HomeAD libraryAD 89-21-05Airworthiness Directive · Amendment 39-6329 · The Boeing Company AirplanesAD 89-21-05The Boeing Company AirplanesAirplanePublishedOctober 17, 1989EffectiveOctober 17, 1989MakerThe Boeing CompanySupersedesNothingApplies toThis AD applies to The Boeing Company 747-400 Series.The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.Official sourcesThe AD at the FAA · its text as the FAA keeps itFAA Dynamic Regulatory System (DRS) · search 89-21-05 for its current status and any corrections
