Aviation Electronics Technician 1 - Historic Naval Ships Association

operation. For example, the computer may cue theoperator to turn on the bomb bay door switch and themaster arm switch. The P-C3 computer also uses theordnance panel to instruct the ordnance crew memberon how to perform certain pressurized SLT loading orunloading operations (exchange between storage rackand SLTs). This enables the ordnance crew memberto make available the search store requested by theTACCO.5. Present the operator with alternatives forwhich decisions are required; for example, arming hasthree selections (nose, tail, or both). The computeralso furnishes alerts, such as components or circuitfailures and selections errors, to bring importantdevelopments to the operator’s attention.6. Calculate and initiate fly-to-point storereleases, intervals between releases for train releases,and furnish system release commands in response tocrew member release commands.7. Secure the system following each weaponrelease, check store-in-place status, update theinventory, and prepare the system for the next storeselection.MANUAL MODE.— In the P-C3, the manualmode provides the TACCO with managementcontrol of all kill and search stores. In the S-3A,each crew member controls kill and search storesunder the management of the pilot and TACCOconjunctival y.In the manual mode, the P-C3 TACCO/S-3A pilotselects the bomb bay or wing station for release, alongwith the arming and release mode of the selectedstore. These actions are executed by the control onthe weapons control panel. If required, the pilot iscued to turn on the master arm switch and open thebomb bay doors.When the station, arming, and release modes inthe P-C3 have been selected, the master arm powerwill be on, the bomb bay doors will open (ifrequired), and the kill ready lights on the ACP andTACCO manual weapons control panel willilluminate. If the selected station is loaded, thestation select keys on the ACP will light amber(S-3A). The store may then be released by the pilot,copilot, or TACCO (also the SENSO in the S-3A)by use of their release switches.The P-C3 search store release and control in themanual mode is completed by the ordnance crewmember using the controls on the search storesinterconnection box. The desired SLT is selected byusing the letter and number switches. This cues thepilot to turn on the search power switch. When theSLT has been selected and search power is on, alaunch is effected by actuating the sono launch switchon the search stores interconnection box.JettisonStore jettison of both aircraft is somewhat similarin operation and control. Manual actuation of thejettison or the external jettison switch by the pilotdisables the arming circuit and initiates jettison.In the P-C3, the jettison programmer isenergized and sends sequential release and bombbay door open/close signals. Wing stations arereleased in pairs (one from each wing) fromoutboard stations to inboard stations at 2-secondintervals. At this same time, the bomb bay doorsare opening. Then, the lower stations are released,the upper stations release after the lower stations,and then the doors are closed.A separate switch on the pilot’s console initiatesthe jettison function for wing stations only. Selectivejettison from any station may be accomplishedthrough normal manual release with the arming select(TACCO weapons panel) set on safe.In the S-3A, the wings and SLTs receive jettisoncommands from the wing and search store decoders torelease all wing stores and 59 SLTs. The SAR chuteremains loaded.Bomb bay stores, wing stores only, and wingstores from auxiliary devices (such as flare launchers)are released by using the ACP AUX rotary switch.This is done according to the load to be jettisoned. Inthis situation, the mechanical arm thumb-wheelselector must be set to safe, and the arm set switchdepressed. Armed store releases may also be initiatedin the above reamer.When the aircraft is on the ground, the jettisoncircuits of both aircraft are disabled by theweight-on-wheels switches. These switches arelocated on the right and left main landing gear (mainmounts).7-20