| US Air Force procurement began with 18 of the YH-21 Work Horse in 1952, which was the first tandem rotor helicopter used by the USAF. 33 H-21As followed and it distinguished itself in the SAR role, where it performed well in the Arctic environment. 168 H-21Bs were delivered. These were powered by the improved 1425hp Curtis-Wright R-1820-107 piston Cyclone. Most had been retired by 1966 but a few lingered on in service for almost 10 more years.  54 Air Rescue Sqdn Goose Bay LAB has 2 H-21Bs serve radar dew line and aircraft rescue Tripoli Libya had 2 H-21. 1959-1960 Took 1 to Belgium Congo in 1959 |
Units | |
| Years | Units | bold : Current base of the Unit |
| 1961/63 | 54 ARRS |  Goose Bay |
| 1956/60 | 20th SOS | Myrtle Beach Smyrna / Sewart AFB |
| 1956/60 | 55 RQS | |
| 1956/58 | 23 FTS |  Phalsbourg / Camp de la Horie |
| 1955/56 | 54 ARRS | Goose Bay |
List of Aircraft | Help Us | |
| C/N | Mod | Built | ID In this Organisation | In other Org | |||
 | B-1 | h-21b | 51-15854: USAF H-21B, redesig CH-21B, HH-21B | ||||
| B-2 | h-21b | 51-15855: USAF H-21B, redesig CH-21B, HH-21B pictured with 6515 OMS Ed+ | ||||
| B-21 | h-21b | 51-15874: Piasecki PV-22 c/n B-21, ff?; del USAF as H-21B 51-15874; un+ |  02-4751: del JASDF as H-21B 02-4751 unk; units unk; wfu & soc un+ | ||||
| B-24 | h-21b | 51-15877: Piasecki PV-22 c/n B-24, ff?; del USAF as H-21B 51-15877; un+ | 02-4752: del JASDF as H-21B 02-4752 unk; units unk; wfu & soc un+ | ||||
| B-26 | h-21b | 51-15879: Piasecki PV-22 c/n B-26, ff?; del USAF as H-21B 51-15879; un+ | 02-4753: del JASDF as H-21B 02-4753 unk; units unk; wfu & soc un+ | ||||
| B-31 | h-21b | 52-8668: Piasecki PV-22 c/n B-31, ff?; del USAF as H-21B 52-8668; uni+ | 02-4754: del JASDF as H-21B 02-4754 unk; units unk; wfu & soc un+ | ||||
B-61  | h-21b | 52-8699: Piasecki PV-22 c/n B-61, ff?; del USAF as H-21B 52-8699; uni+ | 02-4755: del JASDF as H-21B 02-4755 unk; units unk; w/o 10Sep64. | ||||
| B-72 | h-21b | 53-4322: Shipped to Turner Field in sections from Atkinson Field, Jun+ | - FG-322: to Zaire AF as FG-322 | ||||
| B-74 | h-21b | 53-4324: Shipped to Turner Field in sections from Atkinson Field whil+ | - 53-4324: Pate Museum of Transportation, Texas 1970 to 2011 when + | ||||
| B-76 | h-21b | 1955 | 53-4326: USAF; to civ as N6792 | - N6792: from 1982-;
Sep85 seized during drug raid, donated to M+ | ||
| B-129 | h-21b | 53-4379: USAF H-21B;
w/o Jul61 during search mission in mountains NW+ | |||||
| B-136 | h-21b | 1954 | 53-4386: Piasecki PV-22 c/n B-136, ff:?; ordered by USAF as H-21B 53-+ | 31.F.1: xfer French Navy as 31.F.1, 1956; w/o at Rhoufi, 08Nov5+ | |||
B-137  | h-21b | 1954 | 53-4387: Piasecki PV-22 c/n B-137, ff:?; ordered by USAF as H-21B 53-+ | 31.F.2: to French Navy as 31.F.2, 1956; soc 1968. | |||
| B-138 | h-21b | 1954 | 53-4388: Piasecki PV-22 c/n B-138, ff:?; ordered by USAF as H-21B 53-+ | 31.F.3: xfer French Navy as 31.F.3, 56; w/o 14Aug56. | |||
