2. 1. Common Optics Assembly (COA) Main optics housing riveted on channel housing (with rod) QM delivered 12.12.2003

4. COA: Channel housing ready for assembly and riveting

5. COA: QM reveting was tested by SRON. Approved?

7. Assembling the COA FM

8. HIFI main optics mirrors produced by TPD Delft (raw) and LFM Bremen 80% of flight models delivered on 2 March 2004 Rest in May

10. Concerns None really serious ! Watch communication betweens partners (many components, many details)

11. Concerns None really serious ! Watch communication betweens partners (many components, many details)

12. Concerns None really serious ! Watch communication betweens partners (many components, many details) Mirror 137

13. Concerns None really serious ! Watch communication betweens partners (many components, many details)

14. Concerns None really serious ! Watch communication betweens partners (many components, many details)

15. Current status of COA FM: 1. Channel housing FM Eroding process is completed Ready for final machining step 2. Main Optic Housing FM Manufacturing leaving still 0.3.. 0.6 mm Final heat treatment tbd Final machining tbd Surface treatment at ABB: end of May 2004 Riveting at RUAG finished: middle of June 2004 Final assembly at HTS: end of June 2004 Delivery beginning of July 2004

16. 2. Mixer Subassemblies (MSA) 3. Diplexer Housings Delay caused by eroding problems: now solved Measurements: this week Final machining tbd First delivery of all available parts in week 20/21 2004

17. Concerns None really serious ! Delay becomes critical Watch communication betweens partners (many components, many details)