| 194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
| 247 | DF | INCLUDING PART LOCKED BY DETENT AND RELEASED BY CHECK {3} |
| 249 | DF | .~ And means to impart thrust to check to unlock part {4} |
| 253 | DF | .~.~ Pivoted detent {2} |
| 254 | DF | .~.~.~ And pivoted released part {2} |
| 255 | ![]() | .~.~.~.~ Unidirectionally pivoted |