Which major subsystems make up the AH-64D Sight Systems?
Target Acquisition and Designation System (TADS)
Integrated Helmet And Display Sight System (IHADSS)
Fire Control Radar (FCR)/Radar Frequency Interferometer (RFI)
What is a sight?
A device used to guide or aim the weapon systems. (TADS, HMD, and the FCR are considered sights)
What sights can be selected for weapons delivery from the pilots crew station?
FCR and HMD
What is the purpose of the Target Acquisition and Designation System (TADS) Sensor Select switch on the Left Handgrip (LHG)?
Used to select one of the two available TADS sensors: Day Television (DTV) or Forward Looking Infrared (FLIR)
What is the purpose of the Laser Spot Tracker (LT) switch on the Right Handgrip (RHG)?
Used to activate the TADS laser spot tracker in one of two modes: manual or automatic.
What is the purpose of the SLAVE button on the RHG?
To slave to: or, get cueing to: the CPG's currently selected acquisition source.
What is the default sight for both crewmembers?
Helmet Mounted Display (HMD)
When the pilot selects TADS from the Sight Select switch on the collective, what happens?
Nothing. The pilot cannot Sight Select TADS, though the option exists on the collective, it is non-functional in the back seat.
Where do you look to determine when the FCR has been selected as a sight?
The Sight Select Status field of their HAD, the Weapons page and the FCR page.
If the pilot sight selects the FCR and the CPG had it selected as the sight, what sight does the CPG get by default?
If the NVS mode switch is OFF - The CPG will default to TADS
If the NVS mode switch is NORM or FIXED - The CPG will default to HMD
What acquisition sources are available to the crewmembers?
PHS, GHS, SKR, RFI, FCR, FXD, TADS, Stored Coordinate Data, Terrain Points, ASE.
What pages, when accessed, enable the crew to change the ACQ (R6) source?
FCR, WPN, TSD, FLT, ENG
What is the default acquisition source?
If a crewmember CAQs on a FCR target icon what happens?
Their acquisition source is changed to T50 and the selected target icon location is the source for cueing and or slaving.
Name six available range sources in the Copilot/Gunner (CPG) crewstation?
Manual, Automatic, Laser, Tgt/Nav, Default, Radar (provided you have a NTS)
How does a crewmember select auto ranging?
Auto ranging is selected by selecting "A" on the KU followed by the enter button.
Where is the current range and range source displayed?
High Action Display (HAD), just to the left of the Field of Regard (FOR).
What is the range that is displayed on the WPN page at the MANRNG option?
MANRNG on the WPN page shows the last selected manual range by the crewmember in that crewstation or as selected from a previous mission.
When using the M-TADS, which switch on the LEFT handgrip of the TEDAC must be utilized for storing a point
STORE/UPDATE SWITCH, when pressed to the STORE position
Where do targets get stored?
In the next available position within the target file, numbered T01-T50 of the TSD/COORD files. If T01-T50 is full, then the next available slot between 100 - 950 will be used to store the target coordinate..
If storing a target using the M-TADS, what verification does the Copilot/Gunner (CPG) receive the target has been stored?
The stored target position will be displayed in the weapons inhibit area of the HAD for 4 seconds.
What are the range requirements in order to successfully complete an HMD store?
Range must be AUTO, Manual, or Default.
If storing a waypoint using the M-TADS, what page must the CPG have displayed in order to insure that a waypoint gets stored instead of a target?
The CPG must be on the TSD-POINT page with STO and TYPE: WPT selected.
When is the Laser Spot Tracker (LST) switch ignored?
When the Modernized Target Acquisition and Designation System (M-TADS) is not the selected sight.
How many targets is the Multi-Target Tracker (MTT) capable of tracking?
The MTT is capable if tracking one primary and five secondary targets.
How does the LST automatic search work?
The automatic scan begins 5° above and 30° to the right of the M-TADS LOS. It begins to sweep to the left until it reaches a point 30° to the left of the original M-TADS LOS point and then drops down 10° and sweeps back to the right. This will continue for two more scan bars and then move back to the start point and repeat the scan pattern. (Total of four bar scans, then restart)
Once the properly coded laser energy has been acquired, what will the M-TADS do?
Laser spot tracking hardware takes over turret control once a spot is acquired, when in either the manual or auto mode. (That is to say, the turret stops and tracks the energy until the LT is placed into the "OFF" position or the laser is turned off, or no longer emitting laser energy. At which time, the crewmember will re-gain manual control or the turret will go back into its scan. So, make sure the LT is turned off after locating the target area.)
How does the CPG regain control of the M-TADS LOS once the LST has locked onto a laser spot?
Placing the LT mode switch back into the O (Off) position
When a target is dropped or deleted during MTT operations, a message is generated for the crew. Where will the message be displayed and how long will it be displayed to the crew?
The message will be displayed in the HAD Weapons Inhibit section for four seconds.
