camlobe………

Thanks for response. I feel sure your summary of the situation is probably correct i.e. the major manufacturers had “test registrations” which were re-used on dozens if not hundreds of aircraft. It seems their use is not necessarily documented in all cases. Have had a look through the Air Britain Register for the U.K., Ireland and the IOM 2010. N10F and N11C appear against quite a few Piper a/c registered in the UK from about 1960 through to about 1976.

Looking through the Kenyan VP-K** register, a number of Cessna 180s have
N11B allocated to them but some also have “normal” regsitrations allocated i.e. November Four numerals and a letter, such as N3166U.

Would be interesting to know if these “test registrations” appeared on the a/c. May put it up as a question on ABIX or fire it off to a Piper specialist. My hunch is they were not shown on the a/c. Just had another thought, you could hardly use one as a radio call sign, as likely there were several a/c around at the same time using the same marks!!!

Final question/thought about -KMH, wonder if the South African marks were carried? My guess is “no” but it is a guess……..!!!

Planemike