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Your medical. Crosschecked.

FAA guidance

Where our FAA information comes from

Your dates come from an FAA regulation. Medication answers come from the FAA's own documents. Here are the sources, with their dates and links to the FAA.

See every FAA document

Keeping current

How Crosscheck keeps up with the FAA

Crosscheck checks every FAA document it quotes against the FAA's current copy each week, and again on the days the FAA posts its monthly updates to the Guide for Aviation Medical Examiners. When the FAA changes a document, the answers that rest on it are marked until they have been checked again. Last checked .

  1. Step 1: Download the FAA's documents

    Crosscheck downloads each document on the list below, straight from faa.gov.

  2. Step 2: Keep a dated copy

    It notes the day it looked, and the FAA's own update date where the document prints one. When the text has changed, it saves a new copy with that day's date.

  3. Step 3: Compare it with the last copy

    It compares the new text with the previous copy and lists every document that changed.

  4. Step 4: The answers are updated from the new text

    The answers never change by themselves, and nothing is filled in from general knowledge. The FAA's new text is read in full, and the answers that rest on it are rewritten from the FAA's own words and checked against them before the change goes live.

  5. Step 5: A test checks every quote

    Each FAA quote in the medication check must appear in the newest saved copy of the document it cites. An automatic test checks this on every update to Crosscheck.

Reading an answer

How to read a medication answer

Each answer keeps the FAA's own words apart from Crosscheck's plain reading, so you can always tell which is which.

  1. The FAA's own wordFAA classification

    When the FAA document uses a classification word, the answer shows that word, marked as the FAA's. Other words you may see include CONDITIONALLY ACCEPTABLE and DO NOT ISSUE.

  2. Crosscheck's plain reading

    At the top of each answer, Crosscheck sums up the FAA's guidance in plain words. It is Crosscheck's summary, not the FAA's wording, so it always sits apart from the FAA's own word.

  3. The FAA's words

    The passage from the FAA document that the answer rests on, quoted. Choose Show the FAA's words to read it.

  4. The source and its dates

    The FAA document's name, linked to the FAA's page, with the date the FAA updated it and the date Crosscheck checked it.

ACE inhibitors and ARBs for migraine prevention

With conditions

Taken for: Migraine prevention

FAA guidance: Acceptable with conditions.

FAA classification: CACI ACCEPTABLE

The FAA lists ACE inhibitors such as lisinopril, and ARBs, as CACI-acceptable migraine prevention medication with a seven-day ground trial when starting. The FAA says the list is not all inclusive for individual medications in a noted class, and that a ground trial must verify no adverse effects and effectiveness from the medication before initial consideration.

Must have ground trial to verify no adverse effects and effectiveness from medication prior to initial consideration. | CACI ACCEPTABLE – Migraine Prevention (Prophylaxis). This list is not all inclusive for individual medications in a noted class. | Angiotensin-converting enzyme (ACE) inhibitors: lisinopril (Prinivil; Qbrelis; Zestril), 7 days, None. Angiotensin II Receptor Blockers (ARB), 7 days, None

Source: FAA, Migraine Medication · FAA updated 26 August 2026 · checked 14 October 2026

When the FAA names the class, not the medication

If the FAA document names a class of medications but not the one you typed, the answer says so.

When a medication is not addressed

Not addressed means the FAA documents Crosscheck reads don't mention it. It does not mean acceptable. The same is true when the documents cover a medication, but not the reason you take it. Ask your examiner.
If the FAA documents Crosscheck reads don't mention a medication, the answer says:

Not in the FAA lists Crosscheck reads.

This does not mean the medication is acceptable. The FAA states that its medication guidance is not all-inclusive and that inclusion or exclusion alone should not be independently interpreted as approval.

Crosscheck reports what the FAA has published. Your examiner and the FAA make the decisions.
Open the medication check

The documents

The FAA documents Crosscheck reads

314 documents, all from faa.gov. It includes every FAA document cited in Check a medication, Get ready for my exam and My documents.

FAA updated is the date the FAA prints on the document. Checked is the last day Crosscheck downloaded it and compared it with its saved copy.

Each link opens the FAA's own page in a new tab. Crosscheck is not affiliated with or endorsed by the FAA.

FAA pages for pilots

What the FAA tells pilots about getting a medical, MedXPress and medications. 7 documents.

Medication pages for examiners

Pages and tables on medications from the FAA Guide for Aviation Medical Examiners, and the Guide's index of them. 33 documents.

Do Not Issue and Do Not Fly lists

The FAA's overview of the two lists, and the lists themselves with the FAA's general no-fly wait times. 2 documents.

Condition pages and tables

The Guide's pages on each condition, with the FAA's disposition tables, CACI worksheets and AASI sheets for them. 267 documents.

Special Issuance and AASI

The Guide's general pages on Special Issuance and on AASI. 5 documents.
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