrolled field. Audio was fine (i.e. I could hear other aircraft at all locations) and I was making standard calls. Unfortunately--and I didn't realize it--my transmissions were not going out. (I do recall thinking the sidetone was different/unusual but I chalked that up to lack of recent experience in this type.) eventually; I realized I wasn't being heard; I asked for radio checks and heard no response. I used my headphones bluetooth capability to call my destination tower and advise them of my situation; telling them I could hear them but not transmit. Over their radio freq they advised me to squawk 7600; which I did. I responded to their directions; including a command to remain outside their class D. Not sure why they didn't try to get me in NORDO but I guess they were busy. I then realized what I had done and fixed the problem. Squawked 1200; contacted tower and advised problem resolved. Rest of flight uneventful.

Original NASA ASRS Text

Title: SR22 pilot reported disabling radio transmissions by plugging the headset into the wrong jack.

Narrative: I was solo. Aircraft was familiar but had not flown it in 7 months. Two flights involved. First flight was uneventful; all good. I removed my headset from the aircraft between the first and second flight and; when I plugged it back into the airplane for the second flight; I plugged it into the RIGHT side jacks instead of the proper LEFT side jacks (I was sitting on the left side.) Unfortunately; I did not notice that I had mistakenly done this. I was operating out of an uncontrolled field and flew to another uncontrolled field. Audio was fine (i.e. I could hear other aircraft at all locations) and I was making standard calls. Unfortunately--and I didn't realize it--my transmissions were not going out. (I do recall thinking the sidetone was different/unusual but I chalked that up to lack of recent experience in this type.) Eventually; I realized I wasn't being heard; I asked for radio checks and heard no response. I used my headphones Bluetooth capability to call my destination tower and advise them of my situation; telling them I could hear them but not transmit. Over their radio freq they advised me to squawk 7600; which I did. I responded to their directions; including a command to remain outside their Class D. Not sure why they didn't try to get me in NORDO but I guess they were busy. I then realized what I had done and fixed the problem. Squawked 1200; contacted tower and advised problem resolved. Rest of flight uneventful.

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	1622359
Time
Date	201902
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Visual Approach
Flight Plan	VFR
Component
Aircraft Component	Air/Ground Communication
Person 1
Function	Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 9000 Flight Crew Type 15
Events
Anomaly	Deviation - Procedural Published Material / Policy