Memory is not a procedure.
RB4 is a mechanical interlock for remove-before-flight covers. The cockpit flag closes only when every cover has been removed from the aircraft and every pin is in the detection box.
MORE INFOCover removal still relies on a visual check
Pitot covers, static plugs, engine intake covers and gear pins protect the aircraft on the ground, and each one has to be removed before the aircraft moves. Today that check relies on the walk-around and on the crew's memory.
A covered pitot tube or static port gives unreliable air data during takeoff and landing. An engine cover left in place can lead to damage and unscheduled maintenance.
Three steps before every flight
Remove
Each cover is attached to a green slave pin. Remove the cover from the aircraft and keep its pin.
Dock
Insert each pin into the detection box. The box releases the red master pin once all slave pins are in place.
Close
Take the master pin to the cockpit and clip it into the flag. The REMOVE BEFORE FLIGHT banner folds away and the flag closes.
A fully mechanical system
RB4 is independent of the aircraft's systems and works without a power supply, wiring or software.
Other features
→ Designed for 1,000 full cycles without maintenance.
→ Each detection box takes up to 8 covers. An extender pin links a second box.
→ Each pin fits only its own slot, so the sequence cannot be bypassed.
→ The slave pins clip onto existing covers.
→ The flag mounts in the cockpit with dual-lock fasteners and stays closed in turbulence.
→ Phosphorescent banner, readable in a dark hangar.
→ Matte, jet-grade finishes. Made in Italy.
The same procedure on every aircraft
Operators & flight departments
The same check on every aircraft, regardless of who is on duty.
MROs, FBOs & ground handling
Covers are often fitted by people who will not fly the aircraft. With RB4, the pins show at handover which covers are still fitted.
Flight schools & aero clubs
Students learn a consistent pre-flight routine from their first flight.
OEMs & distributors
RB4 can be delivered with the aircraft or offered as a catalog item.
Programs for fleets and manufacturers
For fleets, flight schools and production lines, we define volume and OEM programs around each operation's requirements.
CONTACT OUR TEAMDeveloped by Magic Engineering
RB4 is designed and built in Italy by Magic Engineering, an engineering company with an ISO 9001 certified quality system. It has been field-tested with Aero Club Palermo and is patent pending in the US and EU.
Frequently asked questions
RB4 is ground equipment. It is not connected to the aircraft's systems; the flag is mounted in the cockpit with dual-lock fasteners.
Yes. The slave pins clip onto the fabric streamers of standard remove-before-flight covers.
A second detection box can be added with the pin extender. The interlock then covers both boxes.
RB4 is entirely mechanical and needs no power source.
RB4 is designed for 1,000 full cycles without maintenance. At two flights a week, that corresponds to roughly ten years of use.
Get more info
Send us your details and we will reach out to provide you with additional information by email.
MAGIC ENGINEERING S.R.L.
C.da Margi Soprano snc, 90047 Partinico (PA)
Italy VAT Number/Reg. No: IT06830930829
R.E.A. PA-419009
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