First path

priority

•Passive anomaly(TA4)

–Thermal cycling: has not moved door 4 ( range -70C to 150C)

–Vibration: shaker on cell 4 did not move door

•Failure this time presumed not due to soil

•Strongesthypothesis is stictionon plunger

•Choose next door and open Cell 0

–On North edge of array opposite cell 4

–Low possibility of soil contamination to adjacent cells with revised delivery procedure(sprinkle)

Path 2 –research

priority 2

•Mechanical Engineer(DonSevila) review

•Experiments to help with door 5

–Monitoring

–Vibration cell 4

–Vibration cell 5

•Appears Feasible to deliver to TA5 at later date(targetslit or upper opening)

Path 3 -Use RA

hail mary

•Develop Methodology for RA intervention

•Planetary Protection Waiver

–Mitigation

•Cleaning for TA

•Covered by foil cover during ATLO and cruise

•UV exposure

•Competes with RA rasping validation