LSA-MRA Frequently asked questions

Dear Pipistrel LSA aircraft owner,

According to the applicable ASTM standards, any repair, alteration or maintenance not covered by the Aircraft Maintenance Manual (AMM) requires authorization from the Original Equipment Manufacturer (OEM). Until now Pipistrel has authorized such repairs/alterations/maintenance with a Letter of Authorization (LOA), however, due to recent changes to the aforementioned standards, we’ve replaced it with a new document called LSA Major Repair and Alteration (LSA-MRA).

What is an LSA-MRA?

LSA-MRA is a document issued by Pipistrel that approves a certain repair, alteration or maintenance. It includes:

  1. detailed information about what’s needed to perform the requested repair/alteration/maintenance, who’s permitted to carry it out and how to perform it.
  2. advice on how to verify that the repair/alteration/maintenance has been performed correctly and test it if necessary.
  3. a statement from Pipistrel confirming that the aircraft will maintain compliance with the requirements of the applicable ASTM design and performance standards after the repair/alteration/maintenance has been performed.

When is an LSA-MRA needed?

Owners/Operators of Pipistrel LSA aircraft MUST request and attain an LSA-MRA BEFORE performing any major repairs, alterations or maintenance. LSA-MRA’s requested subsequent to the repair/alteration/maintenance being performed will NOT be issued.

What is a major repair/alteration/maintenance?

According to the applicable ASTM standards, an LSA-MRA is required for any repair, alteration or maintenance that is not covered by the maintenance manual (AMM) or any other instruction for continued airworthiness (ICA) (i.e. service bulletin, service information, etc.). Therefore, if instructions on how to perform the repair, alteration or maintenance are not included in the AMM or any ICA’s, OR if the repair isn’t specifically classified as minor in the AMM, then it’s be considered major and an LSA-MRA is required.

To request LSA MRA fill in the form below.


    All fields must be filled out. This data gives Pipistrel a clear idea of what aircraft the request applies to and its current status. The LSA-MRA eventually issued will only be valid for the aircraft configuration described in this section, so the information provided must be accurate.

    Note: the data collected will only be used for the purpose of LSA-MRAs and improving of safety of flight.


    This section can be filled out by the aircraft's owner or someone requesting an LSA-MRA on his or her behalf (requestor). All fields must be filled out.

    By filling out and submitting this form I, the aircraft owner, hereby confirm that the information given in this form is true, complete and accurate.

    I, the requestor, confirm that the information given in this form is true, complete and accurate. By filling out and submitting this form, I hereby confirm that I’m doing so on behalf of the aircraft owner and, thus, with his/her consent.


    Describe why the LSA-MRA is being requested. If it applies to a repair, describe the occurrence, describe the damage (size, type, dimensions), list all the components damaged and attach any/all photographs of the damage to the LSA MRA request form when submitting it. If applies to an alteration, include information about the reason for alteration and any/all part numbers that may be relevant. If applies to maintenance, describe the task and/or issue at hand and provide any relevant information.

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