NASA/GSFC intends to issue an increase-in-scope to contract NAS5-30384 with ITT Space Systems Corporation for the acquisition of an Advanced Very High Resolution Radiometer (AVHRR) integrated system. The AVHRR integrated system consists of one six channel imaging AVHRR instrument and one optional interface unit to the NPOESS C1 spacecraft. The AVHRR shall be integrated to, tested, and launched on the NPOESS C1 mission.