IJA Air Force aircraft data 1941-45 (strength, losses, distribution, serviceability)

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IJA Air Force aircraft data 1941-45 (strength, losses, distribution, serviceability)

Data tables below are based on the several tables from the IJA report “Army Air Force Aircraft Supply and Loss Statistics, November 1941 - 1945” (陸軍航空部隊　飛行機補給損耗統計　昭和１６．１１～２０), made in late 1945. Tables are mostly bilingual, small parts in Japanese were translated by me. Original format of the tables mostly preserved. Obvious errors in adding numbers are corrected (corrected numbers are written in italics).

Note, that the data in tables is obviously rounded to the nearest “5”, “10” or even more. Calculations sometimes poorly made, so data in one table can contradict with data in another table. Nevertheless, those tables still give useful overall picture of the strength, losses, distribution and serviceability of the IJA Air Force aircraft.

This data can be compared with Data on IJN pilots and planes 1941-1945, I’ve also published on my web site.

Eugen Pinak

							AIRCRAFT STRENGTH OF THE IMPERIAL JAPANESE ARMY AIR FORCE
	Aircraft assigned to tactical units					Aircraft assigned to training units								Reserves				GRAND
Date					Combat aircraft			Trainers										TOTAL
	Fighters	Bombers	Other	TOTAL	Fighters	Bombers	Other	Advance	Elementary	TOTAL	Fighters	Bombers	Other	Advance	Elementary	Transports	TOTAL
7 December 1941	550	720	300	*1570*	300	250	150	300	1200	2200	340	390	110	30	70	50	*990*	*4760*
1 August 1942	1080	760	320	2160	460	310	200	470	1300	2740	300	300	160	50	150	30	990	5890
1 August 1943	1315	940	385	2640	1000	600	300	650	1650	4200	550	370	200	150	100	40	1410	8250
1 March 1944	1740	860	450	3050	1200	700	400	700	1800	4800	1000	380	220	200	100	80	1980	9830
1 August 1944	2400	600	500	3500	1500	650	350	1060	2050	5610	1100	410	140	250	200	100	2200	11310
31 August 1945	2240	580	3330	6150	550	250	100	500	1130	2530	110	30	200	20	30	30	*420*	*9100*
			[2800 of those "Other" are kamikaze aircraft, mainly from training units]
NOTE. Aircraft in the "Reserves" category were:
1.Aircraft in air arsenals/depots in Japanese Islands, including freshly delivered aircraft, aircraft undergoing repair, aircrafts waiting to be repaired;
2.Spare aircraft assigned to air armies and smaller units/formations.

`		DISTRIBUTION OF THE AIRCRAFT OF THE IMPERIAL JAPANESE ARMY AIR FORCE BY REGIONS (TACTICAL UNITS ONLY)

Date\ Region		Japan	Manchuria	Taiwan (Formosa)	China	French Indo-China	Malaya	Burma and Thailand	Java and Sumatra	Philippines	New Guinea	GRAND TOTAL
Date\ Region		Japan	Manchuria	Taiwan (Formosa)	China	French Indo-China	Malaya	Burma and Thailand	Java and Sumatra	Philippines	New Guinea	GRAND TOTAL
7 December 1941	Fighters	50	200	40	60	200						550	1570
	Bombers		220	140	40	320						720
	Other	20	50	80	40	110						300
	TOTAL	70	470	260	140	630						1570
1 August 1942	Fighters	360	450		90		40	100	40			1080	2160
	Bombers	40	300		100			180	40	100		760
	Other	40	60		40		30	70	30	50		320
	TOTAL	440	810		230		70	350	110	150		2160
1 August 1943	Fighters	450	335				210		70		250	1315	2640
	Bombers	110	320		120		120		90		180	940
	Other	40	140		40		60		45	20	40	385
	TOTAL	600	795		160		390		205	20	470	2640
1 March 1944	Fighters	550	210		230				400		350	1740	3050
	Bombers	150	180		140				190		200	860
	Other	40	160		85				75	30	60	450
	TOTAL	740	550		455				665	30	610	3050
1 August 1944	Fighters											2400	3500
	Bombers											600
	Other											500
	TOTAL											3500
15 August 1945	Fighters	1750	70	50	70	300						2240	6150
	Bombers	300	30	30	20	200						580
	Other	2530	200	140	40	420						3330
	TOTAL	4580	300	220	130	920						6150

