Legal challenges to the Human Intervention Motivation Study

Legal challenges to the Human Intervention Motivation Study involve federal and state court cases, administrative proceedings, arbitrations, and regulatory actions challenging practices associated with the FAA HIMS program, a Federal Aviation Administration (FAA) substance abuse monitoring and return-to-duty program for aviation professionals. Cases have addressed whistleblower retaliation through psychiatric evaluations, religious discrimination in mandated Alcoholics Anonymous participation, disputed biomarker testing, diagnostic misalignment with clinical standards, and allegations that airlines use HIMS referrals to manage employees rather than address genuine clinical concerns.

A 2023 National Academies of Sciences, Engineering, and Medicine study—the first independent review in the program's 49-year history—found "no solid evidence" supporting the program's claimed 85 percent success rate and documented that the FAA and the Air Line Pilots Association (ALPA) had declined to provide outcome data to congressionally mandated researchers.^[1] Program stakeholders have acknowledged that claimed outcomes depend on coercive leverage over participants' careers rather than therapeutic efficacy alone, with Dr. Lynn Hankes explaining in a 2017 CBS News interview: "If you threaten a pilot with taking away his wings, it's like threatening a doctor with taking away his stethoscope. That's a lot of leverage."^[2]

Given the program's acknowledged reliance on coercive leverage and the National Academies' finding that pilots avoid disclosure due to fear of career consequences, litigation may underrepresent the scope of concerns within the program.^[1][2]

Delta Air Lines paid psychiatrist Dr. David Altman approximately $74,000 to evaluate pilot whistleblower Karlene Petitt, who had submitted a 43-page safety report to Delta executives detailing concerns about pilot fatigue, training records, and safety management systems. Altman diagnosed her with bipolar disorder, which grounded her. However, a panel of nine physicians from the Mayo Clinic's Aerospace Medicine Department unanimously concluded she did not have bipolar disorder or any psychiatric disorder. Dr. Lawrence Steinkraus of Mayo Clinic testified that Altman's diagnosis was "a puzzle for our group" and that "the evidence does not support presence of a psychiatric diagnosis but does support an organizational/corporate effort to remove this pilot from the rolls."^[3]

Altman later testified that his diagnosis was driven in part by Dr. Petitt's accomplishments, which he characterized as "well beyond what any woman I've ever met could do"—therefore suggestive she was manic.^[3]

In December 2020, Administrative Law Judge Scott Morris ruled Delta had "weaponized" the psychiatric evaluation process and awarded Dr. Petitt $500,000 in compensation—five times the highest previously recorded award under the whistleblower statute. Morris ordered Delta to prominently post copies of his decision at every pilot base.^[3] Altman forfeited his medical license in 2020 rather than face charges from the Illinois Department of Financial and Professional Regulation over his conduct in psychiatric exams of two Delta pilots.^[3][7] The case settled in October 2022.^[8]

The Delta executive who approved the psychiatric referral, Stephen Dickson, was subsequently nominated by President Donald Trump to serve as FAA Administrator. Senator Maria Cantwell (D-WA) opposed his confirmation, citing the Petitt case as evidence of problems with airline safety culture.^[9] Dickson was confirmed 52-40 but resigned as FAA Administrator in March 2022, several months before the Department of Labor's Administrative Review Board affirmed the ruling against Delta in August 2022.^[3] Despite the ruling, Delta did not discipline the employees identified by Judge Morris as responsible for the unlawful retaliation. Jim Graham, then vice president of flight operations whom the judge described as exhibiting testimony "of dubious credibility," was promoted in October 2020 to CEO of Endeavor Air (Delta's regional carrier subsidiary) and senior vice president of Delta Connection.^[3] According to Dr. Petitt's attorneys, Kelley Nabors, the human resources representative whose report facilitated the retaliatory psychiatric referral, was promoted to Delta's Salt Lake City HR manager.^[10]

Dr. Petitt's attorney, who has represented over 50 aviation industry whistleblowers, described Delta's conduct as "Soviet-style psychiatric examination" used to silence safety concerns.^[3]

A United Airlines check airman with nearly 30 years of experience alleges in federal court that his head injury was mischaracterized as alcoholism, with United and ALPA pressuring him to admit to alcoholism and enter HIMS rather than providing medical treatment for his concussion.^[11]

The complaint states that despite completing a month-long inpatient program and receiving multiple evaluations finding no alcohol dependency, Tallon remained in HIMS until his termination in February 2025 for refusing further compliance. The lawsuit alleges United saved millions in long-term disability payments by terminating Tallon through the HIMS program rather than providing a medical separation for his head injury. Tallon's attorney Mike Lueder described the system as "Kafkaesque."^[4] The case is ongoing.

