An apparatus and method for compensation for variation in timing skew in a
disc drive having at least one rotating disc is provided. A first head is
positioned over a first disc surface and a second head is positioned over
a second disc surface. The first disc surface includes a track having a
first plurality of sectors and the second disc surface includes a track
having a second plurality of sectors. Each sector of the second plurality
of the sectors corresponds to a different sector of the first plurality
of sectors, thereby forming a plurality of pairs of corresponding
sectors. A timing skew value for each pair of corresponding sectors is
computed to obtain a sequence of timing skew values. Data related to the
sequence of timing skew values is utilized to compensate for variation in
timing skew.