Reactive Airways Dysfunction Syndrom (RADS)


PEB Forum Regular Member
Registered Member
Hello everyone - new join here.

I was diagnosed with RADS following an Oxygen failure in a fighter jet. I've since been grounded from flying and it doesn't look promising that I'll ever return (be found unfit to fly fighter aircraft again). I've taken multiple Pulmonary Functions Test and my FEV1 and FEV1/FVC percentage numbers are in the 80% range. However, my FEV 25-75% number is typically between 50-60% rating. I'm on daily inhaled Corticosteroids and have been on and off prednisone burst 4 times over the past 9 months following the mishap.

I've seen 3 different Pulmonologist 1x military and 2x civilian and I've been told the FEV1 number is a reflection of large airways and is not applicable in my case (since I'm not an asthmatic, have emphysema or COPD) and is not used to explain the numerous asthmatic like symptoms I have. However the FEV 25-75% number (which is poor in my case) indicates moderate to severe small airways damage/disease following my mishap. I'm scheduled for an Oscillometry test next week to further assess small airways damage.

So... I can't find any disability or medical ratings associated with my condition and the FEV 25-75% numbers... everything I've read is associated with the FEV1 numbers. Mine are fine and that is not my issue. Looking for info on what I can expect disability ratings wise. Looks like I might be going the medical retirement route and trying to get my head around all this.

I've attached my most recent PFT results for reference.

Thanks in advance for any help and recommendations!



Well-Known Member
PEB Forum Veteran
Registered Member
Take a look here: eCFR — Code of Federal Regulations

Although you're not diagnosed with Asthma (6602), the treatments you're receiving fall in line with the 60% rating. This is just pure speculation though. I'm not a claims guy. Others may have a better read on what your percentage could be.


PEB Forum Regular Member
Registered Member
Looking for eCFR Respiratory Disability Ratings interpretation help.

4.97-5 / 6602 Asthma, Bronchial ratings:

FEV-1 of 40- to 55-percent predicted, or; FEV-1/FVC of 40 to 55

percent, or; at least monthly visits to a physician for required

care of exacerbations, or; intermittent (at least three per year)

courses of systemic (oral or parenteral) corticosteroids...................... 60

FEV-1 of 56- to 70-percent predicted, or; FEV-1/FVC of 56 to 70

percent, or; daily inhalational or oral bronchodilator therapy,

or; inhalational anti-inflammatory medication.................................... 30

I completed a Methacoline Challenge test and my FEV1/FVC 66-precent predicted.

Based on the above rating I fall in the 30% disability rating for FEV-1/FVC percent being between 56-70. However, I have also been required to take interment courses of systemic oral corticosteroids 4-times in the past 10-months, which puts me in the 60% rating category based on how I am reading the rating schedule.

Is my interpretation correct?


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