630:
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33:
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213:
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military service including in
Indochina before being replaced, and many ex-military models went onto civilian service in the 1970s. This was the biggest helicopter in the world to enter service at the time, and one of the earliest twin engine models. It was known for being noisy but earned a good reputation for reliability. The Navy also adapted it to carry a naval radar, with two entering service as
938:
180:
Developed in the early 1950s with its first flight in 1953, it filled a 1950 Navy requirement for an assault helicopter. The design includes a front loading ramp with side opening clam shell doors on the nose. It is powered by two radial piston engines. It served well into the 1960s in active
328:
until May 1967. They were very successful at this role, recovering over US$ 7.5 million worth of equipment, some of which was retrieved from behind enemy lines. The CH-37 was also used to recover film capsules descending from space by parachute.
273:
status in the early 1960s, being given Lear auto-stabilization equipment and the ability to load and unload while hovering. In the 1962 unification of United States military aircraft designations, the USMC examples were redesignated from
464:
turboshafts for power in a flying test rig. Due to vibration they changed to a six-bladed S-64 rotor. The private venture project was ended when
Westland took over three British helicopter companies and their more advanced and funded
308:
engines subsequently employed in later military helicopters. This accounted for the type's fairly short service life, all being withdrawn from service by the late 1960s, replaced in Army service by the distantly related
176:
with USMC in 1956, and as the H-37A Mojave with the U.S. Army that same year. In the early 1960s the designation was standardized to CH-37 for both services, with the HR2S-1 redesignated as CH-37C specifically.
332:
A total of 154 were produced by the time production ended. Of those 94 were H-37A, and 90 H-37 were converted to H-37B (later CH-37A and B respectively). It was the largest piston powered helicopter.
901:
2914:
293:. This left the fuselage free for cargo, which could be loaded and unloaded through large clamshell doors in the nose. The early models could carry a payload of either three
2369:
2033:
297:(a lightweight jeep-like vehicle) or 26 troops. For storage, the main rotor blades folded back on the fuselage and the tail rotor mast folded forward on the fuselage.
239:(USMC), with a capacity of 26 fully equipped Marines. An order for the aircraft was placed in 1951 using the U.S. Navy/U.S. Marine Corps designation of the time of
3417:
377:
Production model for USMC with modified engine nacelles, twin mainwheels and dorsal fin, redesignated CH-37C in 1962, 55 built (order for additional 36 cancelled).
401:
All but four of the H-37As were modified with a redesigned cargo door, automatic stabilization equipment and crashproof fuel cells. Later redesignated CH-37B.
460:
used the S-56 control systems, rotors and gearbox as the basis for the
Westminster but used their own tubular frame and twin 2,900 hp (2,200 kW)
395:
Military transport version of the HR2S for the US Army, changes included dorsal fin and modified rotor head fairing, redesignated CH-37A in 1962, 94 built.
629:
920:
1027:
2906:
1215:
789:
269:, the first being delivered in summer 1956. All Marine Corps and Army examples were delivered by mid-1960. Army examples were all upgraded to
285:
At the time of delivery, the CH-37 was the largest helicopter in the
Western world and it was Sikorsky's first twin-engine helicopter. Two
3442:
1257:
2800:
3437:
3422:
2019:
695:
3427:
1997:
371:
Prototype
Assault Transport for the US Marine Corps, powered by two 1,900 hp (1,400 kW) R-2800-54 engines, four built.
3412:
286:
192:
in the United
Kingdom; prototypes were produced, but it did not go into full production. The S-56 was also the basis for the
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in
September 1965 to assist in the recovery of downed U.S. aircraft, serving in this role from
70:
1103:
813:"Sikorsky Aircraft S-56 (H-37 / CH-37 Mojave) – Specifications – Technical Data / Description"
874:
609:
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8:
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1981:
1951:
1903:
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18-cylinder air-cooled radial piston engines, 2,100 hp (1,600 kW) each
289:
radial engines were mounted in outboard pods that also contained the retractable
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212:
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909:. History and Museums Division United States Marine Corps. pp. 119–20.
