FAA DOT Drug Testing Services for Aviation Safety Nationwide

FAA Drug & Alcohol Testing — Requirements, Compliance & Nationwide Testing for Aviation

Who Must Be Tested

FAA drug and alcohol testing applies to anyone performing a safety-sensitive function, as defined in 14 CFR §§ 120.105 and 120.215. The determination is based on the duties performed, not the employee's job title.

Covered safety-sensitive functions include:

• Flight crewmember duties
• Flight attendant duties
• Flight instruction duties
• Aircraft dispatcher duties
• Aircraft maintenance or preventive maintenance duties
• Ground security coordinator duties
• Aviation screening duties
• Air traffic control duties (for facilities not operated by the FAA or the U.S. military)
• Operations control specialist duties

Coverage applies regardless of employment status, including full-time, part-time, temporary, and intermittent employees. It also extends to contractors and subcontractors at any tier who perform a safety-sensitive function on an employer's behalf.

A supervisor is not subject to testing solely for supervising these duties unless they also perform the safety-sensitive function on an intermittent or part-time basis. Foreign air carriers operating employees within the United States must also comply with the FAA's alcohol testing rules.

The Six Required Test Types

Every FAA-compliant drug and alcohol testing program must conduct the following six testing events required under 14 CFR Part 120:

• Pre-employment. A verified negative drug test result is required before an individual begins performing—or is transferred into—a safety-sensitive function.
• Random. Unannounced testing conducted throughout the year, with every covered employee having an equal chance of selection during each testing cycle.
• Reasonable Suspicion. Ordered when a trained supervisor observes specific, contemporaneous physical, behavioral, or performance indicators consistent with drug or alcohol use.
• Post-Accident. Required following certain FAA-defined accidents and incidents. Drug testing must occur as soon as possible and no later than 32 hours after the event. Alcohol testing must be attempted within 2 hours, with continued attempts for up to 8 hours if necessary. If testing cannot be completed, the employer must document the reason.
• Return-to-Duty. Required before an employee who has violated FAA drug and alcohol testing rules may resume safety-sensitive duties. The test must be conducted under direct observation.
• Follow-Up. A series of unannounced, directly observed tests following a return to duty, directed by a Substance Abuse Professional (SAP). Follow-up testing may continue for up to 60 months.

FAA Random Testing Rates & Consortium Enrollment

The FAA establishes minimum annual random testing rates based on industry-wide positive test rates. The current minimum annual testing rates are:

• 25% of covered employees for drug testing.
• 10% of covered employees for alcohol testing.

The FAA Administrator reviews these rates annually and may adjust them based on industry data. Any changes are published in the Federal Register each December. Employers are expected to make reasonable, good-faith efforts to meet the applicable annual testing rate and must document any circumstances that prevent full compliance.

Most small and mid-sized aviation employers satisfy this requirement by joining a Consortium/Third-Party Administrator (C/TPA). A consortium combines employees from multiple employers into a single random testing pool, ensuring statistically valid random selections even for organizations with only a few safety-sensitive employees.

US Health Testing manages random pool enrollment, quarterly selections, and ongoing compliance support to help keep your FAA drug and alcohol testing program audit-ready throughout the year.

What's Tested

FAA drug testing uses the DOT 5-panel urine drug test, which screens for:

• Marijuana (THC)
• Cocaine
• Opiates
• Phencyclidine (PCP)
• Amphetamines (including methamphetamine)

Testing follows the same DOT laboratory certification, chain-of-custody, and Medical Review Officer (MRO) verification procedures required under 49 CFR Part 40. Although oral fluid testing has been authorized by the DOT, urine remains the standard specimen for FAA-regulated testing. Employers should confirm laboratory certification before implementing oral fluid collections.

Alcohol testing is conducted using Evidential Breath Testing (EBT) equipment by a trained and certified Breath Alcohol Technician (BAT). FAA alcohol testing thresholds include:

• 0.02 to 0.039 BAC: The employee must be removed from safety-sensitive duties until their next regularly scheduled shift (no sooner than 8 hours) or until their alcohol concentration falls below 0.02.
• 0.04 BAC or greater: Considered a violation of FAA regulations and treated the same as a verified positive drug test.

Marijuana remains prohibited under FAA and DOT regulations regardless of state legalization. Employees may also be at risk from CBD products, as items labeled "THC-free" have been found to contain enough THC to produce a positive drug test.

