acc. date	type	reg.	operator	fat.	location		dmg
3 Jan 1921	Avro 504K	G-CABP	Edmonton Aircraft Co Ltd	0	Edmonton, Alberta		w/o
3 Jan 1921	DUAL ENTRY	76	ERROR	0			w/o
4 Jan 1921	de Havilland DH-4B	153	US Air Mail Services	0	Gough Street, San Francisco, CA		w/o
5 Jan 1921	Curtiss F-5L	A-4294	US Navy	0	Caribbean Sea		w/o
6 Jan 1921	Curtiss JN-6H	AS-44844	US Army Air Service	2	Near Carlstrom Field, FL		w/o
9 Jan 1921	Aeromarine 40L	G-CABM			Tiptonville, TN		w/o
10 Jan 1921	Thulin Typ GA	S-16	Marinen, Swedish Navy	0	Askrikefjärden, Lidingö		w/o
15 Jan 1921	Aeromarine 75		Aeromarine Airways	0	Havana harbour		w/o
18 Jan 1921	de Havilland DH-4B	AS-68176			Post Field, Fort Sill, OK		w/o
19 Jan 1921	Bristol F.2b	H1658	20 Sqn RAF		Afghanistan
20 Jan 1921	de Havilland DH-4B	AS-63670			Stevens Pottery near Macon, GA		w/o
21 Jan 1921	FVM Ö1 Tummelisa	33	Swedish Air Force	0	Svensksund (Östergötland)		w/o
24 Jan 1921	Brandenburg C I	N-19	private				w/o
25 Jan 1921	Airco DH.4A	O-BAIN	Syndicat National pour l'Etude du Transport Aérienne	1	near the 'Valiant Sailor' Public House, Hope Farm, Folkestone, Kent		w/o
26 Jan 1921	Nieuport 23 C-1	603	Swiss Air Force	1	Dübendorf - LSMD		w/o
27 Jan 1921	RAF S E 5B	A8947	Royal Aircraft Establishment		Guildford, Surrey		w/o
28 Jan 1921	Royal Aircraft Factory S.E.5a	G-CYBY	Canadian Military		Camp Borden, ON		w/o
28 Jan 1921	de Havilland DH-4B	AS-63972			Weissenthurm, GER		w/o
28 Jan 1921	Curtiss JN-4	AS-27969			Kelly Field, TX		w/o
28 Jan 1921	Royal Airship Works ZR-2	R34	Royal Airship Factory	0	S of Guisborough, North Yorkshire		w/o
2 Feb 1921	Curtiss JN-6H	AS-45272			Just East of main field, March Field, CA		w/o
2 Feb 1921	Curtiss 18 Seagull	117	Cuerpo de Aviadores Navales	1	Callao		w/o
3 Feb 1921	de Havilland DH-4 Twin	130	US Air Mail Services	1	Mendota, MN		w/o
4 Feb 1921	de Havilland DH-4B	AS-63417			Langley Field, VA		w/o
4 Feb 1921	de Havilland DH-4B	AS-63709			Martinsville, IN		w/o
7 Feb 1921	Curtiss JN-4	G-CAAN			Winnipeg, MT		unk
7 Feb 1921	Royal Aircraft Factory S.E.5a	G-CYBP	Canadian Military		Beaton, BC		w/o
8 Feb 1921	Avro 504K	A-26	LA-KNIL	0	Kalidjati		w/o
9 Feb 1921	Royal Aircraft Factory S.E.5a	G-CYBQ	Canadian Military		Camp Borden, ON		w/o
9 Feb 1921	Junkers F13/Larsen JL-6	301	US Air Mail Service	3	La Crosse, WI		w/o
10 Feb 1921	Phönix D.II (J1)	945	Swedish Air Force	0	Malmen (Östergötland)		w/o
14 Feb 1921	de Havilland DH-4B	179	US Air Mail Services	0	Telephone Canyon, WY		w/o
15 Feb 1921	Breguet-Latécoère 14.A2	F-ALBA	Lignes Aériennes Latécoère	2	near Gibraltar		w/o