204:
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1230:
1104:"Warbird Registry – Sikorsky CH-37 Mojave – A Warbirds Resource Group Site"
711:
542:
461:
456:
Unable to get government support for licence production of the civil S-56,
290:
2711:
2572:
2240:
1976:
1526:
576:
321:
310:
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2250:
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510:
504:
348:
305:
169:
532:
Closeup of the engine nacelle housing the Wasp radial engine at museum
2295:
2188:
2127:
441:
1235:
881:. Vol. 101, no. 6. Hearst Magazines. June 1954. p. 93
2833:
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2522:
2391:
580:
445:
217:
941:
This article incorporates text from this source, which is in the
565:
552:
CH-37B (Army Ser. No. 58-1005) "Tired Dude" is on display at the
546:
516:
223:
38:
978:
976:
561:
265:
evaluated the prototype in 1954 and ordered 94 examples as the
252:
973:
740:
126 nmi (145 mi, 233 km) with maximum payload
383:
Airborne early warning aircraft for the US Navy, two built.
2043:
Numerical sequence used by USAAC/USAAF/USAF 1941–present;
1033:. History and Museums Division,US Marine Corp. p. 79
875:"Three Jeeps Ride in the Marine Corps Biggest Helicopter"
2808:
1226:
Photos of CH-37's from 49th Avn Bn, CAL ARNG, and others
304:, which were larger, heavier and less powerful than the
300:
The CH-37 was one of the last heavy helicopters to use
1194:(revised ed.). London: Putnam. pp. 486–487.
251:
began in July 1956 to Marine
Helicopter Squadron One (
608:
CH-37B (Army Ser. No. 57-1646) is on display at the
586:
CH-37B (Army Ser. No. 58-0999) is on display at the
571:
CH-37B (Army Ser. No. 57-1651) is on display at the
537:
CH-37B (Army Ser. No. 55-0644) is on display at the
710:4,072 sq ft (378.3 m) blade section
429:
255:), with a total of sixty aircraft being produced.
1189:
633:3-view line drawing of the Sikorsky CH-37A Mojave
3404:
1216:CH-37 Mojave US Army Aviation history fact sheet
624:
258:It was called HR2S-1 Duece in the USMC service.
235:came into being as an assault transport for the
3418:1950s United States military transport aircraft
389:One HR2S-1 helicopter evaluated by the US Army.
188:The design lead to a production attempt as the
790:List of military aircraft of the United States
247:flew in 1953 and production deliveries of the
2794:
2013:
1251:
1156:
1190:Swanborough, F.G.; Bowers, Peter M. (1971).
1121:
849:"Vertical rewind: The original heavy lifter"
670:64 ft 3 in (19.58 m) fuselage
628:
867:
168:) is an American large heavy-lift military
2801:
2787:
2020:
2006:
1258:
1244:
1231:HELIS.com Sikorsky S-56/H-37/HR2S Database
1192:United States Military Aircraft since 1908
948:
597:CH-37C (BuNo 145864) is on display at the
360:CH-37 Mojave attempting to lift a crashed
16:1953 airlift helicopter series by Sikorsky
734:100 kn (120 mph, 190 km/h)
728:113 kn (130 mph, 209 km/h)
696:Pratt & Whitney R-2800-54 Double Wasp
199:
2876:
527:
355:
347:
339:
222:
211:
203:
172:of the 1950s. It entered service as the
3026:
1170:
1139:"The Incomplete Guide to Airfoil Usage"
3405:
807:
805:
425:Sikorsky company designation for H-37.
287:Pratt & Whitney R-2800 Double Wasp
2782:
2001:
1265:
1239:
1130:
899:
588:Evergreen Aviation & Space Museum
1136:
843:
841:
839:
837:
835:
833:
1028:"Marines and Helicopters 1946–1962"
802:
704:72 ft 0 in (21.95 m)
13:
3443:United States military helicopters
1057:United States Army Aviation Museum
676:22 ft 0 in (6.71 m)
539:United States Army Aviation Museum
14:
3454:
2032:designations, Army/Air Force and
1221:Information and Specs on the H-37
1209:
903:Marines and Helicopters 1962–1973
830:
599:National Museum of Naval Aviation
448:with a crew cockpit at the front.
