Many aircraft have a similar issue regarding speed control, like the 737NG, depending on weight you can maintain 160kts or a little higher may be required. As all operators are environmentalists and noise pollution specialists (citizens under flightpath) would prefer us pilots to fly with gear up until 4/5nm, then a slightly higher speed is better than the alternative option.
In regards transponder and ADS-B:
- ELS (Elementary or Basic Surveillance Functionality):
- Aircraft identity unique
- Altitude reporting in 25ft increments
- Transponder capability report
- Flight status (air/ground)
- SI code
- EHS (Enhanced Surveillance)
- FMS Selected Altitude
- Turn Information: Roll Angle, True Track Angle, Track Angle Rate
- Ground Speed
- Magnetic Heading
- Achieved Indicated Air Speed (IAS)/Mach (not selected/commanded)
- Barometric Climb Rate
- TCAS RA Information