16 Feb 1921	airplane			1	Roma		w/o
17 Feb 1921	Curtiss JN-4HG	A-4152	US Marine Corps	2	Mirebalais		w/o
18 Feb 1921	Avro 504K	G-CYBK	Canadian Military	0	Camp Borden, Ontario		w/o
18 Feb 1921	Junkers F13	D-128	Lloyd Ostflug	2	near Lauenburg i.Pom.		w/o
18 Feb 1921	Aeromarine 40	42	Aviação Naval	1	Rio de Janeiro, RJ		w/o
18 Feb 1921	de Havilland DH-4 Twin	124	US Air Mail Services	0	Mendota, MN		w/o
19 Feb 1921	Nieuport 80E.2	8004	Aviação Militar	0	Guaratingueta		sub
20 Feb 1921	Avro 504K	G-CYCI	Canadian Military	0	Lake Simcoe, ON		w/o
20 Feb 1921	Airco DH 9A	E9691	30 Sqn RAF		in river at Karradesh, near Baghdad		w/o
20 Feb 1921	airplane			0	El Palomar		sub
21 Feb 1921	Sopwith	AS-0135			Kelly Field, TX		w/o
21 Feb 1921	de Havilland DH-4B	AS-63456			St Edwards College, Austin, TX		w/o
22 Feb 1921	unknown				Carlstrom Field, Arcadia, FL		w/o
22 Feb 1921	de Havilland DH-4B	67	US Air Mail Services	1	Elko, NV		w/o
23 Feb 1921	de Havilland DH-4B	AS-63456	US Army Air Service	2	Grounds of St Edwards College, Austin, TX.		w/o
23 Feb 1921	de Havilland DH.9		Fuerza Aérea de Chile	0	El Bosque		w/o
24 Feb 1921	Avro 504K	F8751	4 Sqn RAF	1	Cove, near RAF Farnborough, Hampshire, England		w/o
25 Feb 1921	Fokker D.VII	46	LA-KNIL	1	Schiphol Airport, Noord-Holland		w/o
25 Feb 1921	Parnall Panther	N7456	205 Sqn RAF		HMS Argus, at sea		sub
26 Feb 1921	Airco DH.4	O-BABI	Syndicat National pour l'Etude du Transport Aérien	0	Croydon Airport, Croydon, Surrey		w/o
1 Mar 1921	Curtiss JN-6H	AS-45199			Mongomery AID, Montgomery, AL		w/o
2 Mar 1921	Handley Page O/7	G-IAAC	Handley Page Indo-Burmese Transport	0	Meerut		w/o
3 Mar 1921	de Havilland DH.9	D1308	Fuerza Aérea de Chile	2	El Bosque		w/o
4 Mar 1921	Phönix D.II (J1)	943	Swedish Air Force	0	Randsfjorden (Norge)		w/o
4 Mar 1921	Caproni Ca.60 Noviplano		Caproni	0	Lago Maggiore		w/o
5 Mar 1921	Hansa-Brandenburg W-29	N-5	private	0			w/o
6 Mar 1921	Phönix C.I	N-16	private		Oslo ?		w/o
6 Mar 1921	Phönix D.III (J1)	935	Swedish Air Force	1	Hengsengen, Bygdö utanför Kristiania/Oslo (Norge)		w/o
7 Mar 1921	Curtiss JN-6H	AS-45056	US Army Air Service	2	Fort Knox, KY		w/o
10 Mar 1921	de Havilland D.H.10a Amiens IIIA	F8423	A&AEE Martlesham Heath	1	Gull Farm, Hasketon, near Woodbridge, Suffolk		w/o
11 Mar 1921	Nieuport-Spijker XI CI	NSP-236	LVA	0	Schiphol Airport, Noord-Holland		w/o
18 Mar 1921	Royal Aircraft Factory S.E.5a	G-CYBX	Canadian Military		Moorfield		w/o
21 Mar 1921	Sea Plane		Private	2	West Palm Beach, FL		w/o
22 Mar 1921	Avro 504K	G-CYCH	Canadian Military		Camp Borden, ON		w/o