| B-146 | h-21b | 1956 | 53-4396: Piasecki PV-22, cn B.146, ff:?; ordered by USAF as H-21B, 53+ | 9641: CH-125 type, RCAF-9 d/d 12jan56, BuNo 53-4396 CF-JJO: Spartan Air Service, reg Dominion Helicopters for opera+ 9641: RCAF Sep65-Aug71, conv to V42A, scr | |||
| B-148 | h-21b | 1956 | 53-4398: Piasecki PV-22 c/n B.148/FR.01, ff:?; ordered by USAF as H-2+ | 8 000 108: del ALAT as 8 000 108 in 1956; xfer GH No2, AA, unk; xf+ 02-4756: del JASDF as H-21B 02-4756 1964; units unk; wfu & pre H+ | |||
| B-149 | h-21b | 1956 | 53-4399: Piasecki PV-22, cn B-149/FR.02, ff:?; ordered by USAF as H-2+ | 8 000 109: del ALAT in Algeria as 8 000 109 in 1956; AB, unk; xfer+ 02-4757: To JASDF as 02-4757. [Scramble] | |||
| B-150 | h-21b | 1955 | 53-4400: Piasecki PV-22, c/n B.150/FR.03, ff:1955?, ordered by USAF a+ | 8 000 110: del ALAT in Algeria as 8 000 110 in 1956; xfer GH No2, + F-YDCE: xfer French Navy as F-YDCE in 1959 8 000 110: xfer ALAT, GH No2, ARZ, unk; xfer ES-ALAT, unk; soc: 18+ | |||
| B-154 | h-21b | 1956 | 54-4001: Piasecki PV-22, c/n B.154/FR.07, ff:1954; ordered by USAF as+ | 8 000 114: del ALAT (Algeria) as 8 000 114; xfer GH No2, AAG, unk; F-YDCB: xfer Aeronavale as F-YDCB, unk; 8 000 114: xfer ALAT, GH No2, AAG, 1960; xfer ES.ALAT, unk; xfer E+ - N64606: sold Midwest Helicopter Airways as N64606, unk; sold Br+ preserved at Classic Rotors Museum, Ramona, CA; Oct01 p+ | ||
| B-159 | h-21b | 54-4006: Piasecki PV-22 c/n B-159, ff?; del USAF as H-21B 54-4006; un+ | 02-4758: del JASDF as H-21B 02-4758 unk; units unk; w/o 16Mar63. | ||||
| B-160 | h-21b | 54-4007: Piasecki PV-22 c/n B-160, ff?; del USAF as H-21B 54-4007; un+ | 02-4759: del JASDF as H-21B 02-4759 unk; units unk; wfu & pre Gi+ | ||||
| B-161 | h-21b | 54-4008: Piasecki PV-17 c/n B-161, ff?; del USAF as H-21B 54-4008; un+ | 02-4760: del JASDF as H-21B 02-4760 unk; units unk; wfu & soc un+ | ||||
| B-162 | h-21b | 1956 | 55-5127: Piasecki PV-22 c/n B-162, ff:?; ordered by USAF as H-21B 55-+ | 31.F.3: del Aeronavale as 31F.3, C, Oct 1956; 8 000 xxx: xfer ALAT as 8 000 xxx, unk; xfer GH No2, ARS, unk; xfe+ | |||
| B-163 | h-21b | 1956 | 55-5128: Piasecki PV-22 c/n B-163, ff:?; ordered by USAF as H-21B 55-+ | 31.F.4: del Aeronavale as 31.F.4, D, Nov 1956; 8 000 yyy: xfer ALAT as 8 000 xxx, unk; xfer GH No2, ART, unk; xfe+ | |||
| B-164 | h-21b | 1956 | 55-5129: Piasecki PV-22 c/n B-164, ff:?; ordered by USAF as H-21B 55-+ | 31.F.5: del French Navy as 31F.5, E, Nov56; asgd Algeria, Nov56+ | |||
| B-165 | h-21b | 1956 | 55-5130: Piasecki PV-22 c/n B-165, ff:?; ordered by USAF as H-21B 55-+ | 31.F.6: del French Navy as 31.F.6, Nov56; asgd Algeria, Nov56; + | |||
| B-166 | h-21b | 1956 | 55-5131: Piasecki PV-22 c/n B-166, ff:?; ordered by USAF as H-21B 55-+ | 31.F.7: del French Navy as 31.F.7, Nov56; asgd Algeria, Nov56; + | |||
| B-167 | h-21d | 1958 | 57-2610:  h-21b Vertol V-42A, cn B-167, ff:?; ordered by USAF as H-21B 57-26+ | ||||
| B-168 | h-21d | 1958 | 57-2611: h-21b Vertol V-42A, cn B-168, ff:?; ordered by USAF as H-21B 57-26+ | ||||
