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13M HIMARS NEWEST STUDY GUIDE UPDATED ACTUAL
EXAM 2025 QUESTIONS AND CORRECT ANSWERS
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The carrier's alternator charges what? - CORRECT ANSWER >>> The carrier and launcher batteries This warning will be displayed if a failure occurs which prohibits an active fire mission from completing, or from being performed if none is active. - CORRECT ANSWER >>> Critical Failure What is the maximum ground slope for the firing of all munitions? **- CORRECT ANSWER
** 89 mils The RMU stores system ____ and database information. - CORRECT ANSWER >>> Software When vehicle power switch is set to on and the universal gunner's display unit is off, the fire control system volt gauge should read a minimum of : - CORRECT ANSWER >>> 24 VDC What is a "dud fuse"? - CORRECT ANSWER >>> When the rocket fuses are tested by the FCS and fuse fails the test (Safety care) The section chief must record what data concerning the RRPR (M28A1) ammunition for the LFX?
- CORRECT ANSWER >>> Rocket Serial number and Lot number A "Hang fire" occurs when - CORRECT ANSWER >>> An attempt was made to fire the rocket and the FCS did not detect squib current
There are ______ classes of built-in-test Diagnostics? - CORRECT ANSWER >>> 4 Power on self test Background bit and event verification test Commanded built in test Launcher interface unit LRU status How many and what are the parts of the Hydraulic control system? **- CORRECT ANSWER
** 12 Hydraulic Pump Speed-Increasing Gearbox hydraulic Reservoir hydraulic fluid Heat Exchanger Distribution Manifold Azimuth Drive Motor Hydraulic Swivel Elevation Manifold Elevation Actuator Reload Manifold Boom Motor Hoist Motor Normal operating vehicle air pressure should be - CORRECT ANSWER >>> 75 - 120 psi The hydraulic reservoir stores approximately ____ of hydraulic fluid for system operation - CORRECT ANSWER >>> 4.1 gal.
On-board munitions should remain connected to the umbilical cables during C130 air transport.
- CORRECT ANSWER >>> False The on the M142 monitors the status of the jury strut limit switches and rocket pod hold down latch limit switches to verify that they are in the proper position for safe operation. - CORRECT ANSWER >>> HULIU Referring to zone 2 (GPS Status) on the FCP display an outline box indicates that GPS keys are____ and a solid box indicates that GPS keys are____? - CORRECT ANSWER >>> Not Loaded, Loaded The technical manual for the HIMARS is? - CORRECT ANSWER >>> TM 9- 1055 - 1646 - 13&P The UPNU reaction time to achieve the necessary accuracy is ____ in normal alignment mode. - CORRECT ANSWER >>> 5 minutes When operating the vehicle in the emergency mode (CTIS), it's limited to how many minutes and mph? - CORRECT ANSWER >>> 10 minutes, 5 mph The MHC should normally be moved in the opposite direction to come out of an overload condition - CORRECT ANSWER >>> TRUE For all C-130 models (except for J-model) the GPS repeater antenna must be placed between positions ____ and ____ on the overhead middle brace running down the length of the aircraft. - CORRECT ANSWER >>> FS 437 and FS 457 The blue color coded coax going the forward GPS Repeater Antenna must be connected to JPADS GPS RTS Antenna Control Unit ____. - CORRECT ANSWER >>> J
While conducting hot panel operations it is recommended that the FCS remains powered on if the flight is to last less than approximately ____. - CORRECT ANSWER >>> 1 hour The POSNAV indicator will change from "AIR" back to "NAV" when sufficient forward movement odometer pulses are sensed. Slow vehicle movement will cause odometer pulses to be erratic. Have the driver increase the vehicle's speed to ____ to correct this problem. - CORRECT ANSWER >>> 5 - 10 MPH Lowering the SAFE/ARM switch after raising the FIRE SWITCH before the weapon fires on GMLRS/ATACMS will render the weapon unserviceable. TRUE OR FALSE. **- CORRECT ANSWER
