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FAA orders · emergency airworthiness directive · historical

2001-20-51: Helical Torquemeter Gearshaft Assembly

Emergency order 2001-20-51 is an airworthiness directive. The FAA's subject line: Helical Torquemeter Gearshaft Assembly. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
—
Models
250-B17, 250-B17C, 250-B17D, 250-B17E, 250-B17F, 250-B17F/1, 250-B17F/2, 250-C20, 250-C20B, 250-C20F, 250-C20R, 250-C20R/1, 250-C20R/2, 250-C20S, 250-C20W

Dates and paperwork

Docket
2001-NE-38-AD
Replaced by
2001-24-12
Status
Historical
The FAA's document
Read the order on the FAA's site

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2001-20-51.json · aircraft systems.