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NTSB Reports Rising Drug Presence Among Fatally Injured Pilots 2018-2022

NTSB study reveals 52.8% of fatally injured U.S. pilots tested positive for drugs from 2018-2022, highlighting trends in aviation safety.

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Photo: NTSB

This article is based on an official press release from the National Transportation Safety Board (NTSB).

NTSB Study Reveals Upward Trend in Drug Presence Among Fatally Injured Pilots

On May 14, 2026, the National Transportation Safety Board (NTSB) released a comprehensive safety research report detailing toxicology results from U.S. civil Incident accidents. The study, titled “2018–2022 Update to Drug Use Trends in Aviation,” analyzed data from 930 pilots who were fatally injured during that five-year period. According to the NTSB press release, the findings highlight a continuing, long-term upward trend in the detection of various medications and substances in aviation accidents.

The most striking statistic from the NTSB’s updated research is that more than half of the fatally injured pilots, 52.8%, tested positive for at least one drug of any type. Furthermore, 27.7% of the pilots tested positive for two or more drugs. While these figures encompass a wide range of substances, including common, non-impairing medications like cholesterol-lowering drugs and cardiovascular prescriptions, the data also points to a rise in the use of potentially impairing substances.

However, the NTSB strongly cautions against jumping to conclusions regarding crash causality. The agency emphasizes that the presence of a drug in post-mortem toxicology testing does not automatically establish that the pilot was impaired while flying, nor does it confirm that the substance contributed to the Accident.

Breaking Down the Toxicology Data

Potentially Impairing and Illicit Substances

While the overall 52.8% figure includes benign medications, the NTSB report isolates data concerning substances that pose a direct risk to aviation safety. According to the study, 28.6% of the fatally injured pilots tested positive for drugs classified as “potentially impairing.” This category encompasses certain prescription medications, controlled substances, illicit drugs, and over-the-counter (OTC) medications.

Notably, the most common potentially impairing substance detected was diphenhydramine. This active ingredient is widely available in over-the-counter allergy and cold medications, such as Benadryl and Unisom. Because it is easily accessible, pilots may underestimate its sedating effects, making it a persistent factor in aviation toxicology reports for over a decade.

In addition to OTC medications, the NTSB noted an increase in the detection of illicit drugs. The study found that 7.4% of the pilots tested positive for illicit substances, a rise driven primarily by the detection of delta-9-THC, the primary psychoactive chemical found in marijuana.

Professionalism and Certification Factors

The General Aviation Divide

The NTSB research highlights a clear demographic and operational divide regarding drug prevalence. The data indicates that drug presence is significantly lower among professional pilots operating under stricter regulatory oversight compared to those in general aviation.

According to the report, pilots conducting Part 135 operations, which include commuter and on-demand flights such as corporate charters and air taxis, exhibited a lower drug presence than pilots operating under Part 91 general aviation rules. Furthermore, pilots holding Airline Transport Pilot (ATP) and Commercial certificates had lower drug detection rates than those holding private, sport, or student certificates, or those flying without any certificate at all.

Medical certification also played a crucial role. The NTSB found that pilots holding an active Federal Aviation Administration (FAA) medical certificate had a lower rate of drug presence than those flying without one, underscoring the effectiveness of routine medical evaluations in the professional aviation sector.

Understanding the Findings: Presence vs. Impairment

AirPro News analysis

When analyzing the NTSB’s findings, we must draw a distinct line between “drug presence” and “active impairment.” Toxicology tests, particularly post-mortem examinations, detect inactive metabolites that can remain in blood or tissue long after a drug’s psychoactive or impairing effects have dissipated. This is especially true for substances like THC and certain long-lasting prescription medications.

The NTSB’s stated purpose for this study is to document trends and provide context for factors that may affect aviation Safety, rather than to assign direct causality to these drugs in specific crashes. However, the persistent presence of diphenhydramine highlights a critical gap in pilot education regarding self-medication.

