If MGB pressure drops below 5 psi it is LAND IMMEDIATE.
Which is strange as Nicklappos stated on 31 July 2004:
http://www.pprune.org/rotorheads/191...ml#post1454917
And the S-92's oil protection system protected the transmission to the FAR/JAR with such aplomb that we shut the test down at 3 hours, not 30 minutes, with the system still running along (but admittedly pretty close to its end). That is 2 1/2 hours longer than required. The pilot must activate the system, but has several seconds to do so after clear indications, and the checklist does not say "land immediately."
and
http://www.pprune.org/rotorheads/191...ml#post1455317
vertalop,
The oil system, and the entire aircraft, meet FAR/JAR ammendment 47 (the latest). The FAA sat next to us as the transmission ran those 3 hours!
look for a private message, with some additional thoughts.
best,
Nick
Looks to me Sikorsky never did an oil out test, just closed off the oil cooler and ran with hot oil and ignored loss of oil from elsewhere, inspiring unwarrented confidence.