How far can you offset once a primary track has been established?
The crewmember can offset to the edge of the current FOV.
What are the two optical choices the CPG has while using the TADS as a sight?
DTV or FLIR
What indication does the Copilot/Gunner (CPG) receive that the laser energy is spilling over/under the target?
A flashing Asterisk. Range values that change rapidly or are erratic will present a flashing asterisk indicating the ranges are not reliable.
What will precede the laser range when the laser is receiving good reflected energy?
A solid asterisk (*)
When using the laser to range or designate, what field of view should be used and why?
Narrow or Zoom, as they are the only two fields of view (FOV) that are boresighted.
The laser trigger is located on which TEDAC grip?
Right Hand Grip (RHG).
How often is it recommended that an internal boresight be conducted? Can it be conducted at anytime?
Twice every 2.5 hours of flight. Performed in flight or on the ground.
What must the CPG do upon completion of the DTV boresight in order to begin the FLIR boresight procedure?
Release the laser trigger.
What is the Copilot/Gunner (CPG) boresighting when performing an internal boresight?
DTV Narrow and Zoom FOV with the laser LOS -- FLIR Narrow and Zoom FOV parallel to the DTV
Is the Ground Override switch required to be placed in the override position in order for the Laser to fire during Internal Boresight procedures?
What element does a narrower radar scan width (field of view) improve?
Increased TIME ON TARGET scans
The AH-64D uses what type of radar system?
The AH-64D is a single antenna Pulse Wave Radar system.
During the periods between transmissions of a pulsed radar system, what is the radar doing?
Listening for the ECHO
What is the difference between a B-scope display and a C-scope display?
B-Scope provides information about targets in Azimuth and Range,
C-Scope provides information about targets in
What are the four major components that make up the Longbow Fire Control Radar (FCR)?
Mast Mounted Assembly (MMA)
Programmable Signal Processor (PSP)
Low Power Radio Frequency (LPRF) generator
Radar Frequency Interferometer (RFI) Processor
How is the MMA cooled?
Filtered ambient air
How are the other FCR components cooled?
The other three components that make up the FCR system are located in the External Forward Avionics Bay(s) (EFAB) and therefore are cooled by Environmental Control System (ECS) air.
What portion of the PSP is zeroized when the Master Zeroize switch is selected?
The Non-Volatile Memory portion of the General Purpose Module within the Programmable Signal Processor (PSP)
Can the crew initiate another Power-on Built-In Test (PBIT) if the FCR has timed-out under extremely cold conditions?
Yes, if 13 minutes have passed the WP will report FCR as not operational. An additional FCR power-up may then be started.
What four items should the crew ensure prior to initiating an FCR power-up sequence?
MMA must be unpinned; Verify the DMS UTIL boresight page blade position sensor boresight values are correct; EGI Alignment complete (Heading tape present); and FAB Temperature is <90 degrees F.
If a No Fire Zone (NF) and Priority Fire Zone (PF) overlap, which takes priority for target prioritization?
The No-Fire Zone prevails over the Priority-Fire Zone.
Which priority scheme resident within the PSP is selectable to emphasize ground targets?
Priority Scheme B
What are the six classifications used for target icons?
Track, Wheel, Air Defense Unit (Correlated/Uncorrelated), Unknown, Helicopter, and Flyer
Why do the target icons appear in full intensity?
It is a visual cue to the crew to indicate new or updated target information
Moving target symbols on the FCR page will go stale and dim after how many seconds?
What is the maximum number of targets that will be processed for display on the FCR page in the ground targeting mode?
FCR page will display a maximum of 16 targets while in the ground targeting mode.
When is a NTS target established?
A Next-To-Shoot will be established at the end of the first scan within a scanburst, as long as a target was found.
What four things will cause the NTS icon to change?
Selecting the NTS option at L1 on the FCR page; Sending a radar frequency handover (RFHO); Manually selecting another target icon as the NTS using the cursor; Engaging the NTS target with a RF Missile.
What happens to the NTS if the crew actions the weapon system prior to a scan?
The Fire Control Radar (FCR) will establish a NTS. The NTS will appear in a dashed format until the conclusion of the first scanburst, and then it will change to solid.
What does a broken (dashed) NTS icon indicate?
The armament ARM/SAFE switch is SAFE, or FCR is not the selected sight, or the crewmember has not actioned a weapon system. Any one of the three or a combination thereof will cause the NTS icon to go broken.
How can the pilot move the Fire Control Radar (FCR) centerline?
Acquisition source option...upon selection of the FCR as a sight, the FCR will automatically go to the Pilot station ACQ Source. OR
Using the left/right arrows on the FCR page. No manual tracker option in the back seat!
Which crewmember can make FCR centerline adjustments?
The crewmember that has the FCR as the selected sight.
What does it mean if the L/R arrows on the FCR page are barriered?
