Narrative:

Aircraft X pilot initiated go-around at about a 2-3 mile final unable to contact the tower. On position relief I plugged in handset for midnight operations and did not select the loudspeakers on the etvs (enhanced terminal voice switch). The aircraft's first attempted contact; just after the position relief briefing; was completed but was not heard due to the loudspeaker not being turned on. I was picking up the handset to see if aircraft X had forgotten to check in when the A90 line began to ring and I noticed that the speaker was not selected and aircraft X had started climbing on the go-around. Conditions were VFR and I instructed aircraft X to join the downwind to follow the air carrier B737 that was on a 7 mile final; aircraft X acknowledged but contacted approach for re-sequencing and landed without further incident. Recommendation; to accomplish the minimum position relief period 5 minutes of overtime is scheduled for the mid controller to pre brief and the evening controller to post brief before having to sign out; this leads to the briefing process feeling rushed; even when all information is passed and understood. I believe this was a factor in forgetting to turn on the speaker.

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Original NASA ASRS Text

Title: MHT Controller described a go-around event when traffic on final was unable to contact tower; the reporter acknowledged they failed to set ETVS properly to hear speaker.

Narrative: Aircraft X pilot initiated go-around at about a 2-3 mile final unable to contact the Tower. On position relief I plugged in handset for Midnight operations and did not select the loudspeakers on the ETVS (Enhanced Terminal Voice Switch). The aircraft's first attempted contact; just after the position relief briefing; was completed but was not heard due to the loudspeaker not being turned on. I was picking up the handset to see if Aircraft X had forgotten to check in when the A90 line began to ring and I noticed that the speaker was not selected and Aircraft X had started climbing on the go-around. Conditions were VFR and I instructed Aircraft X to join the downwind to follow the Air Carrier B737 that was on a 7 mile final; Aircraft X acknowledged but contacted approach for re-sequencing and landed without further incident. Recommendation; To accomplish the minimum position relief period 5 minutes of overtime is scheduled for the Mid controller to pre brief and the evening controller to post brief before having to sign out; this leads to the briefing process feeling rushed; even when all information is passed and understood. I believe this was a factor in forgetting to turn on the speaker.

Data retrieved from NASA's ASRS site as of April 2012 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.