Narrative:

During a xfer of aircraft control on autoplt, aircraft was in an unnoticed 10 degree left bank turn. Turn was not noticed until approximately 60 degrees off desired heading (navigating on airways, not on vectors). Immediate turn to desired course was initiated. Estimated deviation from course centerline was 10 NM. No conflict existed. Cockpit distraction was probable cause.

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Original NASA ASRS Text

Title: AN ACR FLC IN A B727 INADVERTENTLY TURNED OFF COURSE WHILE CHANGING CTL OF THE ACFT.

Narrative: DURING A XFER OF ACFT CTL ON AUTOPLT, ACFT WAS IN AN UNNOTICED 10 DEG L BANK TURN. TURN WAS NOT NOTICED UNTIL APPROX 60 DEGS OFF DESIRED HDG (NAVING ON AIRWAYS, NOT ON VECTORS). IMMEDIATE TURN TO DESIRED COURSE WAS INITIATED. ESTIMATED DEV FROM COURSE CTRLINE WAS 10 NM. NO CONFLICT EXISTED. COCKPIT DISTR WAS PROBABLE CAUSE.

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.