The U.S. aircraft register, updated daily
Parts

Sealing Improvement

No failure report names the sealing improvement. 1 FAA approvals let 1 company make a replacement sealing improvement, Astra Jet CORP holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Israel Aircraft Industries 1125 (1).

MakerPartReplacesFitsGrantedStatus
Astra Jet CORPSealing Improvement Nose Compartment Door (Mod 6327) Kit 1125-52-096Astra 1125 Nose Compartment Door SealIsrael 11251993-07-19current

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.