HomeAD libraryAD 58-20-04Airworthiness Directive · Boeing Defense & Space Group HelicoptersAD 58-20-04Boeing Defense & Space Group HelicoptersRotorcraftIssued1958EffectiveNot statedMakerBoeing Defense & Space GroupSupersedesNothingApplies toThis AD applies to Boeing Defense & Space Group 42A, 42B, 44A, 44B.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 58-20-04 for its current status and any corrections