Captain Andrea Ratfield, a Delta pilot since 2007, filed suit in federal court alleging that Delta used HIMS referral and retreatment requirements as retaliation after she reported sexual harassment by male pilots. According to court filings, Ratfield sought help from a company supervisor to cope with trauma from sexual assault at an aviation event. She was directed to the HIMS program—a substance abuse program—rather than receiving trauma-focused support. The lawsuit alleged that Delta management subsequently used additional HIMS treatment requirements as retaliation for her harassment complaints. Ratfield's complaint also alleged that a PEth test administered during her monitoring was "non-controlled" and "notorious for its false positives."^[12]

In August 2023, Judge Katherine Menendez of the United States District Court for the District of Minnesota denied Delta's motion to dismiss, ruling that Ratfield "plausibly alleged that she had been subjected to 'a sexually hostile work environment emblematic of the good ol' boys club.'" The court rejected Delta's argument that retreatment requirements were "beneficial opportunities," finding that binding case law "indicates otherwise."^[12] The case was dismissed with prejudice in August 2024, indicating a settlement.^[13]

In October 2025, John Paul Castillo III, a former United States Air Force combat pilot who joined United Airlines in January 2023, filed a federal lawsuit alleging racial discrimination, disability discrimination, retaliation, and defamation. Castillo was arrested in July 2023 for suspected DUI based on a field sobriety test; no blood alcohol test was conducted, and the charges were later dismissed through pretrial diversion.^[14]

According to the complaint, United pressured Castillo to enroll in the HIMS program despite an independent psychiatric evaluation finding no alcohol-use disorder and describing the incident as "a one-off, aberrant event." The lawsuit alleges United retaliated against Castillo for retaining legal counsel, citing a chief pilot's statement as "direct evidence" of retaliation.^[14][15] When Castillo refused HIMS enrollment, United terminated him in November 2023, citing a temporary lapse of his FAA medical certificate. Castillo alleges that United's "perception of Mr. Castillo as an alcoholic was not a neutral medical judgment but reflected racialized stereotypes about Hispanic men and alcohol use," and that a white probationary pilot facing similar DUI charges remained employed because he joined the HIMS program.^[16] The lawsuit also alleges that United defamed Castillo by falsely reporting to the FAA that his termination was due to "pilot-performance issues."^[14] The case is pending.

The EEOC filed suit against United Airlines on behalf of a Buddhist pilot forced to attend Alcoholics Anonymous meetings—held in churches with opening prayers and acknowledgment of a "Higher Power"—to regain FAA medical certification.^[17] United denied pilot David Disbrow's request to attend Refuge Recovery, a Buddhism-based peer support group, as religious accommodation.^[18]

United refused the accommodation, and Disbrow was unable to obtain a new FAA medical certificate. In November 2022, United agreed to a consent decree paying $305,000 in back pay and damages, reinstating Disbrow into HIMS while allowing participation in a non-12-step program, and implementing policies to accept religious accommodation requests in HIMS going forward.^[17]

EEOC New York Regional Attorney Jeffrey Burstein stated: "Employers have the affirmative obligation to modify their policies to accommodate employees' religious beliefs. If they require their employees to attend AA as part of a rehabilitation program, they must make sure that they allow for alternatives for their employees who have religious objections to AA."^[17]

A commercial airline pilot tested positive on a random EtG test after eating pulled pork at a restaurant that did not disclose the dish was prepared in beer; the D.C. Circuit remanded the case after the pilot submitted SAMHSA advisory evidence that EtG should not be used as the sole basis for such decisions.^[19][20]

Erwin provided the FAA with evidence including the restaurant's confirmation, his negative follow-up tests, and a 2012 SAMHSA advisory cautioning against using EtG results as sole evidence of alcohol consumption. A toxicology expert concluded "within a reasonable degree of scientific certainty" that the positive result was from incidental exposure rather than intentional consumption. The FAA denied reconsideration without adequate explanation.^[19]

In December 2021, the U.S. Court of Appeals for the D.C. Circuit remanded the case, ruling that the FAA must provide the "why and wherefore" of its decision rather than simply asserting agency expertise. The court recognized that Erwin suffered a cognizable injury from his "poorer position in the HIMS Step Down Plan" and accompanying extended monitoring requirements resulting from the disputed test.^[19]

In June 2024, the National Transportation Safety Board Administrative Law Judge reversed the FAA's denial of Donald Park's first-class medical certificate, finding the agency had "prematurely, and without sufficient information, labeled Petitioner as having substance dependence."^[21]

Park, a decorated U.S. Army helicopter pilot who earned two air medals for combat missions in Afghanistan and subsequently worked as an airline pilot for Envoy Air, was denied certification based solely on a blood alcohol content of .207 from a 2019 dirt bike accident on a private farm field—not a criminal DUI.^[21] FAA medical consultants Dr. Matthew Dumstorf and Dr. Flynn opined that the BAC alone demonstrated "increased tolerance" sufficient to establish substance dependence under 14 CFR § 67.107(a)(4), relying on a 2018 FAA technical report rather than conducting a personal interview or contacting collateral sources.^[21]

