Service and Repair guidelines

AIR Avionics
(Butterfly, Garrecht, PowerFlarm) 

Read and fill out the Work Order that can be downloaded here.
Follow instructions as indicated.


Becker Avionics

Read and fill out the Repair Order that can be downloaded here.
Follow instructions as indicated.

E-mail (English & German):
E-mail (French):

For AR3201, AR4201, ATC4401, BXP6401, BXP6403 the minimum repair price is €195,00 and the maximum repair price is €595,00 (excluding tax, excluding shipping)

Dittel Avionik

E-mail KRT2: 
E-mail KTX2:

Read and fill out the Return for maintenance webpage: English version. Complete the form. 
After you have pressed the ‘Send’ button you will receive an e-mail with your details. Print this email and attach it to your parcel. Send the parcel with Return Form to: 

Dittel Avionik
c/o TQ-Systems GmbH 
Aviation Service 
Mühlstraße 2
D-82229  Seefeld 

TIP: read the FAQ-section here

f.u.n.k.e. AVIONICS
(formerly known as:
Funkwerk or Filser)

Read and fill out the Return for Maintenance webpage that can be viewed here (English…in Deutsch: hier).
Follow instructions as indicated.


f.u.n.k.e. AVIONICS GmbH 
Firmensitz, Vertrieb und Service Avionikgeräte 
Heinz-Strachowitz-Strasse 4 
D-86807  Buchloe 

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Replacement of backup batteries, IGC-resealing and other minor repairs can be done by us at our location. Generally this can be done within 2 days to 2 weeks. For other repairs the general processing time can range from 3 weeks up to 8 weeks in the peak season.

Please email us at to discuss the failure. You can send the parcel to our location and we’ll forward it to Slovenia as a batch of repairs, to lower shipping costs. Please always make sure to mark your instruments with your name and mention the serial numbers in any communication. Please include (print) any email correspondence and insert it with the package. Make sure to use registered/signature confirmation shipping, and don’t use enevelopes to ship valuable items.

Tost Flugzeuggerätebau

Being an EASA certified Mantenance Organisation, Tost can perform repair and service work on all Tost products. The focus is on the periodical release overhaul. Also wheels can be serviced, for example by the exchange of the ball bearings. The spare parts are available from stock, even for 30 year old wheels.

Tost Flugzeuggerätebau
Thalkirchner Strasse 62 Rgb 
D-80337  München 


Trig Avionics
  • Make a note of any error message or fault code if the unit displays one.
  • Report the error message including name, address, email-address, type of device, serial-number, software version, fault description, date of purchase, location of purchase and return address (if different) to us by email.
  • If your avionics are faulty then your dealer will arrange a repair to be carried out.
  • Please be aware there will be a repair charge if the two year warranty has expired.
  • If you are unsure how to proceed then you can contact Trig Support directly: 
    We can advise on accessing a repair. Please always consult your Approved Trig 
    dealer or Trig Support first before returning your avionics, as this can lead to 
    unnecessary shipping expenses when a fault may not be present.
  • Out of warranty shipping costs are the responsibility of the customer. Return shipping will be charged at cost.
Winter Instruments

Read and fill out the Repair Order that can be downloaded here.
Follow instructions as indicated.


Gebr. Winter GmbH & Co KG 
Hauptstrasse 25 
D-72417  Jungingen 

Shipping address for service and returns…

Please contact us prior to sending any parcels. We have two locations, our main hub is located at:

MillenAir Europe
Broekstraat 97
3840 Jesseren

or our secondary location is only for administrational purposes:

MillenAir Glider Supplies
De Schoof 9
7908NS Hoogeveen
The Netherlands
(Do not ship packages here without our approval)

We’d be happy to inform you which address will be quickest for your service, repair or warranty request.

Sometimes it could be quicker and cheaper to send the repair directly to the manufacturer.