** TRUE The boom controller has safety features to stop the LDS. LM movement can be stopped during BC operations by pressing ____ buttons at the same time. - CORRECT ANSWER >>> 2 What is the maximum distance allowable to "drag" a RP/GMLA when conducting reload from the ground? - CORRECT ANSWER >>> Half the width of the hoist and pulley assembly Do not reposition the hoist pulley housing unless the hoist hook and pulley assembly is lowered at least ____. - CORRECT ANSWER >>> 1/3 meter During Non-GPS aided operations, zero velocity updates are performed when Universal Position Navigation Unit error tolerances approach undesirable levels. The UPNU requires the operator to stop the vehicle for approximately ____ for error tolerances to be reduced. - CORRECT ANSWER >>> 9 minutes and 30 secs What comprises the Universal Fire Control System (UFCS) are? - CORRECT ANSWER >>> 9 components UGDU
There are _________ types of failures detected by the UFCS. - CORRECT ANSWER >>> 3 NON CRITICAL NON CRITICAL - FURTHER ACTION REQUIRED CRITICAL POSITIONING ERROR - USING GPS means the startup grid was how much different than GPS? - CORRECT ANSWER >>> 50 - 5000 meters The master power switches on both vehicles must be turned ____ before connecting NATO power cable when starting a disabled vehicle. - CORRECT ANSWER >>> OFF For safety all launchers must be parked within ±_____ mils of the FCS command parking heading. - CORRECT ANSWER >>> 100 A Zero Velocity Update (ZUPT) takes ____ to complete. - CORRECT ANSWER >>> 40 seconds On-board munitions should remain connected to the umbilical cables during C130 air transport. TRUE OR FALSE - CORRECT ANSWER >>> FALSE When loading GPS Crypto Keys into the launcher. Red and Black GPS Crypto Keys can be mixed on the launcher. TRUE OR FALSE - CORRECT ANSWER >>> FALSE In the METCM Database menu, how many total lines of METCM are provided for the launcher to perform technical trajectory calculations? - CORRECT ANSWER >>> 37 (0-36) What is the make of the engine (M1084A1P2/RSV/HIMARS), and what is the horsepower rating?
- CORRECT ANSWER >>> C-7 Caterpillar, 330 mph
What is the vehicle classification number for the HIMARS? - CORRECT ANSWER >>> 17 The HIMARS crew should be ready to power on the FCS when the aircrew calls out ____ minutes warning during air transport procedures. - CORRECT ANSWER >>> 45 When conducting annual PMCS, how many personnel, MOS 94P, are required to perform this procedure? - CORRECT ANSWER >>> 0 What are the emergency fuels listed for the XM1140? - CORRECT ANSWER >>> Commercial burner fuel oil, grade O-2 and Kerosene Which of the following procedure(s) is required during annual PMCS? A. Grounding Strap Maintenance B. A & C C. Boom Extension Actuator Lubrication D. Speed Increasing Gearbox Lubrication - CORRECT ANSWER >>> B The ___ ____serves as the interface between the FCS and the on board munitions by performing the various functions that are associated with each weapon. **- CORRECT ANSWER
** UWIU When reloading with a M142, park ________ to the side and ______ in front of the RP. - CORRECT ANSWER >>> 6 - 12 inches, 5 feet The RMU stores the launcher's operational ___________. - CORRECT ANSWER >>> Software
What is the minimum distance from the HIMARS launcher that you must be while the LDS is running? - CORRECT ANSWER >>> 4 meters on side, 6 meters to rear When in CBIT operations which LRU status selection is entered to perform an LPA Cable Test? - CORRECT ANSWER >>> Universal Weapons Interface Unit When operating the M142 launcher in the GPS Aided Mode the location accuracy will always remain within an accuracy of _______ meters, as long as GPS data is available? - CORRECT ANSWER >>> 10 The operator has the capability to manually enter fire mission data into the FM buffer by first selecting the ____________. - CORRECT ANSWER >>> Fire Mission DB PFK Background bit failures are listed in the ______________ log? **- CORRECT ANSWER
** Activity What is a HANGFIRE? - CORRECT ANSWER >>> Squib was detected, but did not fire Which type of MET is used during Live Fire? - CORRECT ANSWER >>> METCM When as a section chief do you have to measure masking data, and direct the input into the FCS? - CORRECT ANSWER >>> The mask is within 2000 meters and over 100 mils site to crest When conducting soft zero operations, what will the azimuth and elevation resolver read out display? - CORRECT ANSWER >>> + or - 7.0 , + or - 3.2 Mils What is the fuel tank capacity of the M142? - CORRECT ANSWER >>> 56
MET STATION ALTITUDE is displayed on the UGDU in what unit of measure? - CORRECT ANSWER >>> Decameters Cable Assembly, W18 is part of the expendable and durable items list. TRUE OR FALSE. - CORRECT ANSWER >>> FALSE While conducting a fire mission, the slope read out should be? - CORRECT ANSWER >>> 0 - 89 mils A position variant of _____ when loading GPS keys after Air transport will display the following prompt (POSITION VIOLATION RECYCLE AND UPDATE SYSTEM PARAMETERS). - CORRECT ANSWER >>> 5 Kilometers Can Standard MET be used to develop check data? - CORRECT ANSWER >>> NO Check