Appendix I – Self-sustaining powered sailplanes

CAA ORS9 Decision No. 1

(see CS 22.1(d))

1. Engine conditions & speeds

Two Conditions must be considered - 

(a) Engine extended and stopped (for cases related to engine idling). 

(b) Engine running at maximum power (for cases related to maximum continuous power, or all allowable power settings and also to CS 22.175(d)(5)).

2. Structure

CS 22.361(a)(1) is not applicable. 

3. Equipment

CS 22.1305 Power-plant instruments. 

(a) A tachometer or a suitable substitute - 

(1) A simple indication (e.g. a green light) that the engine is producing the power upon which the performance information is based; and 

(2) A simple indication (e.g. a red light) that the limiting engine r.p.m. has been reached except where it has been shown that the maximum engine r.p.m. cannot be exceeded at all speeds up to V_NE. 

(b) A fuel quantity indicator for each fuel tank. The installation of a simple device, e.g. a transparent tank, a sight gauge or a floating type of indicator is acceptable. 

(c) An oil temperature indicator or an oil temperature warning device (red light). (Except for two-stroke engines). 

(d) An oil pressure indicator or warning device (red light). (Except for two-stroke engines). 

(e) A cylinder head temperature indicator or warning device (red light) for each air-cooled engine when cowl flaps are fitted. 

(f) An elapsed-engine-time indicator is not required. 

(g) An oil quantity indicator, e.g. dipstick, unless the engine is a two-stroke type operating on pre-mixed fuel and oil.