 |
| |||
| helicopter application; helicopter operation | |||
| employing of aircraft (to monitor the sea, zur Meeresüberwachung); employing of helicopter (to monitor the sea, zur Meeresüberwachung) | |||
|
| |||
| helicopter application; helicopter operation | |||
| employing of aircraft (to monitor the sea, zur Meeresüberwachung); employing of helicopter (to monitor the sea, zur Meeresüberwachung) | |||