Hello,
(p.269).
Junkers F 13ke - Junkers L 5 (285/310 hp). (C/n.2078)
21.04.31 - CH-283 - Delivered to Borner Geneve Air Express, Geneva, Switzerland - L'Aigle de Geneve,
06.10 32 - To Aerotrafic SA, Geneva, Switzerland, new name.
23.10.33 - Cancelled from Swiss Air Register,
00.12.33 - D-2860 - Registered to Reichverband der Deutschen Luftfahrtindustrie (RDL), Erprobungstelle Staaken.
00.00.34 - D-OPIT - Reregistered.
01.06.35 - F.13k - Acceptance control by Erprobungstelle der Luftwaffe (E-Stelle), Rechlin, 200hrs endurance tests for Junkers L 5G engine.
23.08.38 - Still used by E-Stelle Rechlin as a staff transport.
See:
Junkers F 13 The World's First All-Metal Airliner.
Andersson,L., Endres,G., Mulder,R.J.M. & G. Ott.
Haywards Heath:EAM Books,2012.
pp.194 & 269.
See also:
http://www.pionnair-ge.com/spip1/spip.php?article127
Col.