The two-seat Sky-Walker Sky-Walker 1+1 was popular as an ultralight training
aircraft. The airframe exists out of an aluminium-tube construction. The
plane is constructed out of alu-tube covered with sailcloth. As
powersource the Sky-Walker 1+1 had a four cylinder, horizontal opposed
air-cooled Limbach L 1700 EA engine. Motorgliders en ultralight
aeroplanes frequently used the Limbach engines. The L 1700 EA was a
perfect engine for the ultralight Skywalker with a continuo 56 HP
(maximum 60 HP) and a weight of only 73 kg. The dated Limbach engine of
the PH-1U9 is replaced by a Rotax 462 UL CB.
The 1988-built Sky-Walker Sky-Walker 1+1 c/n 188 was registered PH-1U9 on 18 May 1988. On 9 April 1989, the Skywalker PH-1U9 was
involved in an accident: the pilot of the Comco Sherpa II PH-1K8 wanted to make an emergency landing during training and did not
count on that the Skywalker restarted. At a height of about 5 meters the devices hit each other and hit against the ground. The
Skywalker pilot was lightly injured in the crash. Sky-Walker Sky-Walker 1+1 PH-1U9 was repaired after the incident. On 15
January 1998, the registered aircraft type was changed into Sky-Walker Sky-Walker II. On 4 May 2005, the registered aircraft type
was changed again, this time into Sky-Walker 1+1. On 3 June 2009, registration PH-1U9 was cancelled by the authorities as the CofA
had expired on 15 March 2008. Sky-Walker 1+1 PH-1U9 was seen at the MLA-aerodrome Stadskanaal in Vledderveen, the Netherlands, on 22 April 2007.