Investigations into an incident involving a torn-out fuselage section on a Boeing aircraft have revealed that the US aircraft manufacturer has no records of any work on the fragment. the US National Transportation Safety Board (NTSB) emphasized on Wednesday that it did not know who had removed and reattached the fuselage section at the Boeing plant in Renton, Washington state. Boeing boss Dave Calhoun also said that the aircraft manufacturer had no documentation on the matter, wrote NTSB boss Jennifer Homendy in a letter to the US Senate Transport Committee. In the incident involving a virtual…