Adrodd fel Amhriodol

' ? Flying Test Bed airframes used by Rolls Royce during the early 1950's? Possibly they are Avro Lancastrians or Lincolns? '

Dywedwch wrthym pam mae’r cynnwys hwn yn amhriodol *(gofynnol)

Dewis categori *(gofynnol)

Os ‘Arall’ rhowch fanylion (dewisol)

Eich enw (dewisol)

Eich cyfeiriad e-bost (dewisol)

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