bad sector and unused area.

I have a raid5 of 3 disks.

2 of them have bad sectors.  Sector 1110 and 1118.

I'm curious to know if these sectors actually contain any data or if they
can just be overwritten.

All 3 disks are partitioned with partition starting at sector 128.

The raid was created some time ago.  I have never replaced any of the disks.

mdadm -E of one of the disks shows the following information (just relevent
to the question)
        Version : 1.1
    Data Offset : 262144 sectors
   Super Offset : 0 sectors
   Unused Space : before=262072 sectors, after=290 sectors

Doing the math, from offset 0 to 71 I would assume is the superblock.  Given
the bad sectors as shown by the kernel logs, 1110 and 1118 would fall in the
unused space.

So if I were to dd if=/dev/zero of=/dev/sda count=262072 seek=200, would
this break my array?  This command would be against the whole disk, not
partition.

I do have multiple backups of this system.

FYI, I did initiate a check to verify the data area, and there's no bad
sectors there.