Remove before the flight is a safety warning often seen on removable aircraft and spacecraft components, typically in the form of a black ribbon trailing off the wing. The use of this type of warning sign is not recommended for single-stage aircraft. This is due to the increased likelihood of the black tag breaking off the trailing edge of the wing when the aircraft is buffeted during flight. The actual hazard posed by an unattached, break-free black tag is unknown since the only known incidents of aircraft crashing into an aircraft with a black tag are of very low altitude (i.e. low airspeeds).
Removable warning signs are used in many situations that involve the use of electrical parts or machinery; specifically, they are used on flying anything from aircraft and spacecraft to mobile homes and playground equipment. Because these protective covers can be removed and replaced the loss of them would not be financially or logistically important to the entity requiring protection. They serve as low-cost insurance against loss of airplane or spaceship. Once the protective cover has been removed the object falls into the “freeze zone” and all electrical parts, machinery or mobile home parts will stop working. Since there is no need to replace damaged mechanical parts, this would effectively free up the company from the necessity of buying new parts.
Removable warning signs can be effective in preventing aircraft and space ships from crashing when there is an imminent risk of a catastrophic failure of one or more vital system areas. The actual design of the warning sign is somewhat different depending on the type of hazard but the concept behind the design is the same. The warning sign is placed on the visible part of the spaceship or aircraft and is usually in the same location as the cockpit door. While the pilots and astronauts are busy handling and managing the various systems of the aircraft or ship a black ribbon or other sign is intentionally drawn across the visible warning area to make it very easy to see the sign and take action should an emergency situation or crisis occur.
It is important for the NASA Safety guidelines to be adhered to strictly. Once the black ribbon is displayed then any unsafe condition must be immediately removed or corrected. Once the warning sign is removed, the object is now safe and will continue to fly. This is why it is so important to be careful when removing objects from before flight that has the potential to pose a hazard to the astronauts or the crew. If an object is removed that is deemed to be a safety concern, the item must be returned immediately to its proper place on the aircraft or ship so that it can continue to fly.
When remove before flight these warning signs, it is always important to remove all safety features attached to the object. This includes any locking mechanism or other parts which could cause additional release should the lock be released by accident. In many cases, this can also include a feature that allows the item to self-destruct. The reason for this is that if there is a problem with one of these parts during the flight the aircraft or ship might crash and the black box data recorder could be completely destroyed if the lock is not released. The black box is a critical part of the mission and is typically housed in an area that cannot be reached by anyone except the Mission Control Room Team. Should this happen, the black box data recorder will automatically self-destruct.
Removing such warning signs is generally not difficult to do. However, there are some considerations you should think about before doing so. Flight experts recommend that objects are removed and checked before the flight. It is also a good idea to have them inspected before removal to make sure there are no obvious damage issues that could compromise the safety of the mission. The removal of these warning signs should only be undertaken by trained professionals and the remains must be carefully returned after removal.