AIM ¶ 4-6-4 — RVSM Flight Plan Filing
Per AIM 4-6-4, learn how to file the correct equipment suffix (/W) on FAA and ICAO flight plans for RVSM airspace clearance and ATC separation.
AIM 4-6-4 explains how to correctly file flight plans for operations in Reduced Vertical Separation Minimum (RVSM) airspace (FL290–FL410). Filing the wrong equipment suffix can get your clearance denied.
Key points:
- Only annotate RVSM capability after confirming both the operator is authorized (OpSpec/MSpec/LOA) and the aircraft is RVSM-compliant.
- Under Part 91 Appendix G, Section 9, you may operate RVSM in U.S. airspace without specific authorization and file "/W".
- To operate RVSM outside U.S. airspace, you must hold an OpSpec/MSpec/LOA before filing "/W".
- On the FAA flight plan, only one equipment suffix goes in Block 3 (from Appendix 4, TBL 4-2/4-3).
- On the ICAO flight plan, file "/W" in Block 10 for RVSM authorization, plus appropriate nav/comm suffixes.
ATC uses the suffix to issue or deny RVSM clearance, apply 2,000-foot vertical separation to non-RVSM accommodated aircraft, and identify Advanced RNAV capability. Important: writing "NON-RVSM" in Field 18 (Remarks) does not override a "W" in Field 10 — to indicate non-RVSM, the "W" must be removed from Field 10.
Five FAA-written-style questions. Instant explanations, every answer cites its source — no account needed.
You are flying VFR in Class E airspace at 8,500 feet MSL during the day. What are your minimum visibility and cloud clearance requirements?