launchers will use the _____________ data in developing Safety T data. - CORRECT ANSWER >>> Command What is the J-Code for a M30 Guided Rocket? - CORRECT ANSWER >>> JED The launcher section chief selects the HA—an area in which to hide the launcher while awaiting a fire mission. The hide area should be covered and concealed, and close to the designated FP (normally not less than _______ meter and not more than ______ meters away). A launcher in the HA must be able to communicate with the BOC. The HA may be on a road leading to the FP to reduce the ground signature and to speed response time. - CORRECT ANSWER >>> 20, 100 The _______ on the M142 monitors the status of the jury strut limit switches and rocket pod hold down latch limit switches to verify that they are in the proper position for safe operation. - CORRECT ANSWER >>> HULIU
If operating without GPS (Non-aided mode), it is necessary to access SYSTEM PARAMETERS and manually update the UPNU location every ___________ km. - CORRECT ANSWER >>> 5 What Are The Four CTIS Operation Modes? - CORRECT ANSWER >>> Highway Cross Country Sand Emergency/Run-flat What is the Vehicle Class Number for the XM1140? - CORRECT ANSWER >>> 17 What are the four sections of an ATACMS? - CORRECT ANSWER >>> 1. Guidance and Control Section
- Warhead Section
- Propulsion Section
- Control Section The M77 submunition can penetrate up to ___ of armor. Its steel case fragments and produces antipersonnel effects within a radius of ___. - CORRECT ANSWER >>> 4 inches, 4 meters According to ATP 3-09.60, there are several methods for moving an element in a tactical configuration. Which of the below is one of these? - CORRECT ANSWER >>> Close Column Where the enemy counter-fire threat is minimal, launchers may operate from ____ hide areas. - CORRECT ANSWER >>> Mutually Supporting For the HIMARS platoon, the keys to survivability are ________and _______ defense. - CORRECT ANSWER >>> Avoidance of Detection, Passive
If a munition malfunctions, the section chief must record the date, time, prompts displayed and as necessary, and a narrative explaining the events surrounding the malfunction on the _____. - CORRECT ANSWER >>> DA FORM 7233 The M30 GMLRS rocket is not GPS dependent and will achieve a high level of accuracy in the non-aided mode. - CORRECT ANSWER >>> True Stacking pins at the top of four corners of the frame permit stacking of the launch pods. The pods can be stacked two high during transport and ____ high during storage. - CORRECT ANSWER >>> 4 What is the approximate warhead detonation above the target for a proximity fuze mode for the M31? - CORRECT ANSWER >>> 7 meters ATP 3-09.60 names three of the five requirements for accurate predicted fire which can be ensured by a HIMARS unit. Which is not one of these three? A. Accurate Target Size and Location B. Accurate Firing Unit Location C. Accurate Meteorological Information D. Accurate Computational Procedures - CORRECT ANSWER >>> Accurate Computational Procedures During Cold Weather Operations, when FCS batteries are severely degraded, and the temperature is between 0 and 40 degrees F, the engine should be run at high-idle speed for a minimum of ____. - CORRECT ANSWER >>> 30 minutes CTIS overspeed indicator illuminates under what conditions? - CORRECT ANSWER >>> Speed exceeds the specified limit for the selected mode
EMERGENCY - CORRECT ANSWER >>> 5 MPH, 10 MINUTES, 24 PSI
The power source for the M142 is made up of two universal fire control system batteries paralleled to four vehicle batteries. - CORRECT ANSWER >>> TRUE What is the fuel tank capacity and range of the M142? - CORRECT ANSWER >>> 56 gal, 300 Miles When the vehicle has been properly positioned on the firing point, the driver: - CORRECT ANSWER >>> Places the vehicle transmission in neutral Sets the parking brake When vehicle power switch is set to on and the universal gunner's display unit is off, the fire control system volt gauge should read a minimum of : - CORRECT ANSWER >>> 24 VDC The M142 launcher is a variant of the Fielded Army Family of Medium Tactical Vehicles. TRUE OR FALSE. - CORRECT ANSWER >>> TRUE When a caution or warning message is displayed on the interactive electronic technical manual (IETM), in order to continue, you must click the "ok" button. TRUE OR FALSE. - CORRECT ANSWER >>> TRUE Smoking is prohibited within ___________ meters of rocket pod (RP) or guided missile launch assembly (GMLA) loading area - CORRECT ANSWER >>> 50 FEET A "Misfire" occurs when: - CORRECT ANSWER >>> An attempt was made to fire the rocket and the FCS did not detect and squib current
