# Commission Regulation (EU) No 965/2012 of 5 October 2012 laying down technical requirements and administrative procedures related to air operations pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council, Division SPA.HOFO.155: Vibration health monitoring (VHM) system

Extent: E+W+S+N.I.

(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.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/V/division/subpart+k/division/spahofo155 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-V/division-subpart+k/division-spahofo155
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.