Acronyms
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N
| Acronym | Meaning | Source |
| N | North, North Latitude | AIS |
| N1 | Gas Generator Speed | |
| N2 | Second Stage Turbine Speed | |
| NAA | National Airworthiness Authority (for a country other than Australia) | CAR 1998 |
| NAD | Non-acqueous Developer | |
| NAIPS | National aeronautical information processing system | AIP |
| NANDTB | National Aerospace Non-destructive Testing Board | |
| NANU | Notice Advisory to NavStar Users | |
| NAP | Noise Abatement Procedures | AIS |
| NAS | National Airspace System | |
| NASC | National AIS System Centre | AIS |
| NASIG | National Airspace System Implementation Group | |
| NAT | NAVAID Training | AIS |
| NAV | Navigation | AIS |
| NAVAID | Navigation Aid | AIS |
| NAWD | Non-acqueous Wet Developer | |
| NB | Northbound | AIS |
| NBFR | Not Before | AIS |
| NC | No Change | AIS |
| NDB | Non-directional Radio Beacon | AIS |
| NDI | Non-destructive inspection | CAR 1988 |
| NDT | Non-destructive testing | CAR 1988 |
| NE | Northeast | AIS |
| NEG | Negative, No. Permission not granted or, That is not correct | AIS |
| NFRM | Notice of Final Rule Making | CASA |
| NG | Gas Generator Speed | |
| NGT | Night | AIS |
| NIL | None | AIS |
| NM | Nautical Mile | AIS |
| NML | Normal | AIS |
| NNE | North North-East | AIS |
| NNW | North North-West | AIS |
| NOC | National Operations Centre (Airservices Australia) | |
| NOF | International NOTAM Office | AIS |
| NOSIG | No Significant Change | AIS |
| NOTAM | Notice To Airmen | AIP |
| NOV | November | AIS |
| NOZ | Normal Operating Zone | AIS |
| NP | Propeller Speed | |
| NPA | Non-precision approach (procedures at aerodromes) | AIS |
| NPC | Notice of proposed change (consultation for amendment to a MOS) | CAR 1998 |
| NPRM | Notice of proposed rule making | CASA |
| NPV | Net present Value | |
| NSC | Nil Significant Cloud | AIS |
| NTA | No TAF Amendment | AIS |
| NTL | National | AIS |
| NTS | Negative Torque Sensing System | |
| NTSB | National Transportation Safety Board (of the USA) | |
| NTZ | No-transgression zone | AIP/ICAO |
| NVD | Night Vision Device | |
| NVED | Night Vision Enhancement Devices | |
| NVET | National vocational education and training | CASR Part 66 |
| NVFR | Night Visual Flight Rules | |
| NVG | Night Vision Goggles (by the MIL) | AIS |
| NVIS | Night Vision Imaging Systems | |
| NW | North-West | AIS |
| NXT | Next | AIS |
| NZ | New Zealand | |
| NZ CAA | New Zealand Civil Aviation Authority | |
| NZS | New Zealand Standard |