However, each ELT is specifically designed for each aircraft, so it cannot be tampered with. You also cannot turn off the black box, as it runs throughout the flight, recording every 30 to 60 seconds.
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Pilots must be able to turn off transponders, and sometimes must turn them off for safety reasons.
It's also worth noting that if the transponder is switched off you generally only lose two pieces of information: the flight identification (mode A & mode S data) and altitude (mode C data). Primary radar will still paint a target (albeit unidentified) as long as the aircraft is within radar range.
Pilots can easily make a misstep by turning off their transponder, and there are very limited circumstances which allow a pilot to do so.” Civilian aircraft can turn off their ADS-B Out only if specifically instructed to do so by ATC, or if they are the non-lead aircraft in a formation flight, Duke said.
During inclement weather, the autopilot is normally used. In cases of significant turbulence, a pilot may disengage the autopilot to help ease the vertical loads on the airplane by reducing the corrective control inputs. All takeoffs and most landing are done manually.
As mentioned, losing radio communications in a modern airliner is usually the result of an improper frequency change, inattention, or the malfunction of a single radio. If a radio fails and ATC cannot reach an aircraft, they will attempt to reach the pilots on the guard frequency, which is 121.5 in the United States.
VFR flight plans filed with AFSS (Automated Flight Service Station) are not passed to ATC. They remain strictly within the AFSS network for search and rescue purposes only. When you request VFR flight following outside the local approach control area, the controller will normally enter a mini-flight plan in the system.
No keys for commercial jetsThe fact that they operate from secure airports is enough to mean that they have not been designed this way. When left at a gate, doors may be marked or taped so that crew will know if someone attempted to access the cabin, but they will not be locked.
What is the TSA Known Crewmember program? The Known Crewmember program (often abbreviated KCM) allows select airline pilots and flight attendants to enter the sterile area of the airport without going through the standard security screening process. The current iteration of the KCM program has been around since 2011.