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                                                           A.P.4347F-P.N.
                                                            Pilot's Notes
                                 PART II
			     LIMITATIONS

     55.   Engine limitations-Avon 203
        (a)
Power rating Time limit R.p.m. J.p.t. °C.
*Take-off and
Operational
Necessity
10 mins.
(combined)
8,000±50 685
Intermediate 30 mins. 7,800 660
Max. continuous Unrestricted 7,600 630
Approach idling - 4,500
(min)
-
Ground idling Unrestricted AL.1
2,500
(min.)
±200
-
         *During climbs on the governor the governed speed maybe
         permitted to rise to 8,100 r.p.m. J.p.t. may be exceeded during
         hot re-slam accelerations and may be allowed to rise to 740°C
         for a period not exceeding 10 seconds.

    (b)  Airspeed limitations

         The engine is subject to the following airspeed limita-
         tions at 8,000 r.p.m.
Temperature
°C
Max. S/L
Mach. No.
Min. alt.
for 1.0M
Min. alt.
for 1.2M
-20 1.13 Sea Level 3,000 ft.
+15 1.0 Sea Level 8,500 ft.
+35 0.82 7,000 ft. 15,500 ft.

47

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