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FAA orders · airworthiness directive · historical

56-26-03: Crankshaft

FAA order 56-26-03 is an airworthiness directive published April 11, 1957. The FAA's subject line: Crankshaft. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Pratt & Whitney Division
Models
Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4, Wasp Jr. B-5, Wasp Jr. SB, Wasp Jr. SB-2, Wasp Jr. SB-3, Wasp Jr. T1B, Wasp Jr. T1B2, Wasp Jr. T1B3, Wasp Jr. T3A, Wasp Jr. TB, Wasp Jr. TB-2

Dates and paperwork

Published
April 11, 1957 (signed April 4, 1957)
Docket
Unknown
Replaces
54-22-02, 56-23-2
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 30, 2026. Connections as data: /graph/directive/56-26-03.json · aircraft systems.