Mínimum criteria in deprivation of liberty 354. On some of the supervised flights no interpreter was present and a large number of persons who were to be expelled did not speak either Spanish or English. The NPM considers the presence of an interpreter to be necessary in all repatriation operations. 355. The medical documentation of repatriates must remain in closed envelopes, accessible only to healthcare personnel, as established by article 16 of Act 41/2002, of 14 November, organic act regulating patient autonomy and the rights and obligations relating to matters of clinical information and documentation. 356. Both a defibrillator and a refrigerator should be available for the eventual conservation of medicines such as insulin, on flights organised by Spain and on those operated by FRONTEX. 357. It has been observed, and this is a matter of concern, that the transportation of pregnant women and minors to the plane and their seating in it is not always carried out in a manner that they do not make contact with other citizens not of their own family, so that the necessary measures should be established for this not to occur. 358. It would be advisable for a record book to enter all means of restraint used in the custody of the persons to be repatriated to be enabled at the facilities of the UCER of Adolfo Suárez Madrid-Barajas Airport and during the flight. Restraint belt at the boarding of the FRONTEX Operation to Pakistan 359. In line with paragraph 44 of the 13th General Report of the CPT, it is to be pointed out that it would be advisable to establish a video-recording system to record the operations for expulsion carried out by Spain and by FRONTEX, particularly where the deportation is considered to be contentious. 360. It has been verified, and this is a reason for concern, that sometimes the custody forms of detainees do not record all the occurrences with citizens who will be repatriated in flights organised by Spain, in particular, the telephone communication with their family relatives, thus ensuring the chain of custody and incidents. 115