First officer of an medium large transport air carrier aircraft mistakenly set the wrong frequency for the ATC center resulting in lost communication for several mins during cruise.

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Attributes
ACN	266045
Time
Date	199403
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : psm
State Reference	NH
Altitude	msl bound lower : 15000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute airway : zbw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 8500 flight time type : 3500
ASRS Report	266045
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I unknowingly switched frequency in the radio in use to the previous frequency. I was unaware of this until I contacted ZBW for a lower altitude. At that time they gave me the correct frequency and I contacted them and proceeded to pwn. At no time was there a conflict with another aircraft and none was reported by ATC.

Original NASA ASRS Text

Title: FO OF AN MLG ACR ACFT MISTAKENLY SET THE WRONG FREQ FOR THE ATC CTR RESULTING IN LOST COM FOR SEVERAL MINS DURING CRUISE.

Narrative: I UNKNOWINGLY SWITCHED FREQ IN THE RADIO IN USE TO THE PREVIOUS FREQ. I WAS UNAWARE OF THIS UNTIL I CONTACTED ZBW FOR A LOWER ALT. AT THAT TIME THEY GAVE ME THE CORRECT FREQ AND I CONTACTED THEM AND PROCEEDED TO PWN. AT NO TIME WAS THERE A CONFLICT WITH ANOTHER ACFT AND NONE WAS RPTED BY ATC.

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.