2812:helicopter designations pre-1962
936:
476:
430:Derivatives and related projects
352:HR2S-1W early warning helicopter
31:
3438:Twin-engined piston helicopters
3423:1950s United States helicopters
3114:Helicopter, Transport 1944-1962
1096:
1071:
752:910 ft/min (4.6 m/s)
688:31,000 lb (14,061 kg)
573:U.S. Army Transportation Museum
313:and in the Marine Corps by the
3428:Military transport helicopters
1162:Swanborough and Bowers p. 437.
1045:
1020:
998:
984:"Sikorsky CH-37 Mojave review"
893:
682:20,831 lb (9,449 kg)
320:Four CH-37Bs were deployed to
1:
3290:Helicopter, Utility 1950-1962
3049:Helicopter, Trainer 1948-1962
956:"S-56/HR2S-1/H-37 Helicopter"
795:
640:U.S. Army Aircraft Since 1947
625:Specifications (CH-37 Mojave)
3413:Aircraft first flown in 1953
3207:Helicopter, Utility pre-1949
3020:Helicopter, Trainer pre-1948
2047:1948–1956 and 1962–present;
746:8,700 ft (2,700 m)
558:Davis-Monthan Air Force Base
523:
469:
444:"sky-crane" with a skeletal
419:HR2S-1 redesignated in 1962.
326:Marble Mountain Air Facility
243:. The first prototype, the
227:HR2S-1 with M422 Mighty Mite
7:
1173:US Army aircraft since 1947
756:
603:Naval Air Station Pensacola
413:H-37B redesignated in 1962.
407:H-37A redesignated in 1962.
335:
10:
3459:
2818:Helicopter, Anti-submarine
498:United States Marine Corps
237:United States Marine Corps
98:United States Marine Corps
3373:
3355:
3337:
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3289:
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3249:
3231:
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3138:
3120:
3113:
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3055:
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3019:
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2817:
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2732:
2631:
2442:
2379:
2368:
2156:
2065:
2056:
2041:
1944:
1785:
1555:
1487:
1274:
1171:Harding, Stephen (1990).
554:Pima Air and Space Museum
144:
136:
128:
117:
112:
104:
89:
81:
69:
61:
51:
46:
30:
23:
2899:Helicopter, Observation
2057:Army/Air Force sequence
1788:(military designations)
1490:(military designations)
1175:. Shrewsbury: Airlife.
1143:m-selig.ae.illinois.edu
1108:www.warbirdregistry.org
900:Fails, William (1978).
645:General characteristics
1558:(company designations)
1277:(company designations)
634:
533:
364:
353:
345:
228:
220:
209:
200:Design and development
196:helicopter prototype.
1945:Experimental aircraft
1857:CH-53E Super Stallion
632:
610:Classic Rotors Museum
531:
359:
351:
343:
226:
215:
207:
164:(company designation
162:Sikorsky CH-37 Mojave
2370:Tri-Service sequence
2157:Prefix H-, 1948–1962
2066:Prefix R-, 1941–1948
1862:CH-53K King Stallion
1488:Fixed-wing aircraft
1275:Fixed-wing aircraft
1127:Harding 1990, p.239.
