| 165 / | HD | HEAT EXCHANGE |
| DIG 454 | DD | HAVING SIDE-BY-SIDE CONDUITS STRUCTURE OR CONDUIT SECTION {16} |
| DIG 495 | DD | .~ Single unitary conduit structure bent to form flow path with side-by-side sections {2} |
| DIG 497 | DD | .~.~ Serpentine flow path with straight side-by-side sections {1} |
| DIG 498 | | .~.~.~ Fin assembly extends across side-by-side sections |