OPERATING LIMITATIONS

OPERATING LIMITATIONS, PERFORMANCES AND FUEL CONSUMPTION

For oil pressures and minimum temperature, see Leading Particulars. Powers subject to a tolerance of minus 4 per cent.

With a fixed-pitch propeller it is not possible to obtain all these conditions but none of the operating limitations may be exceeded.

Gipsy Major 10, Mark 1-1, 1-IA, 1-3, l-3A, 1-7 and 1-7A (Based on Engine Technical Certificate No. SS, issue 6, 25-1-55)
Flying conditions	Time limitation	R.P.M.	Boost pressure in. Hg. cm. Hg.	Cyl. temp, deg. C.	Oil temp, deg. C. Oil grade* D. Eng. R.D.2472 B/O	B.H.P. at Sea Level	Fuel consumption (upper limit)
							Galls, per hr.	Litres per hr.
Maximum take-off Maximum emergency	-- 5 min.	2400 2550	Full Throttle	240	100	136/142 145	11¼ 11½	51,11 52,25
Climb Emergency cruise	60 min. --	-- 2400	Full Throttle	230	85	136/142	11¼	51,11
Maximum cruise	--	2300	Minus 1½ Minus 3,8	210	85	138	10	48,9
Maximum cruise, weak	--	2300	Minus 4 Minus 10,2	210	85	120 3750 ft. 1143 m.	8½	38,62
Maximum overspeed	20 sec.	2675	Full Throttle	--	--	--	--	--
Gipsy Major 10, Mark 2 and 2-1. (Based on Engine Technical Certificate No. 89, issue 7, 12-1-56)
Flying conditions	Time limitation	R.P.M.	Boost pressure in. Hg. cm. Hg.	Cyl. temp, deg. C.	Oil temp, deg. C. Oil grade* D. Eng. R.D.2472 B/O	B.H.P. at Sea Level	Fuel consumption (upper limit)
							Galls, per hr.	Litres per hr.
Maximum take-off Normal Emergency	5 min. 15 min.	2550	Full Throttle	255	100	139/145	11½	52,25
Minimum r.p.m. at maximum take-off boost pressure	--	2000	--	--	--	--	--	--
Maximum continuous	--	2400	Full Throttle	250	85	136/142	11¼	51,11
Maximum weak mixture	--	2300	Minus 4 Minus 10,2	230	85	120 3750 ft. 1143 m.	9	40,89
Maximum overspeed	20 sec.	2675	Full Throttle	--	--	--	--	--

For information regarding the use of lubricating oils see page vii.