The guidance to operators given in CAP 753 states that the period between the successful download and assessment of any primary VHM indicator, used for monitoring the engine and rotor drive system components, should not exceed 25 hours.
This just isn't good enough. what good is it to read the results of the HUMS analysis which warns of a problem AFTER an accident?!
Originally Posted by
PlasticCabDriver
For the second flight (CHCN), yes. For the first one (REDW) the HUMS was downloaded after the first flight, and according to the report, acted on iaw the AMM.
I just wanted to avoid the usual round of ill-informed posts (that's not directed at anyone) but we went round and round this buoy at the time and it got tedious.
Tedious??!! Maybe if something was done to take the data and procedures more seriously lives would have been saved.
G-REDW had numerous HUMS alerts warning of a problem in the main gear box in the hours leading up to the accident. It's just not acceptable to say that the proper engineering procedures were followed. The procedures are obviously flawed!