§ Mr. Deakinsasked the Secretary of State for Transport if he will specify the precise nature of the repairs in the internal structure of Boeing 747 aircraft currently being carried out as a result of the discovery of cracks.
§ Mr. Michael SpicerThe Civil Aviation Authority has informed me that all the cracks found in the course of the inspections required for Boeing 747 aircraft are in the fuselage frames. Repair schemes follow normal practice for structural repairs on aircraft and are designed according to standard procedures, but Boeing advice is sought if required. The precise nature of the repairs will depend upon the position and size of the crack. They may take the form of a "doubler" patch riveted over the crack or, in some cases, the cracked segment of the frame may be removed and a new segment spliced into place. The work is monitored by engineers of the Civil Aviation Authority.