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FAA · IRA · Cheat sheet

Instrument Rating Airplane (IRA) Knowledge Test cheat sheet

A one-page summary of the IRA knowledge areas (FAA-S-ACS-8C).

Regulations and planning

  • Currency: 6 approaches, holding, intercept/track in 6 calendar months; then IPC
  • Alternate needed unless ±1 hr ETA: 2,000 ft ceiling and 3 SM
  • Alternate minimums 600-2 precision, 800-2 nonprecision; reserve 45 min

Equipment

  • VOR check every 30 days: VOT ±4°, airborne ±6°, dual ±4°
  • Altimeter/static and transponder every 24 calendar months
  • Vacuum failure → attitude and heading gyros; use turn coordinator and compass

ATC and navigation

  • Clearance: CRAFT; standard hold right turns, 1-min legs ≤ 14,000 MSL
  • Holding speeds: 200 KIAS ≤ 6,000; 230 to 14,000; 265 above
  • DME slant-range error greatest high and close; RAIM checks GPS integrity

Approaches and emergencies

  • DA for precision, MDA for nonprecision; descend only with runway environment
  • Contact approach: pilot request, 1 SM, clear of clouds
  • Lost comm: route AVEF; squawk 7600; in VFR land as soon as practicable

Test yourself on IRA

Reading a summary is the easy part. Take the free 10-question diagnostic to see which of these domains you actually have, then drill the rest.