| Student pilots learn aerobatics, formation, night and instrument flying and cross-country navigation. |
| Studying for his student pilot licence, he got his first lessons in meteorology, navigation, and airmanship. |
| It was a misty night, all navigation lights were switched off and radio silence was observed. |
| This rocky terrain is covered with deep wadis that make navigation difficult. |
| The Pentagon plans to use them to improve the aim of missiles and provide better navigation for warplanes and ground troops. |
| They had no perceptible impact on German opinion, though the leaflet raids gave aircrew some essential training in night navigation. |
