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Dr. Petra Illig, MD, AME

Dr. Petra Illig in an airplane.

Dr. Petra Illig is a board-certified emergency physician turned aviation and aerospace medical specialist. She holds her medical degree from the University of Washington School of Medicine and has served as a designated Aviation Medical Examiner (AME) for the Federal Aviation Administration since 1984.

With more than 30 years in aeromedical practice, she has advised commercial air carriers, general aviation pilots and emerging commercial space-flight operators on physiological risks in high-altitude, low-humidity and pressurized cabin environments.

Dr. Illig is also a licensed pilot who routinely flies a tail-wheel aircraft, giving her first-hand understanding of cockpit and cabin operational realities.

At her Anchorage-based clinic, she reviews complex medical certification cases, including FAA “special-issuance” determinations for aircrew.

She has co-authored aerospace medicine chapters and research-based articles on cabin environment topics – including the effects of cabin humidity on crew and passenger health.

On Kuvola, she writes about cabin air humidity, dry-air risks in the aircraft environment and evidence-based mitigation strategies.

Her work helps professional and frequent flyers alike understand how micro-environmental conditions aboard aircraft can affect skin, mucous membranes, sleep, performance and long-haul recovery.

Learn About Travel Wellness

View of soft clouds from an airplane window at cruising altitude
cabin humidity

How to Combat Dry Air on a Plane: A Flight-Day Plan

A ranked flight-day plan for dry cabin air, ordered by what each step acts on: the air you breathe, your nose, your lips, and your hydration.

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Layered clouds under a pale sky seen from an aircraft window at sunrise
cabin humidity

Dry Lips After Flying: Why It Happens and How to Prevent It

Why lips chap on a plane and the simple routine that keeps them comfortable, from the gate to the hotel.

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Airplane tray table with a plastic cup of water, snack packets, reading glasses and a phone
cabin humidity

Why Does Food Taste Bland on a Plane? What You Can Fix

Dry cabin air, low pressure and engine noise all dull taste at altitude. Here is which flavors fade, which hold up, and what travelers can do about it.

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Airplane wing above a soft layer of pale clouds in muted grey light
cabin humidity

HumidiFlyer Alternative: 5 Ways to Moisten Cabin Air

Compare five ways to get moister air on a plane, from another HME mask to saline spray, with the honest limits of each.

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View of clouds through a gray airplane cabin window
dry cabin air

Mouth Taping on a Plane: Is It Safe, and Does It Help?

Mouth taping on a plane can ease dry mouth for some healthy travelers, but dry cabin air can block the nose. What the research says, who should skip it, and what works better.

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Layered clouds seen through an airplane window at cruising altitude
Airbus A350

Which Planes Have the Most Humid Cabins? A Seat-by-Seat Guide

The Boeing 787 and Airbus A350 keep the most humid cabins, and economy is often damper than first class. Here is how aircraft type, seat and airline change the air you breathe.

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