The aircraft:

The CAC Wirraway Mk I was a licence-built North American Aviation NA-16-2K (also known by its “charge code” NA-33) with numerous changes incorporated at the request of the RAAF. These aircraft were purchased by the RAAF for use as general purpose aircraft, for tasks including Army co-operation, photography, and advanced training (which covered instrument flying, high bombing, dive bombing and air-to-air combat). A total of 40 Mark I aircraft were produced under the CAC internal contract number CA-1. Production details can be found here.

The drawings:

This set of detailed drawings (originally drafted at 1:48 scale) shows details of the Mark I Wirraway, both as produced at the CAC factory as well as the major visible changes and modifications incorporated during RAAF service.

Plate 1a. Wirraway fuselage station diagram

The first plate shows the fuselage stations according to the Maintenance and Repair Manual. The eleven main stations were defined by upright tubes in the welded steel fuselage frame. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 31 KB).

Plate 1b. Wirraway fuselage framework

This drawing shows the geometry and dimensions of the Wirraway’s welded chrome-molybdenum steel tube fuselage framework. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 37 KB).

Plate 2a. Wirraway wing station diagram

This drawing shows the geometry of the Wirraway wing structure, including rib stations and airfoil sections. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 17 KB in size). 

Plate 4a. CA-1 Wirraway side elevations

This drawing shows side elevations of the CA-1 Wirraway, showing the differences between the port and starboard side of the aircraft. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 17 KB). 

Plate 4b. CA-1 Wirraway plan view

This drawing shows a plan view of the CA-1 Wirraway. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 17 KB).

Plate 4c. CA-1 Wirraway underside view

This drawing shows the underside view of the CA-1 Wirraway, including details of all the under-wing armament which the Wirraway could carry. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 17 KB).

Plate 4d. CA-1 Wirraway front and rear views

This drawing shows front and rear views of the CA-1 Wirraway, including details of the Pratt & Whitney R-1340 Wasp engine. Click on the image above to open a PDF file formatted for printing on A4 paper (approximately 17 KB). 

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