A "Hang fire" occurs when: - CORRECT ANSWER >>> An attempt was made to fire the rocket and squib current to the rocket was detected The inside windshield and side windows are fitted with ___________ for protection from the flash of rocket/missile firings. - CORRECT ANSWER >>> Flash Protector Curtains In which publication is the performance data for the XM1140 located? **- CORRECT ANSWER
** TM 9- 2300 - 310 - 14&P What is the length of the XM1140? - CORRECT ANSWER >>> 25 FEET 6 IN What is the height of the M142 with the launch module stowed? - CORRECT ANSWER >>> 10 FEET 3 IN What is the weight of a loaded guided missile launch assembly? **- CORRECT ANSWER ** 5,111 lbs How many sub-munitions are contained in the M30 Guided MLRS rocket? - CORRECT ANSWER >>> 404 During reload operations, pressing the foot brake and accelerator pedal have no effect on reload operations. - CORRECT ANSWER >>> TRUE What munition combination is the M142 capable of carrying? - CORRECT ANSWER >>> 6 ROCKETS OR 1 GMLA/ATACMS During recovery from C-130 air transport the vehicle may be driven with tires deflated when: - CORRECT ANSWER >>> In first gear and up to 500 meters
Non-Critical failures have no impact on the ability to conduct firing **- CORRECT ANSWER
** TRUE A reload point must allow the M142 to ________ and ________ without re-parking. **-
** An attempt was made to fire the rocket and squib current to the rocket was detected The inside windshield and side windows are fitted with ___________ for protection from the flash of rocket/missile firings. - CORRECT ANSWER >>> Flash Protector Curtains In which publication is the performance data for the XM1140 located? - CORRECT ANSWER >>> TM 9- 2300 - 310 - 14&P What is the length of the XM1140? - CORRECT ANSWER >>> 25 FEET 6 IN What is the height of the M142 with the launch module stowed? - CORRECT ANSWER >>> 10 FEET 3 IN What is the weight of a loaded guided missile launch assembly? - CORRECT ANSWER >>> 5,111 lbs How many sub-munitions are contained in the M30 Guided MLRS rocket? - CORRECT ANSWER >>> 404 During reload operations, pressing the foot brake and accelerator pedal have no effect on reload operations. - CORRECT ANSWER >>> TRUE What munition combination is the M142 capable of carrying? - CORRECT ANSWER >>> 6 ROCKETS OR 1 GMLA/ATACMS During recovery from C-130 air transport the vehicle may be driven with tires deflated when: - CORRECT ANSWER >>> In first gear and up to 500 meters Non-Critical failures have no impact on the ability to conduct firing - CORRECT ANSWER >>> TRUE A reload point must allow the M142 to ________ and ________ without re-parking. - CORRECT ANSWER >>> Download and Upload Re-align and Calibrate Remain conceal and covered Are you required to use eye protection when caging the brakes on the XM1140? - CORRECT ANSWER >>> YES When checking the fire extinguishers on the XM1140, the pressure gage needle should be in the green band and indicate approximately, ____ psi. - CORRECT ANSWER >>> 195 The M142 is NMC if more than _______of hydraulic fluid drains from the air side bleed valve. - CORRECT ANSWER >>> 1 CUP What unit measure does the differential pressure gauge read in **- CORRECT ANSWER
** INCHES OF WATER What is the driver's duty during MASKING operations? - CORRECT ANSWER >>> PULL SECURITY How many ground guides does it take to move the M142 in the motor pool? - CORRECT ANSWER >>> 2 Who is authorized to call a check fire for an unsafe act? - CORRECT ANSWER >>> EVERYONE
How often is it required for a launcher crew to certify/qualify? - CORRECT ANSWER >>> SEMI- ANNUALLY Engine Oil Pressure is considered low if it is below ____ PSI. - CORRECT ANSWER >>> 15 The vehicle is not ready when the water temperature gage reads above ____ degrees - CORRECT ANSWER >>> 250 The vehicle is not ready if the VOLTS gauge indicator does not indicate - VOLTS. - CORRECT ANSWER >>> 26 - 30 The air dryer should discharge when the system reaches approximately ___ PSI. - CORRECT ANSWER >>> 120 The secondary fuel filter is not ready if a class ___ fuel leak is present. **- CORRECT ANSWER
** I When checking the underside of the vehicle, which component would not be checked for obvious damage? A. leaf springs B. frame rails D. hydraulic manifold E. Air hoses and fittings - CORRECT ANSWER >>> hydraulic manifold Play or looseness in the serpentine belt greater than ____ renders the vehicle not ready. - CORRECT ANSWER >>> 1/2 IN
