| Acronym | Meaning |
 | MWB | MMWB Master Work Book |
| MWG | MMWG Maintenance Analyzer Working Group |
| MWP | MMWP Maximum Working Pressure |
| MWPR | MMWPRMonthly Work Package Report |
| MWR | MMWR Mean Width Ratio |
| MWV | Mmwv Maximum Working Voltage |
| MX | Mmx Multiplex |
| MY | MMY Man Year |
| MYTA | MMYTAMaintainability Task Analyses |
| MYVAL | MMYVALMaintainability Evaluation |
| MZFW | MMZFWMaximum Zero Fuel Weight |
| N | Neutrons |
| N | Newton |
| N | North |
| N&G | Navigation And Guidance (G&N Preferred) |
| N/0 | Normally Open |
| N/A | Next Assembly |
| N/A | Not Applicable |
| N/B | Narrow Band |
| N/C | Normally Closed |
| N/C | Nose Cone |
| N/C | Not Critical |
| N/C | Numerical Control |
| N/D | Need Date |
| N/P | Not Provided |
| N/W | Network |
| N02 | Nitrogen Dioxide |
| N2 | Nitrogen |
| N2 | Nitrogen |
| N204 | Nitrogen Tetroxide |
| N2H4 | Hydrazine |
| N2HO4 | Nitrogen Peroxide |
| N2O4 | Nitrogen Tetroxide |
| NA | Next Action |
| NA | Not Applicable |
| NAAL | North American Aerodynamic Laboratory (Wind Tunnel) |
| NAC | Nacelle |
| NAEC | Naval Air Engineering Center |
| NAM | National Association Of Manufacturers |
| NAP | Navigation Analysis Program |
| NAR | Numerical Analysis Research |
| NARS | National Archives And Record Services |
| NAS | National Academy Of Sciences |
| NAS | National Aircraft Standard |
| NAS | Naval Air Station |
| NASA | National Aeronautics And Space Administration |
| NASA | National Aeronautics And Space Administration |
| NASCOM | NASA Communications (Network) |
| NASCOM | NASA Communications Network |
| NASTRAN | NASA Structural Analysis |
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