A B767 crew loses temporary contact with sju approach controller when the VHF #1 volume control was accidentally turned down. A 1 min loss of radio contact occurred, no conflicts.

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Attributes
ACN	403250
Time
Date	199805
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sju
State Reference	PR
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sju
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach
Route In Use	arrival other enroute : atlantic enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	403250
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	403309
Events
Anomaly	aircraft equipment problem : less severe non adherence : far
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Location: 20 mi west of sju airport. While flying an intercept heading for runway 10, I accidentally bumped the volume switch on the radio while on approach control and was off the air for about 1 min. When I realized my error, I called approach control and they asked where we were. We then were cleared for the approach. There was no altitude deviation or traffic conflict.

Original NASA ASRS Text

Title: A B767 CREW LOSES TEMPORARY CONTACT WITH SJU APCH CTLR WHEN THE VHF #1 VOLUME CTL WAS ACCIDENTALLY TURNED DOWN. A 1 MIN LOSS OF RADIO CONTACT OCCURRED, NO CONFLICTS.

Narrative: LOCATION: 20 MI W OF SJU ARPT. WHILE FLYING AN INTERCEPT HDG FOR RWY 10, I ACCIDENTALLY BUMPED THE VOLUME SWITCH ON THE RADIO WHILE ON APCH CTL AND WAS OFF THE AIR FOR ABOUT 1 MIN. WHEN I REALIZED MY ERROR, I CALLED APCH CTL AND THEY ASKED WHERE WE WERE. WE THEN WERE CLRED FOR THE APCH. THERE WAS NO ALTDEV OR TFC CONFLICT.

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.