HomeAD libraryAD 83-16-51Airworthiness Directive · Amendment 39-4741 · Columbia Helicopters, Inc. HelicoptersAD 83-16-51Columbia Helicopters, Inc. HelicoptersRotorcraftPublishedOctober 26, 1983EffectiveOctober 26, 1983MakerColumbia Helicopters, Inc.SupersedesNothingApplies toThis AD applies to Columbia Helicopters, Inc. 234.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 83-16-51 for its current status and any corrections