SPA.HOFO.155 Vibration health monitoring (VHM) system

(a) The following helicopters conducting CAT offshore operations in a hostile environment shall be fitted with a VHM system capable of monitoring the status of critical rotor and rotor drive systems by 1 January 2019:

(1)  complex motor-powered helicopters first issued with an individual Certificate of Airworthiness (C of A) after 31 December 2016;

(2)  all helicopters with a maximum operational passenger seating configuration (MOPSC) of more than 9 and first issued with an individual C of A before 1 January 2017;

(3)  all helicopters first issued with an individual C of A after 31 December 2018.

(b) The operator shall have a system to:

(1)  collect the data including system generated alerts;

(2)  analyse and determine component serviceability; and

(3)  respond to detected incipient failures.