1083:Pima Air & Space
1008:. globalsecurity.org
1006:"H-37 Mojave / HR2S"
817:www.flugzeuginfo.net
778:Westland Westminster
773:Sikorsky CH-54 Tarhe
702:Main rotor diameter:
452:Westland Westminster
190:Westland Westminster
153:Westland Westminster
2380:1962 redesignations
1389:S-22/23/24/25/26/27
855:. 21 September 2018
762:Related development
686:Max takeoff weight:
344:XHR2S-1 of the USMC
47:General information
37:H-37 Mojave of the
2632:Alternate sequence
1852:CH-53 Sea Stallion
635:
534:
491:United States Army
365:
354:
346:
315:CH-53 Sea Stallion
263:United States Army
229:
221:
210:
94:United States Army
3433:Sikorsky aircraft
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3285:
3284:
3202:
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3109:
3108:
3044:
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2870:Helicopter, Crane
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2864:
2776:
2775:
2765:
2764:
2364:
2363:
1995:
1994:
1137:Lednicer, David.
1079:"Sikorsky CH-37B"
926:on 20 August 2019
879:Popular Mechanics
458:Westland Aircraft
295:M422 Mighty Mites
158:
157:
118:Introduction date
76:Sikorsky Aircraft
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2443:New designations
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2312:
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2022:
2015:
2008:
1999:
1998:
1952:Cypher/Cypher II
1899:SH-60B/F Seahawk
1894:MH-60R/S Seahawk
1884:HH-60G Pave Hawk
1879:UH-60 Black Hawk
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1053:"Our Collection"
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986:. olive drab.com
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960:sikorskyarchives
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919:. Archived from
908:
897:
891:
890:
888:
886:
871:
865:
864:
862:
860:
845:
828:
827:
825:
823:
809:
744:Service ceiling:
721:
708:Main rotor area:
647:
482:
480:
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132:18 December 1953
56:Cargo helicopter
35:
21:
20:
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2350:
2320:
2310:
2152:
2058:
2052:
2037:
2026:
1996:
1991:
1940:
1926:CH-124 Sea King
1916:RAH-66 Comanche
1847:HH-52A Seaguard
1787:
1781:
1557:
1551:
1489:
1483:
1276:
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1212:
1202:
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1157:
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1059:. 20 March 2023
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202:
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100:
62:National origin
42:
25:
17:
12:
11:
5:
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1210:External links
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1921:VH-92 Patriot
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1889:HH-60J/MH-60T
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1795:SH-3 Sea King
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1565:VS-300 (S-46)
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1182:1-85310-102-8
1178:
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1023:
1007:
1001:
985:
979:
977:
961:
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951:
944:
943:public domain
922:
918:
912:
905:
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870:
854:
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844:
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838:
836:
834:
818:
814:
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806:
801:
791:
788:
787:
786:
785:
784:Related lists
779:
776:
774:
771:
769:
768:Sikorsky S-60
766:
765:
764:
763:
751:
748:
745:
742:
739:
736:
733:
732:Cruise speed:
730:
727:
724:
723:
722:
720:
713:
709:
706:
703:
700:
697:
693:
690:
687:
684:
681:
680:Empty weight:
678:
675:
672:
669:
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664:24 stretchers
663:
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485:
484:United States
474:
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459:
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443:
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436:Sikorsky S-60
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400:
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362:Piasecki H-21
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194:S-60 Skycrane
191:
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163:
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149:Sikorsky S-60
147:
143:
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135:
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116:
111:
107:
103:
99:
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92:
90:Primary users
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84:
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74:
72:
68:
65:United States
64:
60:
57:
54:
50:
45:
40:
34:
29:
24:CH-37 Mojave
22:
19:
3188:
2771:Not assigned
2428:
2315:
2051:1962–present
1837:CH-37 Mojave
1836:
1832:H-34 Choctaw
1786:Helicopters
1614:
1556:Helicopters
1191:
1172:
1158:
1146:. Retrieved
1142:
1132:
1123:
1111:. Retrieved
1107:
1098:
1086:. Retrieved
1082:
1073:
1061:. Retrieved
1056:
1047:
1035:. Retrieved
1022:
1010:. Retrieved
1000:
988:. Retrieved
963:. Retrieved
959:
950:
928:. Retrieved
921:the original
902:
895:
883:. Retrieved
878:
869:
857:. Retrieved
853:Vertical Mag
852:
820:. Retrieved
816:
783:
782:
761:
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749:
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737:
731:
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707:
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691:
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637:
636:
556:adjacent to
543:Fort Novosel
496:
495:
489:
488:
462:Napier Eland
398:H-37B Mojave
392:H-37A Mojave
331:
319:
299:
291:landing gear
284:
279:
275:
270:
266:
260:
257:
248:
244:
240:
232:
230:
187:
182:
179:
174:HR2S-1 Deuce
173:
165:
161:
159:
129:First flight
105:Number built
71:Manufacturer
26:HR2S-1 Deuce
18:
2750:CH-92/VH-92
2501:HH-53/MH-53
2059:(1941–1962)
2034:Tri-Service
1874:CH-54 Tarhe
719:Performance
692:Powerplant:
592:McMinnville
577:Fort Eustis
311:CH-54 Tarhe
3407:Categories
2030:helicopter
1201:0370000943
1012:22 January
990:17 January
930:8 December
796:References
660:26 troops
618:Ramona, CA
605:, Florida.