23 Mar 1921	Connecticut Aircraft Company Observation Balloon	A-5597	United States Navy (USN)	5	Gulf of Mexico, 20 miles off St. Andrews Bay, Florida		w/o
24 Mar 1921	Sopwith Snipe	E8178	CFS RAF		near RAF Upavon, Wiltshire, England		w/o
25 Mar 1921	Fokker D1	FD..	Türk Hava Kuvvetleri	1	Eskişehir		w/o
31 Mar 1921	Airco DH.4A	D9383	Instrument Design Establishment	2	RAF Biggin Hill, Bromley, Kent, England		w/o
1 Apr 1921	Avro 504K	G-CYBD	Canadian Military		Camp Borden, ON		w/o
1 Apr 1921	Caudron G-3		Ejército Venezolano	0	Campo de Aviación Maracay		sub
2 Apr 1921	Curtiss JN-4H	AS-44864			Post Field, Fort Sill, OK		w/o
3 Apr 1921	Blériot-SPAD S.20	n/a	Simón Iturri Patiño	2+4	El Alto, La Paz		w/o
3 Apr 1921	airplane		Regia Aeronautica	1	Brucianesi (FI)		w/o
5 Apr 1921	Avro 504K	G-CYBS	Canadian Military		Camp Borden, ON		w/o
5 Apr 1921	Parnall Panther	N7470	Coastal Area Aircraft Depot RAF		ploughed field near Turnhouse, Scotland
5 Apr 1921	airplane		Spanish Army	1	Cuatro Vientos		w/o
6 Apr 1921	Avro 504K	H3021	1 FTS RAAF	2	1/2 mile N of Point Cook, Melbourne, VIC		w/o
7 Apr 1921	de Havilland DH-4	G-EAVL	Handley Page Transport	0	Cricklewood Aerodrome, Cricklewood, London		w/o
8 Apr 1921	Airco DH.9A	H81	30 Sqn RAF	0	Khidire		w/o
8 Apr 1921	Albatros B.IIa		Swedish Air Force	2	Haparanda (Norrbotten)		w/o
8 Apr 1921	Naval Aircraft Factory MF	5509	USN	1	San Diego Bay, CA		w/o
10 Apr 1921	Nieuport		Aeronáutica Militar	1	near Regueiro des Pontes, Leiria		w/o
12 Apr 1921	Bristol F.2b	E2298	208 Sqn RAF	2	Bilbeis, Egypt
12 Apr 1921	Bristol F.2b	D7831	208 Sqn RAF	2	Bilbeis, Egypt		w/o
13 Apr 1921	Avro 504K	G-CYCA	Canadian Military		Rugby		w/o
13 Apr 1921	Airco DH.9	O-BATE	S.N.E.T.A.	0	Le Bourget Airport, Val d'Oise 95		w/o
13 Apr 1921	Vickers Vimy	Unregistered	Chinese Government	0	Beijing		w/o
15 Apr 1921	Bristol F.2b	F4933	School of Army Co-Op RAF	2	Monxton, 3 miles West of Andover, Hampshire		w/o
15 Apr 1921	Curtiss ?		Curtiss ?	0	Ancón		sub
18 Apr 1921	Fokker C.I	522	LVA	0	Weesp, Noord-Holland		w/o
21 Apr 1921	de Havilland DH-4B	AS-63182			Post Field, Fort Sill, OK		w/o
22 Apr 1921	de Havilland DH-4B	160	US Air Mail Services	0	Mitchel Field, NY		w/o
23 Apr 1921	Caudron G-3		Ejército Venezolano	0	Campo de Aviación Maracay		min
26 Apr 1921	Salmson 2.A2.	F-CMAE	Compagnie des Messageries Aériennes	0	Lympne Airport, Lympne, Kent, England		sub
29 Apr 1921	de Havilland DH-4B	AS-62994			Camp Bragg, NC		w/o
29 Apr 1921	de Havilland DH-4B	196	US Air Mail Services	1	Cleveland, OH		w/o
3 May 1921	Caudron G-3		Ejército Venezolano	0	Campo de Aviación Maracay		sub