Program Roles Explained

Setting Up an FAA-Compliant Program

Every FAA-regulated employer or contractor must register its drug and alcohol testing program before beginning operations or allowing employees to perform safety-sensitive duties.

Registration requirements vary depending on the type of aviation operation:

• Operations Specification (A449): Required for Part 121 and Part 135 operators, and Part 145 repair stations that conduct their own testing program. Registration is completed through the employer's FAA Principal Operations or Maintenance Inspector.
• Letter of Authorization (A049): Required for air tour operators operating under 14 CFR §91.147. Issued through the local Flight Standards District Office (FSDO).
• Drug & Alcohol Testing Program Registration: Required for other covered contractors and non-FAA air traffic control facilities through the FAA Office of Aerospace Medicine, Drug Abatement Division.

In addition to testing, every FAA-compliant program must include:

• An Employee Assistance Program (EAP) providing education on drug and alcohol misuse.
• Supervisor training consisting of 60 minutes on recognizing drug use indicators and an additional 60 minutes on recognizing alcohol misuse.
• A written drug and alcohol testing policy distributed to employees.
• Annual Management Information System (MIS) reporting by March 15 for employers with 50 or more covered employees, or whenever requested by the FAA.

US Health Testing works alongside your Designated Employer Representative (DER) to establish and maintain a fully compliant FAA drug and alcohol testing program, including registration, random pool management, training support, and regulatory reporting.

After a Positive Test or Refusal

A verified positive drug test or refusal to test triggers immediate consequences under FAA regulations (14 CFR Part 120). Employers must promptly remove the employee from performing any safety-sensitive duties and follow the required return-to-duty process before the individual may resume covered functions.

The required steps include:

• Immediate Removal: The employee must be immediately removed from all safety-sensitive duties.
• Reporting: The employer or Medical Review Officer (MRO) must report the verified positive test or refusal to the FAA Drug Abatement Division within two working days. If the employee holds a pilot certificate, the violation must also be reported to the Pilot Records Database (PRD).
• SAP Evaluation: A qualified Substance Abuse Professional (SAP) must evaluate the employee and recommend appropriate treatment or education.
• Return-to-Duty Testing: Before returning to safety-sensitive duties, the employee must successfully complete a directly observed return-to-duty test with a verified negative drug result or an alcohol concentration below FAA thresholds.
• Follow-Up Testing: The employee must complete a series of unannounced, directly observed follow-up tests as directed by the SAP. Follow-up testing may continue for up to 60 months.

Employers are not required to reinstate an employee following a violation or pay for treatment. Those decisions are governed by company policy and applicable labor agreements.

FAA regulations also permanently prohibit an employee from returning to the same safety-sensitive duties after two verified positive FAA-required drug tests occurring after September 19, 1994.

Employees who voluntarily disclose a substance abuse problem before being notified of a required test are subject to company policy rather than an automatic FAA testing requirement. However, once an employee has been notified of a required test, failure to complete the test is treated as a refusal.

Recent Regulatory Update

Last Reviewed: July 2026

On February 27, 2026, the U.S. Court of Appeals for the D.C. Circuit ruled that the FAA cannot automatically accept an employer's determination that an employee refused a drug or alcohol test — the agency is now required to independently review that determination before it stands. The case arose from a pilot who was unable to return from overseas for a random test due to a medical condition and was classified as a refusal by his employer.

What this means for employers: document every refusal determination thoroughly, including the specific circumstances and any communication with the employee, since these records may now be subject to FAA review rather than accepted at face value. We'll continue to update this section as the ruling's implementation develops.

FAA Testing by Role

Why Choose US Health Testing for FAA Compliance?

• Nationwide network of SAMHSA-certified collection sites for convenient employee testing.
• Partnerships with Labcorp and Quest Diagnostics for accurate, court-defensible laboratory testing.
• Medical Review Officer (MRO) review and verification on every DOT-regulated drug test.
• Comprehensive random testing pool management for employers of every size, including operators with only a few covered employees.
• Expert Designated Employer Representative (DER) support for program setup, regulatory compliance, reporting, and ongoing FAA requirements.

US Health Testing provides end-to-end FAA drug and alcohol testing services designed to help aviation employers remain compliant, reduce administrative burden, and maintain a safe, drug-free workplace.