Description
The NAS557-6A is a genuine Textron Aviation grommet used to keep a joint or pass-through tight. It fits the 1900 Airliner, 1900C Airliner, 1900D Airliner, Beechjet 400/400A, Bonanza 36, Bonanza F33, G33, F33A or F33C, Caravan or Grand Caravan EX, Citation CJ1 or CJ1+, Citation Excel, XLS, XLS+, XLS Gen 2, and Citation III, VI or VII, among other compatible variants. It carries an export classification of ECCN EAR99.
As an original-equipment (OEM) part supplied directly by Textron Aviation, the NAS557-6A is built to the aircraft maker's specification and cross-references the type design as documented in the maintenance data. Choosing the genuine part over an unapproved substitute preserves configuration control and simplifies inspection sign-offs.
Parts like this are shared across the Beechcraft 1900, Beechcraft, Beechcraft Bonanza, Cessna Caravan, Cessna Citation, Beechcraft King Air, Cessna Skyhawk, and Cessna Stationair aircraft, reflecting how much structure and hardware these models have in common.
Sealing components are sized and compounded for the fluids, temperatures, and pressures they contain, so the exact specified part maintains a tight joint.
Both the Cessna and Beechcraft lines are supported today by Textron Aviation, formed in 2014 to unite the two historic Wichita manufacturers with Hawker. The Beechcraft 1900, a 19-passenger regional airliner derived from the King Air, was produced from 1982 to 2002 and still serves commuter and cargo operators worldwide.
To check availability, request a quote for NAS557-6A or browse more Beechcraft 1900, Beechcraft, Beechcraft Bonanza, Cessna Caravan, Cessna Citation, Beechcraft King Air, Cessna Skyhawk, and Cessna Stationair parts on Flying411.
