Getting started
Glossary
The abbreviations used on the displays and in this manual.
| Term | Meaning |
|---|---|
| A/C | Aircraft. The fixed action button that toggles the ENG and FLT pages. |
| ACQ | Acquisition source: where your sight is cued to and slaves to. |
| ADU | Air defence unit, an FCR target class. |
| APU | Auxiliary power unit. A small turbine that powers the aircraft and starts the engines. |
| ASE | Aircraft survivability equipment: the warning receivers, chaff, flares and IR jammer. |
| ATM | Air targeting mode of the FCR. |
| BUCS | Back-up control system, the fly-by-wire back-up to the mechanical flight controls. |
| C-SCOPE | Radar targets shown on the helmet and VIDEO page. |
| COORD | Coordinate data page. |
| CPG | Copilot/gunner, in the front seat. |
| DMS | Data management system, the pages for points, routes and aircraft data. |
| DTV | Day TV, the TADS black and white camera. |
| DVO | Direct view optics, the TADS colour daylight optic. |
| FAB | Fixed action button: the labelled buttons on an MPD bezel (FCR, WPN, TSD, A/C, COM, VID, M). |
| FCR | Fire control radar, the Longbow radar above the rotor. |
| FLIR | Forward looking infrared: a thermal camera. Both the TADS and the PNVS have one. |
| FMC | Flight management computer: the stability augmentation and hold modes. |
| FOV | Field of view: W(ide), M(edium), N(arrow), Z(oom). |
| GTM | Ground targeting mode of the FCR. |
| HAD | High action display: the status lines at the bottom of the helmet and TADS symbology. |
| HDU | Helmet display unit, the monocle in front of your right eye. |
| HMD | Helmet mounted display; also the helmet sight. |
| IAFS | Internal auxiliary fuel system, a tank that replaces the 1,200 round cannon magazine. |
| IHADSS | Integrated helmet and display sight system. |
| KU | Keyboard unit, for entering data. |
| LMC | Linear motion compensator: keeps the TADS moving with a moving target. |
| LOAL / LOBL | Lock-on after launch / lock-on before launch. |
| LOS | Line of sight. |
| LRFD | Laser rangefinder/designator, in the TADS. |
| LST | Laser spot tracker, in the TADS. |
| MPD | Multipurpose display, the two square screens in each crew station. |
| Ng | Gas generator speed of an engine, percent. |
| Np | Power turbine speed of an engine, percent. |
| Nr | Main rotor speed, percent. |
| NTS | Next to shoot: the radar target the next radar-guided missile will be fired at. |
| NVS | Night vision system: whichever sensor gives you a night picture on the monocle. |
| PFZ / NFZ | Priority fire zone / no fire zone. |
| PLT | Pilot, in the rear seat. |
| PNVS | Pilot night vision sensor, the FLIR turret on top of the nose. |
| RF | Radio frequency: the radar-guided Hellfire (AGM-114L). |
| RLWR | Radar and laser warning receiver. |
| RMAP | Radar map mode of the FCR. |
| SAL | Semi-active laser: the laser-guided Hellfire (AGM-114K and others). |
| SFR | Specific fuel range. |
| TADS | Target acquisition designation sight, the large turret under the nose. |
| TGT | Turbine gas temperature, °C. |
| TPM | Terrain profile mode of the FCR. |
| TSD | Tactical situation display, the moving map page. |
| UFD | Up-front display, the small screen above the right MPD. |
| VAB | Variable action button: the 24 unlabelled buttons around each MPD. Named by side and number: T1–T6, B1–B6, L1–L6, R1–R6. |
| WAS | Weapon action switch: choosing which weapon your crew station fires. |
| WCA | Warnings, cautions and advisories. |