The FAA maintains strict guidelines regarding over-the-counter medications. Because diphenhydramine has a long half-life and known sedating properties, the FAA advises that pilots must wait at least 60 hours, calculated as five times the drug’s half-life, after their last dose before resuming flying duties. The fact that this specific antihistamine remains the most detected potentially impairing drug suggests that many general aviation pilots are either unaware of the 60-hour rule or are failing to adhere to it.

Historically, the trend is moving in a concerning direction. The NTSB’s previous study covering 1990 to 2012 noted that the proportion of pilots testing positive for at least one drug increased from 10% in 1990 to 40% in 2012. The current leap to 52.8% for the 2018–2022 period indicates that the aviation Manufacturers, particularly the general aviation sector, requires renewed educational campaigns focused on the hidden dangers of common medications.

Frequently Asked Questions (FAQ)

Does a positive drug test mean the pilot caused the crash?

No. The NTSB explicitly states that a positive toxicology result indicates the presence of a drug or its metabolites in the pilot’s system, but it does not necessarily mean the pilot was impaired at the time of the crash or that the drug contributed to the accident.

What was the most common impairing drug found?

According to the NTSB study, the most common potentially impairing drug detected was diphenhydramine, an over-the-counter antihistamine commonly found in allergy and cold medications like Benadryl.

Are airline pilots testing positive at the same rate as private pilots?

No. The study found that professional pilots (those with ATP or Commercial certificates, and those flying Part 135 operations) had significantly lower rates of drug detection compared to general aviation pilots with lower-level certifications.


Sources:
National Transportation Safety Board (NTSB) Press Release: “NTSB Releases Study on Drug Presence Trends Among Fatally Injured Pilots”

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Regulations & Safety

India’s New Aviation Rules Recognize Fractional Aircraft Ownership

India’s Bharatiya Vayuyan Niyam, 2026 recognizes fractional aircraft ownership and replaces the Aircraft Rules, 1937 from January 1, 2027.

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India's New Aviation Rules Recognize Fractional Aircraft Ownership
Photo: Press Information Bureau

India’s new civil aviation rulebook, the Bharatiya Vayuyan Niyam, 2026, recognizes fractional ownership of aircraft, allowing one aircraft to be jointly owned as long as responsibility for its operation and maintenance is clearly identified. The rules take effect on January 1, 2027, and replace the Aircraft Rules, 1937, which served as the country’s principal aviation rulebook for decades.

The provisions were set out in a backgrounder posted on November 4, 2026, by the Government of India’s Press Information Bureau (PIB), citing the Ministry of Civil Aviation. The government notified the new rules under the Bharatiya Vayuyan Adhiniyam, 2024, the act that provides the legislative basis for the overhaul. According to the PIB, the Niyam comprises 220 rules organized into eight chapters and six schedules.

What the rules say about fractional ownership

The PIB document says the rules allow shared investment in an aircraft under arrangements that identify who is responsible for its operation and maintenance. The same section regulates aircraft imports, fractional ownership arrangements and private aircraft operations, and it states that private aircraft cannot be used for hire or reward except as permitted under the rules. The PIB summary does not give further detail on how fractional arrangements must be structured.

Registration rules sit alongside the ownership provisions. Aircraft may be registered under Category A or Category B, depending on prescribed ownership, citizenship, business registration and leasing criteria. Any change in an aircraft’s ownership or lessor must be reported immediately, and further flying is restricted until the registration requirements are met, unless the Directorate General of Civil Aviation (DGCA) grants written permission. Aircraft must display the nationality mark “VT”, followed by a hyphen and three assigned capital letters.

Leasing, deregistration and export

The government links the new rules to its aircraft leasing framework. The Protection of Interests in Aircraft Objects Act, 2025, which grew out of India’s Cape Town aircraft leasing bill, implements the Cape Town Convention framework in India. According to India Code, the government’s legislative database, the act (Act No. 17 of 2025) was enacted on April 16, 2025, came into force on May 1, 2025, and gives effect to the Cape Town Convention on International Interests in Mobile Equipment, signed on November 16, 2001, and its Aircraft Protocol.

