Annual Report 2015 - Spain’s National Preventive Mechanism I.4.2.  Asylum and return facilities 124.  In 2015 a visit was made to the asylum and return facilities for Terminals 1 and 4 (satellite) of Adolfo Suárez Madrid-Barajas Airport. During the visit, carried out over two phases (April 24th and May 28th), the Ombudsman herself participated together with three experts from the institution. Previous visits §73 and ss AR 2010 §245 and ss AR 2013 125.  The main objective of this follow-up visit was to inspect the installations and check if the shortcomings detected during previous visits (2010 and 2013) had been rectified. 126.  In these facilities, which are managed by the CNP, foreign citizens are held who have requested asylum at border controls (Terminal 4S) or who have not been allowed to enter Spain due to not meeting the legally established requirements. The length of stay in these facilities depends on the frequency of the flights of those airlines with which they have travelled to Spain and which are responsible for their return (people refused admittance) or the length of time taken to examine their request (asylum seekers). Inspection of the detention room in Terminal 1 86 Refurbishment works §79 AR 2010 §251 AR 2013 §378, 379 AR 2014 127.  There is still no guarantee of access for detained persons to areas with natural light and ventilation, as had been requested following the visit carried out in  2013. The necessary works to locate the existing facilities in T1, both for people who have requested asylum as well as for those who are going to remain in the T4S facilities for more than 72 hours while their rejection is resolved, have not been carried out. Unpleasant smells in the bathroom 128.  Nor had the necessary measures been taken to deal with the unpleasant smells coming from one of the bathrooms in the T1 detention facility. Registering solitary confinement §254 AR 2013 §381 AR 2014 129.  The asylum and return facilities still do not have a record book for noting incidences of separation or solitary confinement, as had been suggested following the 2013 visit. This Suggestion has been accepted.