SPA.HOFO.155 Vibration health monitoring
(VHM) system
Regulation (EU) 2016/1199
(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 (CofA) 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 CofA before 1 January 2017;
(3) all helicopters first issued with an individual CofA 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.
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