According to the authorities, these online listings often include disclaimers stating that the buyer must “determine the airworthiness of the part” and that the seller “assumes no responsibility.” Such statements are a clear red flag that the part may not originate from a certified source and may not be approved for installation on an aircraft.
Aircraft Loses Airworthiness Without Proper Documentation
If a part is installed without the required documentation—such as a valid EASA Form 1 or an equivalent certificate—the aircraft automatically loses its airworthiness. The responsibility lies not only with the aircraft owner but also with the person or maintenance organisation that installs the part.
Violations of this nature can result in substantial fines. Beyond financial penalties, installing unapproved parts poses a serious threat to flight safety, which is the primary reason authorities strongly advise against purchasing components from unverified online sources.
Recommendations for Pilots and Aircraft Owners
Both the Czech CAA and the FAA recommend exercising extreme caution with parts offered outside of approved distribution channels. Operators should always verify the following:
-
The part’s origin and history,
-
Valid documentation and certification,
-
That the installation is performed by authorised personnel.
ADVERTISEMENT
A cheaper component from an unverified source can lead to much higher costs in the long run and, in the worst-case scenario, endanger lives.
Sources: Czech CAA, FAA
