Mht controller described a go-around event when traffic on final was unable to contact tower; the re...

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.

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.

Attributes
ACN	869054
Time
Date	201001
Local Time Of Day	0001-0600
Place
Locale Reference	MHT.Tower
State Reference	NH
Aircraft 1
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Flight Data / Clearance Delivery Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

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.