Under the new rules, eligible applications from holders of an Irrevocable De-registration and Export Request Authorisation (IDERA) to cancel a registration must be processed within five working days. The rules also provide for the export of aircraft after deregistration. The PIB says that, over time, this may help reduce aircraft acquisition and leasing costs and ease pressure on airfares.

Fares, crews and penalties

For airlines, the rules require tariffs to be set on factors including operating costs and published digitally, and scheduled operators must submit their tariffs to the DGCA for monitoring. Booking websites and tickets must show the total amount payable and a breakdown of fares, taxes, fees and other charges. In extraordinary situations, the central government may issue proportionate, time-bound directions in the public interest.

Crew provisions cover flight and duty-time limits, minimum rest and fatigue management. Crew members may not consume alcohol or specified intoxicants within 12 hours before a flight. For cabin crew, the rules set a minimum of one member for aeroplanes with 10 to 50 seats and helicopters with 20 to 50 seats, two members for aircraft with more than 50 seats, and one more for every 50 seats or part thereof beyond 99 seats. No cabin crew member may serve on more than three aircraft types.

Personnel licensing spans 23 categories of licences, ratings and certificates for pilots, flight engineers, aircraft maintenance engineers, air traffic controllers and radio-telephone operators. On enforcement, the PIB lists 21 punishable offences carrying imprisonment of up to two years, a fine of up to ₹1 crore, or both, plus 18 compoundable offences. A graded penalty structure with ten severity levels sets monetary penalties from ₹10,000 to ₹1 crore, depending on the contravention and the size of the offender.

Design approval and the wider market

The rules also give the DGCA a defined framework for aircraft design and certification. It may issue type certificates for aircraft, engines and propellers where India is the State of Design, validate or accept foreign type certificates, and authorize the design and manufacture of aircraft components. Draft airworthiness directives are generally published on the DGCA website for 30 days for comment, subject to exceptions.

The PIB places the rewrite against the growth of India’s airport network, which it says rose from 74 operational airports in 2014 to 166 as of October 2026. The rules also allow the central government to set up a Regional Air Connectivity Fund for viability gap funding, which may be financed by a levy on domestic scheduled flights. The new rules replace Part IX of the Aircraft Rules, 1920, as well as the 1937 rules, and come into force on January 1, 2027.

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Regulations & Safety

FAA Lifts Nationwide Ground Stop as Some Departures Resume

The FAA lifted its nationwide ground stop of November 13, 2026, and said some departures are resuming after it tested its systems.

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FAA Lifts Nationwide Ground Stop as Some Departures Resume
Photo: FAA

The Federal Aviation Administration (FAA) has lifted the nationwide ground stop it ordered on November 13, 2026, and some flight departures are resuming, the agency said in a statement on its official X account. The FAA said it tested its systems to confirm they were stable before it cleared flights to resume.

The statement does not give a time for the end of the stop or name a cause, and the FAA says its technicians are investigating. AirPro News reported on the FAA’s original ground stop order on November 13.

What the FAA said

“The safety of the flying public is always the FAA’s highest priority,” the agency said in its X statement. It said the ground stop had been lifted and that some departures were resuming.

The FAA said that before clearing flights to resume, it had tested its systems to confirm they were stable and that operations remain reliable. It told passengers to contact their airlines for flight updates.

The agency’s statement on the nationwide ground stop, published on the FAA website on November 13, says the stop was ordered after communication problems affected multiple Air Route Traffic Control Centers. “FAA technicians are investigating the issue,” the statement says. The FAA marks the statement as preliminary and subject to change.

What the command center advisory set out

Air Traffic Control System Command Center (ATCSCC) Advisory 111, time-stamped 20:54 UTC on November 13 and addressed to all aircraft operators, ground stopped all airports by order of the FAA command center, citing extraordinary circumstances and reasons of safety. It told operators that all departing traffic should remain on the ground until further notice.

The advisory listed the scope of the stop as all airports and the reason as equipment and outage. It gave an event window from 20:53 UTC on November 13 to 04:00 UTC on November 14, and said inbound international flights would be managed on a case by case basis.

