Recent observations have shown that the Fe K alpha line profile of the
Seyfert 1 galaxy MCG -06-30-15 is strongly variable. We attempt accre
tion disk model fits to the Fe K alpha Line profiles in high, low, and
medium continuum luminosity phases of this source. During the monitor
ing by Iwasawa et al., a broad redshifted component remained reasonabl
y constant, while a narrower component at approximate to 6.4 keV respo
nded strongly to continuum changes. Physically consistent fits are pos
sible if the index xi of the power-law emissivity changes from 0.7 (hi
gh phase) to 3.0 (low phase). The shape of the redshifted component at
the low phase is crucial to the disk model interpretation. We suggest
that the actual shape may be a broad redshifted Gaussian. Three lines
of evidence support the interpretation of the Fe K alpha line as cons
isting of multiple components, beyond the lack of correlation in the r
esponse to continuum changes of the red and blue components in MCG -06
-30-15: (1) We show that the strong concentration of narrow-peak centr
oids at 6.4 keV is inconsistent with expectations of a random distribu
tion of disk orientations. (2) The average Fe K alpha profile for a sa
mple of 16 mostly Seyfert 1 galaxies suggests a natural decomposition
into two Gaussians: one is unshifted/narrow, and the other is redshift
ed/broad. (3) Evidence for emission in excess of the expectation of di
sk models on the high-energy side of the Fe K alpha profile is both a
challenge for low-inclination disk models and support for the two-comp
onent decomposition.