517:HMR(M)-463
511:HMR(M)-462
505:HMR(M)-461
306:turboshaft
216:Loading a
170:helicopter
140:Late 1960s
41:in flight.
3339:McCulloch
3233:McDonnell
3215:McDonnell
3140:McDonnell
2878:McDonnell
2687:CH-3/HH-3
2049:U.S. Navy
2045:U.S. Army
712:NACA 0012
658:Capacity:
638:Data from
594:, Oregon.
524:Survivors
519:1958–1959
513:1957–1965
507:1957–1966
470:Operators
465:projects.
442:prototype
3375:Sikorsky
3357:Piasecki
3269:Sikorsky
3251:Piasecki
3176:Sikorsky
3158:Piasecki
3028:Sikorsky
2979:Sikorsky
2943:Gyrodyne
2844:Sikorsky
1967:Raider X
1269:aircraft
1267:Sikorsky
1148:16 April
1037:30 April
757:See also
581:Virginia
446:fuselage
336:Variants
218:Dodge WC
2036:systems
1957:Firefly
1904:H-60J/K
1800:HH-3E/F
1645:S-61L/N
674:Height:
668:Length:
612:at the
566:Arizona
547:Alabama
380:HR2S-1W
368:XHR2S-1
322:Vietnam
245:XHR2S-1
183:HR2S-1W
137:Retired
113:History
85:Retired
39:US Army
3057:Hiller
2925:Hiller
1982:XBLR-3
1962:Raider
1532:XBLR-3
1399:S-29-A
1198:
1179:
1113:22 May
1088:22 May
1063:22 May
965:26 May
913:
885:26 May
859:22 May
822:23 May
738:Range:
562:Tucson
481:
416:CH-37C
410:CH-37B
404:CH-37A
374:HR2S-1
280:CH-37C
276:HR2S-1
271:CH-37B
267:CH-37A
249:HR2S-1
208:HR2S-1
82:Status
3298:Kaman
3075:Kaman
2961:Kaman
2857:HSS-2
2852:HSS-1
2757:H-139
2648:J/T/W
2556:MH-60
2551:HH-60
2546:SH-60
2541:UH-60
2537:H-60
2488:CH-53
2484:H-53
2397:H-13J
2392:H-13F
2199:H-13J
1909:VH-60
1867:MH-53
1842:XH-39
1777:S-434
1772:S-333
1767:S-300
1762:S-103
1757:S-102
1752:S-100
1650:S-61R
1474:VS-44
1031:(PDF)
924:(PDF)
907:(PDF)
654:three
652:Crew:
386:YH-37
253:HMX-1
121:July
3388:HU2S
3321:Bell
3311:HU2K
3194:HR3S
3189:HR2S
3093:Bell
3007:HO5S
3002:HO4S
2997:HO3S
2992:HO2S
2826:Bell
2745:H-92
2740:H-90
2722:OH-6
2717:MH-6
2712:AH-6
2708:H-6
2692:SH-3
2683:H-3
2657:UH-1
2644:AH-1
2623:H-73
2618:H-72
2613:H-71
2608:H-70
2603:H-69
2598:H-68
2593:H-67
2588:H-66
2583:H-65
2578:H-64
2573:H-63
2568:H-62
2563:H-61
2533:H-59
2528:H-58
2523:H-57
2518:H-56
2513:H-55
2508:H-54
2480:H-52
2475:H-51
2470:H-50
2465:H-49
2460:H-48
2455:H-47
2450:H-46
2434:H-43
