Summary
We propose to adopt a new airworthiness directive (AD) for all Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes. This proposed AD was prompted by heavy corrosion found on the wing rear spar lower girder. This proposed AD would require inspections of the affected areas, modification of the wing trailing edge lower skin panels, and corrective actions if necessary. We are proposing this AD to detect and correct corrosion of the wing rear spar lower girder. This condition could reduce the load-carrying capability of the wing, possibly resulting in structural failure and loss of the airplane.