Just as GP said: > this gave the pilots an unreliable airspeed indication EDIT to clarify: Apparently this was misread as "unreliable (airspeed indication)" =

Just as GP said: > this gave the pilots an unreliable airspeed indication EDIT to clarify: Apparently this was misread as "unreliable (airspeed indication)" = "displaying an airspeed which was unreliable", rather than "(unreliable airspeed) indication" = "signal that airspeed should not be relied on".