2429:H-37
2424:H-34
2419:H-25
2414:H-23
2409:H-21
2404:H-19
2387:H-13
2356:H-45
2351:H-44
2346:H-43
2341:H-42
2336:H-41
2331:H-40
2326:H-39
2321:H-38
2316:H-37
2311:H-36
2306:H-35
2301:H-34
2296:H-33
2291:H-32
2286:H-31
2281:H-30
2276:H-29
2271:H-28
2266:H-27
2261:H-26
2256:H-25
2251:H-24
2246:H-23
2241:H-22
2236:H-21
2231:H-20
2226:H-19
2221:H-18
2216:H-17
2211:H-16
2206:H-15
2194:H-13
2189:H-12
2184:H-11
2179:H-10
2148:R-16
2143:R-15
2138:R-14
2133:R-13
2128:R-12
2123:R-11
2118:R-10
1987:XV-2
1972:SB-1
1822:H-18
1747:S-97
1742:S-95
1737:S-92
1732:S-80
1727:S-76
1722:S-75
1717:S-74
1712:S-73
1707:S-72
1702:S-71
1697:S-70
1692:S-69
1687:S-68
1682:S-67
1677:S-66
1672:S-65
1667:S-64
1662:S-63
1657:S-62
1640:S-61
1635:S-60
1630:S-59
1625:S-58
1620:S-57
1615:S-56
1610:S-55
1605:S-54
1600:S-53
1595:S-52
1590:S-51
1585:S-50
1580:S-49
1575:S-48
1570:S-47
1547:XV-2
1537:XPBS
1512:JR2S
1502:C-28
1479:S-45
1469:S-43
1464:S-42
1459:S-41
1454:S-40
1449:S-39
1444:S-38
1439:S-37
1434:S-36
1429:S-35
1424:S-34
1419:S-33
1414:S-32
1409:S-31
1404:S-30
1394:S-28
1384:S-21
1379:S-20
1374:S-19
1369:S-18
1364:S-17
1359:S-16
1354:S-15
1349:S-14
1344:S-13
1339:S-12
1334:S-11
1329:S-10
1196:ISBN
1177:ISBN
1150:2019
1115:2024
1090:2024
1065:2024
1039:2024
1014:2013
992:2013
967:2019
932:2019
911:ISBN
887:2019
861:2024
824:2024
694:2 Ă—
422:S-56
261:The
241:HR2S
233:S-56
231:The
166:S-56
160:The
123:1956
52:Type
3383:HUS
3365:HUP
3347:HUM
3329:HUL
3306:HUK
3277:HJS
3259:HJP
3241:HJH
3223:HJD
3184:HRS
3166:HRP
3148:HRH
3130:HRB
3101:HTL
3083:HTK
3065:HTE
3036:HNS
2987:HOS
2969:HOK
2951:HOG
2933:HOE
2915:HOC
2886:HCH
2834:HSL
2810:USN
2704:H-5
2699:H-4
2672:H-2
2639:H-1
2174:H-9
2169:H-6
2164:H-5
2113:R-9
2108:R-8
2103:R-7
2098:R-6
2093:R-5
2088:R-4
2083:R-3
2078:R-2
2073:R-1
1936:HLH
1817:H-6
1812:H-5
1807:R-4
1542:XSS
1522:P2S
1507:JRS
1497:C-6
1324:S-9
1319:S-8
1314:S-7
1309:S-6
1304:S-5
1299:S-4
1294:S-3
1289:S-2
1284:S-1
601:at
590:in
575:at
560:in
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278:to
108:154
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