Air carrier first officer switches frequency thinking he is in pre select status.

Attributes
ACN	200978
Time
Date	199202
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : smo airport : lax
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 50 flight time total : 4000 flight time type : 1500
ASRS Report	200978
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 26000
ASRS Report	201424
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : became reoriented
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After smo on vectors for approach to lax the PNF switched to lax ground control on dual head radio thinking he was just preselecting it. After not hearing approach control for over a min we discovered error and returned to approach control to maintain our sequence for landing. Supplemental information from acn 201424: I called the watch supervisor and since we did not get out of sequence or cause anyone else to he was very cooperative and concerned that we were ok. Contributing factor: all night trans-pacific.

Original NASA ASRS Text

Title: ACR FO SWITCHES FREQ THINKING HE IS IN PRE SELECT STATUS.

Narrative: AFTER SMO ON VECTORS FOR APCH TO LAX THE PNF SWITCHED TO LAX GND CTL ON DUAL HEAD RADIO THINKING HE WAS JUST PRESELECTING IT. AFTER NOT HEARING APCH CTL FOR OVER A MIN WE DISCOVERED ERROR AND RETURNED TO APCH CTL TO MAINTAIN OUR SEQUENCE FOR LNDG. SUPPLEMENTAL INFO FROM ACN 201424: I CALLED THE WATCH SUPVR AND SINCE WE DID NOT GET OUT OF SEQUENCE OR CAUSE ANYONE ELSE TO HE WAS VERY COOPERATIVE AND CONCERNED THAT WE WERE OK. CONTRIBUTING FACTOR: ALL NIGHT TRANS-PACIFIC.

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.