1	(as a prefix:) restricted airspace	R
2	radio altitude or radar altimeter	RA
3	resolution advisory (in the context of TCAS)	RA
4	Runway Awareness and Advisory System	RAAS
5	remote airport advisory service	RAAS
6	Receiver Autonomous Integrity Monitoring	RAIM
7	Weather Radar Reports[4]	RAREPS
8	rectified air speed	RAS
9	restricted area (temporary)	RA(T)
10	ram air turbine	RAT
11	remote communications outlet	RCO
12	reference datum height for ILS	RDH
13	Repair engineering order	REO
14	NaN	NaN
15	rescue and fire fighting	RFF
16	recreational flight instructor	RFI
17	reduction gear box	RGB
18	regulatory impact assessment (EASA)	RIA
19	required inspection items	RII
20	radio magnetic indicator	RMI
21	Radio Management Panel	RMP
22	rule making task (EASA)	RMT
23	area navigation	RNAV
24	required navigation performance	RNP
25	Recreational Pilot Licence	RPL
26	repetitive flight planning	RPL
27	regular public transport	RPT
28	Required	RQR
29	runway safety area	RSA
30	en-route surveillance radar	RSR
31	radiotelephony	RT
32	return to base	RTB
33	radiotelephony	RTF
34	rudder travel limiting	RTL
35	rejected take-off	RTO
36	regulatory take-off weight	RTOW
37	rotary variable differential transformer	RVDT
38	runway visual range	RVR
39	reduced vertical separation minima	RVSM
40	ramp weight	RW
41	runway	RWY

Index_R || Read ||

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