Arrows are barriered in the CPG crewstation when the FCR is the selected sight and the CPG has the slave function "ON".
How far does the FCR centerline move when the left or right arrow is selected?
FCR centerline will move left or right a number of degrees based on the currently selected scan size. (Far enough to cover an adjacent area of equal width)
Can the pilot always link the M-TADS to the FCR NTS?
Not if the CPG is using M-TADS as a sensor
When is the LINK function ignored?
When the M-TADS is being used as a sensor or is not turned on.
When the Crewmember has sight selected HMD.
When the FCR is not installed, or not powered on.
When a NTS target has not been established.
How can the crew delink the sights?
Select the LINK option again, reselect a sight, or change your ACQ source.
If the CPG has the M-TADS linked to the FCR NTS and the pilot sight selects the FCR, what is the CPG left with for the selected sight?
The CPG sight will default to M-TADS.
Which crewmember has control of the Target (TGT) option?
Either crewmember can store Fire Control Radar targets using the TGT option whether they have the FCR as the selected sight or not.
What will happen if the ALL option is selected from the FCR target page?
All FCR targets displayed on the FCR page (Max of 16) will be stored.
What two ways can the crew store FCR targets when the TGT option is selected?
Selecting the ALL option, or individually selecting the target icons using the cursor.
What happens if a crewmember cursor selects a target icon when the TGT option is selected?
That target position is stored, the status window is incremented to the next available file, and the "ALL" option is removed.
How does the crew store an FCR target from the TSD?
Either crewmember can Cursor Acquisition (CAQ) on an FCR target icon from the Tactical Situation Display (TSD) page and the target position is placed into the T50 Coordinate file. It will also automatically become the ACQuisition source, and display T50 at R6 of the MPD.
Who can send a RF Handover (RFHO)?
Only the crewmember that has the FCR as the selected sight can send an RFHO.
Is there a "timeout" for sending an RFHO?
No, RFHO's can be sent at anytime, no matter how old the scanned target data.
When an RFHO is sent from an aircraft with radar, which crewmember can receive the RFHO message?
Either crewmember on the receiving aircraft can accept (receive) the RFHO. The only requirement is that the aircraft receiving the RFHO be a primary member.
What does a "NAV DATA INVALID" message in the Sight Status area of the crewmembers High Action Display (HAD) indicate?
The FCR has been selected as the active sight and the RF handover data recently received has been detected as outside the optimum navigational parameters for weapons engagement. This is a SAFETY INHIBIT
When the RFHO message is accepted, what must a crewmember do to get the information to the Weapons Processor(s) (WP)?
A crewmember must Sight select the FCR to get the RFHO data to the WP
What FCR mode is displayed in a B-scope/Rectilinear format?
What symbols will be available when changing between GTM and RMAP?
Targeting data is maintained when operating/switching between GTM and RMAP.
What is the maximum range for an FCR stationary target?
Stationary target: 6 kilometers.
What does Terrain Profile Mode (TPM) provide?
An aid to navigation during terrain flight with reduced visibility.
What controls the scan size when operating in TPM?
Automatically controlled based on aircraft ground speed.
What is the groundspeed that will cause the coverage to go from the wide scan area to the narrow scan size?
Increasing groundspeed to greater than 55 knots.
What groundspeed will cause the coverage to go from Narrow to the Wide scan size?
Decreasing groundspeed to less than 45 knots
How many obstacle symbols can be displayed in the Terrain Profile Mode?
What classifications of target icons can be displayed in Air Targeting Mode (ATM)?
Helicopters, both hovering and in flight, fixed wing, and unknown.
What does the upper number in the Altitude Status window represent?
The upper altitude of radar coverage at the maximum radar range
What does the lower number in the Altitude Status window represent?
The lower altitude of radar coverage at the maximum radar range.
What is the symbol presented when a scan is conducted over the tail?
When the scan bar reaches the right perimeter of the currently selected scan size (except Wide scan) what happens if the crew is operating in the continuous scan mode?
The scan bar will reverse direction and continue the scan from right to left.
Where can the crew access information as to the status of their Sight Systems?
It will be displayed in the High Action Display (HAD) messages or on the Data Management System (DMS) or FAULT pages.
If the Fire Control Radar (FCR) is shut down automatically due to an overheat condition where will the message for this situation be displayed and what will the message be?
In the HAD sight status section, and the DMS page. Message will be: "FCR SHUTDOWN HOT"
What does the message FCR MTI/ATM DEGR indicate?
This is a partial failure of the FCR and any moving or airborne targets may not be processed. FCR operation in other modes is still possible
What does the message FCR STI FAIL indicate?
This is a partial failure of the FCR, and stationary targets will not be processed but moving targets will.
What must the crew do to use the Radar Frequency Interferometer (RFI) if the FCR is not powered up?
Ensure that the Mast Mounted Assembly (MMA) is pinned forward, before attempting to power-up the RFI, then power up the RFI.