Description
The S2637-8Z4 is a genuine Textron Aviation pin groove — a fastening or retaining hardware item used in the airframe. It is applicable to the Skyhawk. It carries an export classification of ECCN EAR99, weighs 0.01 pounds, and measures 0.15 (L) x 0.1 (W) x 0.1 (H) Inches.
Supplied directly by Textron Aviation as an original-equipment (OEM) part, the S2637-8Z4 meets the manufacturer's specification and keeps the aircraft configuration-correct, with clean traceability in the maintenance records.
Parts like this are shared across the Cessna Skyhawk aircraft, reflecting how much structure and hardware these models have in common.
Aircraft hardware is called out to a specific specification for each location; an off-the-shelf equivalent is rarely acceptable. Using the factory part number preserves configuration control, so the airframe stays consistent with its approved type design and the work is straightforward to sign off at inspection.
Choosing the genuine article over an unapproved part keeps mechanics' sign-offs clean and the aircraft's configuration exactly as certificated. The value of an OEM part is as much in its paperwork and pedigree as its metal — both of which an aircraft's records require.
Cessna traces to the company Clyde Cessna founded in Wichita, Kansas in 1927; Textron Inc. acquired it in 1992, and since 2014 it has anchored Textron Aviation alongside Beechcraft and Hawker. The Cessna 172 Skyhawk is the most-produced aircraft in history, with more than 44,000 built since 1956, and remains in production under Textron Aviation.
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