Pazmany PL-9 Stork - Pazmany Aircraft Corporation

Pazmany PL-9 Stork 

A plans built 3/4 scale replica of the 

Fiesler Fi-156 Storch 

Ladislao "Paz" Pazmany 

Pazmany Aircraft Corporation 

P.O. Box 60577 

San Diego, CA 92166 

619-224-7330 

EAA Chapter 187 - David Kumhyr david_kumhyr@yahoo.com 

for educational purposes only

Storch meant for low and slow 



Fiesler Storch - Ugly Low & Slow 

• Begun in 1935 as answer to an air ministry specification for a general purpose airplane that could take 

off and land in an extremely short distance. 

• Gerhard Fieseler and chief designer, Reinhold Mewes 

• Construction very conventional - steel tube and fabric fuselage with wooden wings. 

• Aerodynamics very extreme - most advanced techniques available for best slow speed performance. 

– 46-foot wing 

– full-length fixed slats 

– Fowler flaps that increased wing area by 18 percent 

– Drooping ailerons when flaps extended past 20 degrees 



D-IRPJ Demonstration Aircraft 

First flight 1936 



Used in many roles in all climates 



Storch moment of fame 

Rescue at Gran Sasso 

- improvised runway 

- altitude 9500' 



Great utility, visibility and simplicity 



Fi-156 Performance 

Take off ground roll 246' 

Landing ground roll 85' 

Stall w/flaps 31.7 mph 

Stall w/o flaps 38.5 mph 

Cruise 89.6 mph 

Max speed 112 mph 



Ladislao "Paz" Pazmany 



Pazmany Plans Set 

Arrived in a week 

- 3/4 scale 

- 42 drawings, $550 

- highly detailed 

- well laid out 

- all dimensions 

- materials lists 

- 9000 hours work - it shows! 

- Great Value! 



Fi-156 Specifications 

Units FI-156 PL-9 (Lycoming O-320D/E) 

Empty wt. 2006 lbs. 1132 lbs. 

Pilot & pax & eqp. 416 lbs. 350 lbs. 

Fuel 41 gallons 242 lbs. 246 lbs. 

Oil 22 lbs. 11 lbs. 

Max weight 2688 lbs. 1739 lbs. 

Wing area 280 ft2 166 ft2 Span 46.5 ft 36 ft 

Length 32.5 ft 24.3 ft 

Width (wings folded) 15.6 ft 12.8 ft 

Power Max 240 hp 160/180 hp 



Fi-156 Specifications 

Units FI-156 PL-9 (Lycoming O-320D/E) 

Wing loading lb/ft2 9.6 10.47 

Power loading lb/hp 11.34 11.6 

Span loading lb/ft 57.8 48.3 

Performance 

Stall w/flaps mph 31.7 32.7 

Stall w/o flaps mph 38.5 39.8 

Cruise mph 89.6 104 

Max speed mph 112 116 

T/O ground roll ft 246 246 

Landing ground roll ft 85 85 



Watermark Aviation Jig 

Watermark Aviation; Philip MacCabe and Terry Coughlan PL-9 (Ireland) 








Tail components 

Hall Brothers PL-9 Stork project 



Horizontal stabilizer 




Vertical stabilizer 



Original Storch wing 

- wood ribs 

- plywood leading 

edges 

- fabric covered 



PL-9 Stork wing 




Fixed leading edge slats 




Leading edge slats 



PL-9 Gear components 




Drop it on landing gear 




Potential power plants 

Lycoming O-320D/E 

Walter LOM M332

Pazmany PL-9 Stork - Pazmany Aircraft Corporation

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