or Resale, 2016-11-24 05:16:59 Check the source to verify that this is the current version before use. No reproduction or networking permitted without license from IHS óóà？àà？à？？？à？à？？ààààà？？？àóàóàà？ààà？？？àóóó DI-PSSS-82029 (ESWBS) entry from block 1 of the Maintenance Requirement Index (MRI). 3.2 Block 2. Nomenclature. Enter the nomenclature of the item upon which the task is performed from block 2 of the MRI. 3.3 Block 3. Ship Class. Enter ship class from block 3 of the MRI. 3.4 Bl