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PitcaimPAA-2. Note: Nose"training" wheel; no auxiliary vertical fins on tail; three strut pylon with tivo struts aft and one forward engirt is Martin-Chevrolet irj line 4 cylinder air-cooled—120 hp. (Ptlcairn Phok

Pitcairn PAA-1 (PA-20) at rear, then PCA-2 and what appears to be four PAA-1 autogiros.

(Pitcairn Photo)

"CAA AIRCRAFT LISTING" PITCAIRN PA-20 (or PAA-1), 2 POLAg, ATC 433

Engine Kinner B-5 125 hp

Fuel 27 gais.

Baggage 44 lbs. (Includes 2 para chutes 20 !bs. each or seat cushions, used when parachutes are not worn, 12 lbs. each)

Standard weight 1800 lbs. Spec, basis Approved Type Certificate

No. 433

Serial Nos. 19, 22 and up mfrd. prior to

9-30-39 eligible. Approval expired as of that date.

Class I equipment: Lead ballast 16 lbs.; Auxiliary fins 4 lbs.; Battery 10 lbs.; Starter 27 lbs.; Propeller adj. metal.

Class III equipment: Propeller fixed metal, net increase 20 lbs.; Safety wheel installation 12 lbs.; Three 1-Min. flares 9 lbs.; 10x3 tail wheel, no change in weight as 5 lbs. ballast must be removed from rear of fuselage for this installation.

NOTE 1. Serial Nos. 19, 32 to41, incL, 52 to 56, ind., and 72 have manufacturer's name-plates with the model designation PAA-1. Certificates should be issued accordingly as manufacturer desires these autogiros to remain as PAA-1.

Specifications

Gross weight Empty weight Useful load Top speed Cruise speed Landing speed

1770 lbs. 1198 lbs. 572 lbs. 93 mph 79 mph *0 to 15 mph

*Some specs show"0" landing speed and others "20—25"

These are factory-released figures in a letter to Aviation magazine dated April 14, 1933. The gross weight, above, does not agree with the CAA Aircraft Listing which shows a gross of 1800 lbs. The release included the following: gravity fuel system, dual controls, "motor" starter, primer, metal propeller, semi-low pressure tires, tail wheel, fire extinguisher, navigation lights, leather upholstery, safety glass windshields, hand-rubbed glossy finish. F.O.B. Willow Grove $4940. The term was usually "FAF" Flyaway Factory,

A rare, probably one-of-a-kind, PA-IS with a "coupe top," owned by Gilbert Flying Seroice of Valley Stream, New York

(Pitcaim P

A rare, probably one-of-a-kind, PA-IS with a "coupe top," owned by Gilbert Flying Seroice of Valley Stream, New York

(Pitcaim P

The PA-18 and PAA-1 (PA-20) looked very much alike. It was difficult in fact, unless someone was very familiar with each, to recognize the differences. A note to Aviation from Ed Rice, the Director of Public Information of the Pitcairn organization, says the PA-20 was built as a "companion model" to the PA-18. A decision was made to discontinue manufacture of the PA-20 about April 14, 1933 because of the similarity to the PA-18.

The PA-18 was somewhat more pleasing in appearance. A well-rounded fuselage made the Kinner B-5 engine look more like it belonged there than it did on the PA-20.

Construction of the fuselage was the same as all preceding Pitcairn Autogiros. An assortment of steel tube diameters and wall thicknesses were expertly gas welded together. The sides and bottom of the fuselage were rounded out with wood fairing strips.

The tail group was nearly identical to the PAA-1. The only noticeable difference was the shape of the auxiliary vertical fins.

The wing was identical in construction tails to the PAA-1, the span was decreased the chord increased. The ailerons stopped si on the fuselage end to permit the walkwa extend to the trailing edge.

The main landing gear was a scaled-d< PCA-2 landing gear. The tail gear was a si wheel with a rubber chord shock absorber A Kinner R-5,160 hp engine turned a fi; pitch Curtiss-Reed metal propeller eight I four inches in diameter. A ground adjust propeller was optional at an increase of pounds. A "coupe top" was also optional.

The rotor was identical to the PAA-1 (PA PA-24) except that it was 40 feet in diamt The rotor pylon was simplified to one fore one aft member with wire bracing from the of the pylon to. the upper longerons.

The factory specifications from a broct printed in 1932 again differ slightly from CAA "listing":

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