Passenger Comfort Descent Planner
Descents planned around ears, not geometry: a 300–500 fpm cabin experience from cruise — when to start, how shallow, and the kids-asleep version.
Unpressurized physics: ear discomfort tracks the cabin's pressure-change rate, and 500 fpm down is the conventional comfort ceiling (descending hurts more than climbing — eustachian tubes vent more easily than they admit). Congested passengers and infants want 300.
Formula
⚠️ For flight planning and education only — verify with current charts, AFM and ATC clearances. Not for primary navigation.
Descents planned around ears, not geometry: a 300–500 fpm cabin experience from cruise — when to start, how shallow, and the kids-asleep version.
About Passenger Comfort Descent Planner
Airline passengers descend at 300–500 cabin-feet per minute regardless of what the airframe does — pressurization absorbs the geometry. Unpressurized GA passengers get the raw rate, and their ears keep the score. This planner inverts the usual descent math: choose the cabin experience (the comfort rate), and it derives when to start and how shallow the path becomes — the long, early, ear-friendly descent that distinguishes pilots whose passengers come back.
How to use Passenger Comfort Descent Planner
- 1Enter — sensible defaults are pre-filled so you see a worked result immediately.
- 2Read the live results: .
- 3Check the "With your numbers" line to see the formula time = Δalt ÷ comfort rate; TOD = time × GS — comfort fixes the rate, geometry follows substituted step by step.
- 4Adjust inputs (or flip the unit toggle) until the scenario matches yours, then copy or share the result.
Why use Passenger Comfort Descent Planner?
- ✓Instant, free and private — every calculation runs in your browser, nothing is uploaded
- ✓Built on the published formula time = Δalt ÷ comfort rate; TOD = time × GS — comfort fixes the rate, geometry follows with sources cited on the page
- ✓Unpressurized physics: ear discomfort tracks the cabin's pressure-change rate, and 500 fpm down is the conventional comfort ceiling (descending hurts more than climbing — eustachian tubes vent more easily than they admit). Congested passengers and infants want 300.
- ✓Switch units, tweak any input and watch every result update live
Frequently asked questions
Why do ears hurt more descending than climbing?+
Asymmetric plumbing: the eustachian tube vents excess middle-ear pressure passively on the way up, but reinflating the ear on descent requires the tube to open against a pressure differential — swallowing, yawning or a Valsalva. Below about 500 fpm of cabin descent most adults equalize passively; faster, and the differential builds quicker than casual swallowing clears it.
What changes for passengers with colds, or infants?+
Congestion narrows the tube: equalization that was automatic becomes effortful, then impossible — the painful 'ear block' that can last days (and, rarely, injure the eardrum). Infants can't perform a Valsalva and equalize by swallowing (feed on descent). For both, halve the rate: 300 fpm and a started-even-earlier descent. For acute sinus/ear infections, the honest answer is rescheduling.
How big is the TOD difference between comfort and standard descents?+
Large enough to need planning: losing 8,700 ft at 400 fpm takes nearly 22 minutes — at 130 knots, a 47-nm descent versus ~27 nm for the 3°/700-fpm version. The comfort descent starts before the destination's ATIS is receivable, which is exactly why it has to be a deliberate plan rather than an impulse at the usual TOD.
Does the shallow descent cost anything operationally?+
A little: more time at lower (bumpier, slower-TAS) altitudes, earlier exposure to terminal traffic, and in headwinds, added trip time. The trades favor it anyway whenever the cabin holds non-pilots — and the slow descent's power setting (modest reduction, engine warm) is mechanically kind. Pressurized aircraft make the whole question moot: the cabin controller flies the comfort rate while the airframe flies the geometry.
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