RFC 638 IMP/TIP Preventive Maintenance Schedule April 1974 First Wednesday 14 CARNEGIE [0830-1130] 2 SRI [1200-1500] First Thursday 26 SDAC [0830-1130] 4 UTAH [1030-1330] 41 NORSAR [0830-1130] 42 LONDON [0830-1130] Second Monday 6 MIT-MAC [0830-1130] 44 MIT-IPC [1200-1500] 25 DOCB [1030-1330] Second Tuesday 17 MITRE [0830-1130] 23 USC [1130-1430] Second Wednesday 31 CCA [0830-1130] 11 STANFORD [1200-1500] 32 XEROX [1400-1700] 18 RADC [0900-1200] Second Thursday 27 BELVOIR [0830-1130] 35 UCSD [1130-1430] 37 RML [0930-1230] McKenzie