Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require replacing the rub strips of the tail fuel tank access door with new rub strips. This proposed AD was prompted by a report that the rub strips of the tail fuel tank access door were manufactured improperly. We are proposing this AD to prevent inadequate electrical bonding between the rub strips and the fuel access door, which can contribute to possible ignition of flammable fuel vapor in the tail fuel tank as a result of a lightning strike.