The U.S. aircraft register, updated daily
Parts

Blue Sky

No failure report names the blue sky. 4 FAA approvals let 2 companies make a replacement blue sky, Gilcom Technologies holding the most (2).

Approved replacement parts 4 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a blue sky and sell it as an approved part for the models named. These are the companies holding such approvals for a blue sky:

For these models most: Cessna 414 Chancellor (2), Construcciones Aeronauticas Sa C-212 (1), Bell 407 (1), Bell 206 JetRanger and LongRanger (1).

MakerPartReplacesFitsGrantedStatus
Aviation Specialties Unlimited INCBlue Sky Network Filter ASU-ACH1000-2Modification PartEADS CASA C-212-CC2011-01-20current
Aviation Specialties Unlimited INCBlue Sky Network Filter ASU-ACH1000-2Modification PartBell 206A, 206B, 206 L2010-10-21current
Gilcom TechnologiesBlue Sky Network D-1000C MDL 3SKY01Modification PartCessna 414A2005-03-17current
Gilcom TechnologiesBlue Sky Network D-1000 MDL 3SKY01Modification PartCessna 414A2004-02-01current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.