Does the 4P have dual outflow valves like the other 2 aircraft I know of? If so, is the emergency valve set slightly higher than the other? If the 4P does not have dual outflow valves how does the airframe protect against overpressurization? I could not find the details online in a quick search. but -2500 gets me a tad over the 5.5 psi and seems to work well)
|