| Acronym | Meaning |
![](file.png) | NATF | Naval Air Test Facility |
![](file.png) | NATL | National |
![](file.png) | NAV | Navigate |
![](file.png) | NAVAID | Navigation Aid |
![](file.png) | NAVDAD | Navigationally Derived Air Data |
![](file.png) | NAVPOOL | Navigation Parameter Common Pool |
![](file.png) | NAVSAT | Navigation Satellite |
![](file.png) | NB | Narrow Band |
![](file.png) | NB | Navigation Base |
![](file.png) | NB | Niobium |
![](file.png) | NB | Nitrogen Base |
![](file.png) | NB | No-Bias (Relay) |
![](file.png) | NBF | Neutral Buoyancy Facility |
![](file.png) | NBS | National Bureau Of Standards |
![](file.png) | NBT | Neutral Buoyancy Trainer |
![](file.png) | NC | National Course |
![](file.png) | NC | No Comment |
![](file.png) | NC | No Change |
![](file.png) | NC | Noise Criteria |
![](file.png) | NC | Normally Closed |
![](file.png) | NC | Normally Closed |
![](file.png) | NC | Numerical Control |
![](file.png) | NC1 | Nominal Correction 1 (Phasing Maneuver) |
![](file.png) | NCC | NASA Class Code |
![](file.png) | NCC | Network Control Center (GSFC) |
![](file.png) | NCC | Nominal Corrective Combination (Maneuver) |
![](file.png) | NCGS | Nuclear Criteria Group Secretary |
![](file.png) | NCI | Phasing Maneuver |
![](file.png) | NCIU | Network Common Interface Unit |
![](file.png) | NCR | No Calibration Required |
![](file.png) | NCR | Nonconformance/Failure Report |
![](file.png) | NCS | Nutation Control System |
![](file.png) | ND | NASA Document |
![](file.png) | ND | Neodymium |
![](file.png) | NDE | Nondestructive Evaluation |
![](file.png) | NDI | Nondestructive Inspection |
![](file.png) | NDT | Nondestructive Test |
![](file.png) | NDTF | Nondestructive Test Facility |
![](file.png) | NDTL | Nondestructive Test Laboratory |
![](file.png) | NEA | Noise Equivalent Angle |
![](file.png) | NEC | National Electrical Code |
![](file.png) | NEG | Negative |
![](file.png) | NEP | NNEP Normal Entry Point |
![](file.png) | NEP | Nominal Entry Point |
![](file.png) | NESC | NNESCNational Electrical Safety Code |
![](file.png) | NESR | NNESRNatural Environment Support Room |
![](file.png) | NET | NNET Network (N/W Preferred) |
![](file.png) | NET | PositivNet Positive Suction Pressure |
![](file.png) | NETCOM | NNETCOMNetwork Communications |
![](file.png) | NETWORK | IntNetwork Interface Processor |