Quick Computation – Rules of Thumb

  • TAS = IAS + 3% per 2000 ft + 1% per (OAT – ISA) / 5
    Note: can approximate with 1% per 600 feet
  • KTAS ≈ M[600+1.22(T+35)], (T in centigrade)
  • True Altitude = Pressure Altitude * TISA / Tactual (hypsometric formula)
  • True Altitude = Indicated Altitude + (ISA Deviation × 4/1000 × (Indicated Altitude – Elevation))
  • True Altitude = (Indicated Altitude – Elevation) * Tactual / TISA + Elevation
  • Density Altitude = Pressure Altitude + 120 * ISA Deviation
  • Approach Rate of Descent (FPM) ≈ GS (knots) * 5
  • 3:1 Rule – 3 NM for each 1000 ft of descent
  • Altitude Drop / FPM = minutes
  • Minutes * 2 ≈ miles
  • Maximum crosswind ≈ 20% of a stall speed
  • Angle of Bank for rate one turn = TAS / 10 + 7 kt
  • Time to VOR: (60 * minutes between bearing) / degrees of bearing change
  • Distance to VOR: (TAS * minutes between bearing change) / degrees of bearing change
Enter your email for getting notifications about new posts
Loading

airports approaches ATPL BE76 C150/C152 C172 C182 Canada check checkride citabria complex CPL cross-country EASA endorsement Europe exam FAA FAA/EASA FI flight time Icaro IFR IR Italy landings logbook malfunction ME medical navigation night paperwork plans PPL rating skydiving tailwheel TCCA theory thoughts travel USA weather

Milestones

04/09/2017: My First Flight
04/25/2017: EASA PPL written exam (6 exams passed)
05/21/2017: Radio Operator Certificate (Europe VFR)
05/22/2017: EASA PPL written exam (all passed)
05/26/2017: The First Solo!
05/28/2017: Solo cross-country >270 km
05/31/2017: EASA PPL check-ride
07/22/2017: EASA IFR English
08/03/2017: 100 hours TT
12/04/2017: The first IFR flight
12/28/2017: FAA IR written
02/16/2018: FAA IR check-ride
05/28/2018: FAA Tailwheel endorsement
06/04/2018: FAA CPL long cross-country
06/07/2018: FAA CPL written
07/16/2018: FAA CPL check-ride
07/28/2018: FAA CPL ME rating
08/03/2018: FAA HP endorsement
06/03/2019: EASA ATPL theory (6/14)
07/03/2019: EASA ATPL theory (11/14)
07/15/2019: FAA IR IPC
07/18/2019: FAA CPL SES rating
08/07/2019: EASA ATPL theory (done)
10/10/2019: EASA NVFR
10/13/2019: EASA IR/PBN SE
11/19/2019: Solo XC > 540 km
12/06/2019: EASA CPL
12/10/2019: EASA AMEL
02/20/2020: Cessna 210 endorsement
08/30/2021: FAVT validation
05/27/2022: TCCA CPL/IR written
05/31/2022: Radio Operator Certificate Canada