What officials said

Homeland Security Secretary Markwayne Mullin spoke to reporters at the White House on November 13, and Transportation Secretary Sean Duffy also addressed the ground stop, The Associated Press reported. According to the AP, Trump administration officials said new technology added to the air traffic control system had overloaded older systems, leading to “intermittent” communications and radar gaps.

Mullin said the FAA was installing “new equipment, new technology” and that it “was overwhelming the older system,” the AP reported. Asked whether a cyberattack could be ruled out, Mullin said: “There’s nothing completely certain right now. It doesn’t appear that way.” He said there were no “footprints” of an attack. The AP reported that officials were still searching for the cause.

Mullin said no one was in danger and that more than 3,000 flights were safely landed, according to the AP. Duffy said 3,500 airplanes were in the sky when the stop began, and added: “And last time I looked, we had less than 400 in the airspace.” According to the AP, Duffy said he could not guarantee that it would not happen again.

Diversions and recovery

The AP reported that the ground stop was lifted on the night of November 13 after about five hours, and that limited domestic departures resumed that evening. About 11,000 flights carrying more than 1.5 million passengers had been scheduled to depart U.S. airports after 4 p.m. EST on November 13, according to the AP.

Citing Cirium data, the AP reported that at least 827 flights were diverted. As of 7:05 p.m. EST, 670 had been sent back to their departure airports and 157 had been redirected to other airports.

The AP reported that aircraft and crews were out of position after the stop and that a full recovery was expected to take days. Duffy said NCAA teams would be prioritized for travel to football games. Cargo flights were also delayed, and FedEx said it was prepared to activate contingency plans, according to the AP, which cited Airlines for America figures showing that U.S. airlines move about 61,000 tons (55,340 metric tonnes) of goods each day.

What comes next

The FAA has said its technicians are investigating and that it will provide updates. According to the AP, officials expect normal operations in time for the Thanksgiving travel rush.

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Regulations & Safety

FAA Orders Ground Stop at All Airports After Telecommunications Outage

The FAA ordered all airports ground stopped on November 13, 2026, citing a temporary telecommunications outage and reasons of safety.

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FAA Orders Ground Stop at All Airports After Telecommunications Outage
Photo: FAA

This is a developing story. Information may change as official details are released.

The Federal Aviation Administration (FAA) ordered all airports ground stopped on November 13, 2026, after what the agency described as a temporary telecommunications outage. An advisory from the FAA’s Air Traffic Control System Command Center (ATCSCC) set the start of the ground stop at 20:53 UTC (3:53 p.m. EST) and told operators that departing traffic should remain on the ground until further notice.

In a statement posted on its official account on X on November 13, 2026, the FAA said:

“There has been a temporary telecommunications outage – out of an abundance of caution all flights have been halted. Every flight has been accounted for and international flights will be handled on a case by case basis.”

What the command center advisory says

ATCSCC Advisory 111, time-stamped 20:54 UTC on November 13, is addressed to all aircraft operators. It states that, by order of the command center, all airports are ground stopped “due to extraordinary circumstances and for reasons of safety.”

The advisory’s summary table lists the scope as all airports and the reason as equipment/outage. It gives an event window from 20:53 UTC on November 13 to 04:00 UTC on November 14 (11 p.m. EST on November 13), lists 04:00 UTC as the time of its next update, and says inbound international flights will be managed on a case by case basis.

A follow-up operations plan, ATCSCC Advisory 112, time-stamped 21:02 UTC, carried the national ground stop forward with an event time of 21:00 UTC “and later.” It repeated that all departing traffic should remain ground stopped until further notice.

What the FAA has not yet said

The FAA’s statement does not say where the telecommunications outage occurred, which systems or facilities were affected, or when departures are expected to resume. The FAA has not stated the cause of the outage.

Neither advisory gives the number of flights held on the ground or airborne when the order took effect. The FAA’s statement says every flight has been accounted for. The command center’s advisory lists 04:00 UTC on November 14 as its next scheduled update.

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