Beskrivning : The primary purpose of the San Marco-D/L (San Marco 5) Spacecraft was to explore the relationship between solar activity and thermosphere-ionosphere phenomena. The spacecraft had a planned lifetime of one year.
The spacecraft reentered on schedule on 6 December 1988. All instruments operated as planned, except WATI which failed to respond to commands after 20 days (fuse failure). The spacecraft performed nominally throughout its lifetime. Final data were acquired at 150 km during re-entry. Malindi (Kenya) post stamp.