piasecki H-21


Derived from PV-17


Model History:

The Piasecki PD-22 (H-21) was an improved version of the HRP-2 Rescuer. It was the 4th tandem-rotor design from Piasecki. Because of its shape, covering the tail rotor transmision shaft, it was commonly called the Flying Banana. The H-21 had a fully articulated, three bladed, counter-rotating rotor system, with twin vertical fins fitted at the tail. Early versions were powered by a single Curtis-Wright R1820-103 Cyclone 1150 hp supercharged piston engine. It held a side by side crew of 2, in a dual-control cabin. Equipped with a hoist and a dorsal quick-release cargo sling, on a fixed tricycle undercarriage, it offered optional wheels, skis, or floats. The H-21 first flew on 11 Apr 1952. 707 of all versions were built, including two H-21D experimental models with a single and a twin turboshaft, replacing the piston Cyclone.

Derivatives and Versions of this model:

    YH-21     1950 The YH-21 / PD-22 was nicknamed the Workhorse by the US Air Force, who received 18 from Feb - Aug 1953. This was the first production batch of H ...
    H-21A     1951 The US Air Force followed the YH-21 order with an order for 38 H-21As [51-1523..15269 and 52-8487..8492]. The last six H-21As were delivered to ...
    H-21B     1952 Following the A model, the USAF ordered 168 H-21Bs [51-15854..15880, 52-8665..8679, 52-8681..8709, 53-4322..4402, 54-4000..4008, 55-5127..5131, a ...
    H-21C     1952
    B-V V42     1952 Vertol Model 42A. Related to H-21B and C models. The customer was Rick Helicopters of Canada, 10 were delivered; they were Commercial H-21 conv ...
    B-V V43     1956 Vertol 43: Customers were France and Germany, with 139 delivered between May 1956 to May 1960. They are listed as a utility model, for both comm ...
    H-21D     1957 Two H-21B used for engine test, 1958-1960. Piston engine replaced by either one or two gas turbine engine of two different marks. Both later re ...
    B-V V44     1957 Civil utility version of H-21B/C for general use. Certified for both civil & military use. Three sub models: V-44A/B/C depending on engine, avio ...

Organisations with this Model:

From Organisation with model H-21
usa US Air Force
    214 1952/74
usa US Army Aviation
    334 1954/66
canada Royal Canadian Air Force (1945-1968)
    20 1955/now
france Aéronautique Navale
japan Japan Air Self-Defense Force
    10 1956/now

canada Spartan Air Services Ltd
france Aviation Légère de l'Armée de Terre

Construction Numbers on database of H-21 or its versions


Construction Numbers of this Model: Help Us    

Displaying only
Japanese Air Force - Display All

Airframes conv to new variant  

C/NBuilt asYearHistory
    B-21     h-21b US Air Force 51-15874 : Piasecki PV-22 c/n B-21, ff?; del USAF as H-21B 51-1587+
Japan Air Self-Defense Force 02-4751 : del JASDF as H-21B 02-4751 unk; units unk; wfu & soc un+
    B-24     h-21b US Air Force 51-15877 : Piasecki PV-22 c/n B-24, ff?; del USAF as H-21B 51-1587+
Japan Air Self-Defense Force 02-4752 : del JASDF as H-21B 02-4752 unk; units unk; wfu & soc un+
    B-26     h-21b US Air Force 51-15879 : Piasecki PV-22 c/n B-26, ff?; del USAF as H-21B 51-1587+
Japan Air Self-Defense Force 02-4753 : del JASDF as H-21B 02-4753 unk; units unk; wfu & soc un+
    B-31     h-21b US Air Force 52-8668 : Piasecki PV-22 c/n B-31, ff?; del USAF as H-21B 52-8668+
Japan Air Self-Defense Force 02-4754 : del JASDF as H-21B 02-4754 unk; units unk; wfu & soc un+
    B-61     h-21b US Air Force 52-8699 : Piasecki PV-22 c/n B-61, ff?; del USAF as H-21B 52-8699+
Japan Air Self-Defense Force 02-4755 : del JASDF as H-21B 02-4755 unk; units unk; w/o 10Sep64.
    B-148     h-21b 1956 US Air Force 53-4398 : Piasecki PV-22 c/n B.148/FR.01, ff:?; ordered by USAF a+
Aviation Légère de l'Armée de Terre 8 000 108 : del ALAT as 8 000 108 in 1956; xfer GH No2, AA, unk; xf+
Japan Air Self-Defense Force 02-4756 : del JASDF as H-21B 02-4756 1964; units unk; wfu & pre H+
    B-149     h-21b 1956 US Air Force 53-4399 : Piasecki PV-22, cn B-149/FR.02, ff:?; ordered by USAF a+
Aviation Légère de l'Armée de Terre 8 000 109 : del ALAT in Algeria as 8 000 109 in 1956; AB, unk; xfer+
Japan Air Self-Defense Force 02-4757 : To JASDF as 02-4757. [Scramble]
    B-159     h-21b US Air Force 54-4006 : Piasecki PV-22 c/n B-159, ff?; del USAF as H-21B 54-400+
Japan Air Self-Defense Force 02-4758 : del JASDF as H-21B 02-4758 unk; units unk; w/o 16Mar63.
    B-160     h-21b US Air Force 54-4007 : Piasecki PV-22 c/n B-160, ff?; del USAF as H-21B 54-400+
Japan Air Self-Defense Force 02-4759 : del JASDF as H-21B 02-4759 unk; units unk; wfu & pre Gi+
    B-161     h-21b US Air Force 54-4008 : Piasecki PV-17 c/n B-161, ff?; del USAF as H-21B 54-400+
Japan Air Self-Defense Force 02-4760 : del JASDF as H-21B 02-4760 unk; units unk; wfu & soc un+
    10 C/N found.

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