Narrative:

We experienced a slow degradation of the captain's pitot static system. Eventually we experienced a partial shutdown of the first officer's pitot static system. Our first indication was that the autopilot acted as if it was in a mountain wave but we were over the ocean above weather. The first officer's instruments initially helped us get back on track but as we noted on our ipads using a stratus S2 with synthetic vision that those instruments were suspect too. Using pitch power and the ipad for vertical speed monitoring and not doing anything aggressive; we descended out of rvsm altitudes. Somewhere around FL220 we regained first the copilot's side and then the captain's side. An uneventful final descent and landing followed.

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Original NASA ASRS Text

Title: CE650 Captain reported a loss of all pitot-static instruments during cruise.

Narrative: We experienced a slow degradation of the Captain's pitot static system. Eventually we experienced a partial shutdown of the First Officer's pitot static system. Our first indication was that the autopilot acted as if it was in a mountain wave but we were over the ocean above weather. The First Officer's instruments initially helped us get back on track but as we noted on our iPads using a Stratus S2 with synthetic vision that those instruments were suspect too. Using pitch power and the iPad for vertical speed monitoring and not doing anything aggressive; we descended out of RVSM altitudes. Somewhere around FL220 we regained first the copilot's side and then the captain's side. An uneventful final descent and landing followed.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.