Originally Posted by
Apate
The S-61/Sea King idea ported across to the S-92, using an "emergency sump and pump", will likely not be limited to 30 mins. The new MGB doesn't just contain this new arrangement, it also contains gears made from different materials that are more heat tolerant and durable.
As I wrote before, the new nearbox is welcomed but, by the manufacturer words, doesn't solve all gearbox weaknessess. When the MGB bypass valve closed in a S-92A in Norway recently, with no oil loss, the transmission took 28 minutes to reach 152°C at landing. On the simulator, when a leak is contained and the bypass valve closes, the temperature rises even faster.