					AIRCRAFT LOSSES OF THE IMPERIAL JAPANESE ARMY AIR FORCE
Date	Lost in combat				Destroyed on the ground				Operational losses by tactical units				Ferrying losses				Losses by training units	GRAND TOTAL
	Fighters	Bombers	Other	TOTAL	Fighters	Bombers	Other	TOTAL	Fighters	Bombers	Other	TOTAL	Fighters	Bombers	Other	TOTAL
December 1941 - July 1942	100	400	200	700	110	300	280	690	20	50	30	100	30	50	20	100	610	2200
August 1942 - July 1943	740	500	200	*1440*	400	530	590	1520	100	60	70	230	150	60	50	260	990	4440
August 1943 - March 1944	500	500	200	1200	200	570	370	1140	80	50	60	190	120	80	40	240	470	3240
April 1944	70	10	20	100	200	100	100	400	30	10	20	60	50	20	20	90	150	800
May - July 1944	1300	290	150	1740	400	300	250	950	100	20	50	170	200	30	30	260	330	3450
August 1944	100	40	40	180	150	120	70	340	25	15	15	55	35	15	10	60	150	*785*
September 1944	150	30	60	240	140	100	60	300	25	15	15	55	55	15	10	80	160	835
October 1944	400	140	60	600	140	90	60	290	60	20	20	100	100	30	20	150	160	1300
November 1944	350	70	80	500	130	80	60	270	80	20	20	120	140	30	30	200	150	1240
December 1944	150	50	60	260	150	80	70	300	50	30	20	100	60	20	20	100	140	900
January 1945	120	10	20	150	90	60	50	*200*	30	15	15	60	70	10	20	100	120	630
February 1945	100	30	20	150	70	50	80	*200*	20	10	10	40	40	10	10	60	100	*550*
March 1945	100	30	20	150	100	150	80	330	20	10	10	40	30	10	10	50	80	650
April 1945	250	80	100	430	60	90	50	200	30	10	10	50	60	20	15	95	80	855
May 1945	120	30	50	200	100	100	90	290	30	10	10	50	40	10	10	60	100	700
June 1945	90	20	40	150	70	70	60	*200*	20	10	10	40	20	10	10	40	120	550
July 1945	80	30	20	130	30	30	100	*160*	20	10	10	40	15	5	10	30	100	*460*
August 1945	40	20	40	100	30	30	45	*105*	5	5	5	15	10	5	5	20	50	*290*
GRAND TOTAL	4760	2280	1380	8420	2570	2850	2465	*7885*	745	370	400	1515	1225	430	340	*1995*	4060	*23875*

AVERAGE ANNUAL AIRCRAFT SERVICEABILITY RATES OF THE IMPERIAL JAPANESE ARMY AIR FORCE UNITS, percent of the total strength
Year \ Region		Japan	Manchuria and China	South-East Asia	Philippines
Year \ Region		Japan	Manchuria and China	South-East Asia	Philippines
1941	Fighters	70	70
	Bombers	75	70
	Other	80	75
1942	Fighters	70		70
	Bombers	70		75
	Other	75		55
1943	Fighters	65	68	70
	Bombers	73	70	70
	Other	75	80	50
1944	Fighters	60	65	60	40
	Bombers	70	70	60	60
	Other	70	73	60	60
1945	Fighters	45	60	42
	Bombers	65	75	70
	Other	60	70	70