...again: do you really need to convert it, or can you just have it validated (recognized) and you fly on the basis of the foreign (US) license? Since you know your way around european airspace and such, it would be much cheaper!?
Here is the content of the form General Recognition of "Foreign Certificates or Licenses" by the Luftfahrtbundesamt (german CAA) - look at paragraph no 4.
Maybe you can find something similar in Poland?
http://www.lba.de/cln_009/nn_69148/S...L4-95-engl.pdf
General Recognition of Foreign
Certificates or Licences
(NfL II - 4/95)
1. Certificates or Licences issued by an EG Member State
Every holder of a private pilot's Iicence issued by an EG member state may pilot aircraft
registered in the Federal Republic of Germany. The recognition is restricted to the rights of
a private pilot's Iicence, aircraft endorsed thereon with a certificate for a minimum flight crew
consisting of one pilot, and to VFR flights by day.
The recognition is informal and not limited in time. At present - in addition to Germany - the
following states are members of the EG:
Austria Italy
Belgium Luxemburg
Denmark Netherlands
Finland Portugal
France Sweden
Greece Spain
Ireland United Kingdom
Note
The recognition does not include Iicences for pilots of sports aircraft (see GEN 2-5).
2. Glider Pilots' Licences
Valid glider piIots Iicences issued in accordance with the ICAO Standards, the holders of
which can prove at least 30 hours overall glider flight experience, are recognized for non-
commercial and non-professional activities with gliders registered in the Federal Republic of
Germany, pursuant to § 28 para 2 LuftVZO.
The recognition is informal and not limited in time and does not include flight instructor
qualifications.
3. Certificates or Licences lssued by Switzerland
3.1 The reciprocal General Recognition comprises valid
Swiss licences for
- private pilots
- private helicopter pilots
- powered glider pilots
- glider pilots *
- balloon pilots *
German licences for
- private pilots
- private helicopter pilots
- powered glider piIots
- glider pilots
- free balloon pilots
3.2 The recognition is informal and not limited in time; it extends only to the use of
aircraft registered in Switzerland or the Federal Republic of Germany and is limited to flights
over the territories of these both states.
3.3 The General Recognition does not include
- licences for type familiarization training and flight instructor licences,
- Swiss licences the holders of which have their permanent residence in the Federal
Republic of Germany or Austria,
- German licences the holders of which have their permanent residence in
Switzerland.
Note
For flights with aircraft registered in the Federal Republic of Germany over the territories of
the Federal Republic of Germany, holders of Swiss glider pilot Iicences or free balloon pilot
licences, unless also in possession of a valid pilot's licence for powered aircraft, shall carry
a medical certification issued within the previous two years by a medical expert or a
designated medical examiner.
Holders of Swiss glider pilot licences or free balloon licences are permitted to perform
occasional flights, e. g. enroute flights, competition flights, training flights in a training camp
etc., with gliders or balloons registered in Switzerland, without proof of medical fitness
required according to Annex 1 of the Gonvention on International Civil Aviation.
4. Certificates and licences to which the regulations under item 1 - 3 do not apply,
are recognized, under further notice, for non-commercial and non-professional activities as
an airman as follows:
4.1 The General Recognition covers licences for
- aeroplane pilots,
- helicopter pilots,
- piIots of powered gliders,
- free balloon pilots,
the holders of which
- do not have German nationality
- have their permanent residence in a foreign country and stay in the Federal Republic
of Germany only temporarily, however, for not more than six months.
4.2 The foreign licence shall be issued by an
ICAQ contracting state in accordance with the ICAO Standards and shall be valid.
4.3 Applicants shall submit or furnish proof to the competent aeronautical authority
(depending on their temporary domicile in the Federal Republic of Germany) or to
the local Luftaufsichtsstelle authorized by that authority of:
a) the foreign licence;
b) validity of the licence if it is proven by a special document and not entered into the
licence itself under IX (e.g. USA : Medical Certificate
Canada: Licence Renewal Certificate);
c) - as a free balloon pilot not less than two flights,
- as a pilot of other aircraft not less than three take-offs and three landings with the
type of aircraft concerned
within the last 90 days before filing an application.
4.4 The recognition of pilots' and helicopter pilots' licences is restricted to aeroplanes
and helicopters up to 2000 kg with a certificate for a minimum flight crew consisting
of one pilot, as well as for VFR flights by day.
4.5 The recognition of licences for pilots of powered gliders extends to the take-off
methods endorsed en the licence, for which the applicant has been trained or which
are proved pursuant to para 4.3 sub-par5 c).
4.6 If the above-stated requirements are fulfilled, the applicant will be granted a
certificate of recognition limited to the respective period of validity of the foreign
licence, however, to not mere than six months. A renewal of the General
Recognition is possible 12 months at the earliest after issuance of the previous
certificate of recognition.
A duplicate of the certificate issued shall be sent by the aeronautical authority concerned or
the Luftaufsichtsstelle to the Luftfahrt-Bundesamt in each case. In cases of doubt, a
decision shall be obtained from the Luftfahrt-Bundesamt before issuance of the certificate.
Issuance of the certificate of recognition is subject to a charge pursuant to section IV No. 9
of the table of charges published in the "Kostenverordnung der Luftfahrtverwaltung".
The airmen shall carry the certificate of recognition with their licence when on duty and
present it on request.
For holders of foreign airmen's licences who do not fulfil the requirements for a General
Recognition or intend to perform ratings not covered by the General Recognition. there is
the possibility of applying to the Luftfahrt-Bundesamt, Postfach 3054, 38020 Braunschweig,
for ,,Individual Recognition".