Park's expert witness, Dr. Leonard Weiss, a board-certified forensic and addiction psychiatrist, testified that "it's not medically appropriate to create a determination of substance dependence without examining the entirety of a person's relevant medical history" and that a "BAC alone does not tell you anything" beyond "a huge inference."^[21] ALJ Alisa M. Tapia found the FAA's paper review methodology "deficient," noting that "once the government obtained the BAC lab results, it stopped all investigations, halted any need for additional information, and discarded any notion of discovering anything other than Petitioner Park has a substance dependence problem."^[21]

Park testified that he chose to appeal rather than enter the HIMS program because he "morally...could not find himself going to a HIMS program and 'play the part of an alcoholic'" when he did not have a substance dependency problem.^[21] The court distinguished the case from prior NTSB precedent, citing Petition of Lazzari (2021), which held that "we do not find that every DUI or other alcohol-related event is, without more, per se disqualifying."^[21]

In April 2024, a commercial airline pilot filed a petition for writ of mandamus in the United States District Court for the District of Columbia against the Federal Aviation Administration and named FAA officials, alleging the agency withheld processing of his special issuance medical certificate in retaliation for an unrelated NTSB appeal and employer litigation arising from aviation safety whistleblowing.^[a] The petition alleged that FAA regional officials conditioned certification processing on the pilot's withdrawal of an NTSB appeal and employer litigation, and demanded the pilot undergo psychiatric evaluation by one of three specifically named psychiatrists without clinical justification or checklist basis.^[22]

The case is notable as a federal mandamus action—a petition asking a court to compel a federal agency to perform a duty it has allegedly refused to perform—seeking to compel the FAA to process a completed special issuance application. The FAA had confirmed "No FTP" (no Failure to Provide) on the pilot's file on February 1, 2023, acknowledging the application was complete, yet declined to process it.^[22] The allegations are unproven and no final judgment had been issued as of the date of this article's most recent revision. For additional context see Human Intervention Motivation Study § Allegations of program misuse.^[22]

In November 2023, Republic Airways pilot Brian McKeon filed a medical malpractice lawsuit against his HIMS Aviation Medical Examiner, Dr. Ian Blair Fries, and A1A Aviation Medicine, Inc. in Indian River County, Florida. McKeon alleged that in June 2021, Fries erroneously attributed a positive PEth blood test result of 246 ng/ml—belonging to a different, unrelated pilot—to McKeon and reported it to the FAA, stating: "we now have a clearly positive PEth. That ends the uncertainty." The FAA revoked McKeon's special issuance medical certificate the following day, grounding him indefinitely.^[23]

According to the complaint, McKeon had been fully compliant with HIMS requirements throughout his monitoring. Four earlier low-positive EtG results had each been accompanied by negative EtS confirmatory tests and negative PEth blood tests, and were appropriately attributed to incidental exposure by the FAA.^[23]

On June 25, 2025, a jury found Fries 100% negligent and awarded McKeon $513,000 in damages, including $508,500 in lost income—McKeon was paid only for actual flight hours and received no income from Republic Airways while grounded without medical clearance—and $4,500 in medical expenses. The jury found McKeon bore zero contributory negligence.^[24] Dr. Fries, a Senior FAA HIMS Aviation Medical Examiner who serves as Chairman of the AOPA Board of Aviation Medical Advisors, on the FAA/ALPA HIMS Advisory Board, and as aviation medical consultant for the Teamsters Airline Division,^[25][26] remained listed as an active HIMS AME on the FAA's directory as of February 2026.^[27]

The case represented the first known jury verdict finding a HIMS Aviation Medical Examiner liable for negligence in monitoring. The complaint alleged seven specific breaches of the standard of care, including failure to track the source and identity of blood PEth test results to the correct pilot, failure to accurately interpret four split positive-EtG/negative-EtS results, and referring McKeon to unnecessary psychiatric and rehabilitation treatment following the erroneously reported PEth test.^[23]

In August 2024, Captain Martin Barnard, a Delta pilot, filed a negligence lawsuit against Dr. Alan Kozarsky, an ophthalmologist serving as his HIMS AME. According to the complaint, Barnard had entered HIMS following a 2020 DUI, and in September 2021 the FAA granted him a special issuance first-class medical certificate. In October 2022, Barnard reported possibly consuming low-alcohol beer accidentally; a subsequent PEth test returned negative. Despite the negative result, Barnard alleges Kozarsky reported to the FAA that Barnard was experiencing "imperfect recovery" and presented an "increased risk for full relapse."^[28]

Delta subsequently demanded Barnard accept the diagnosis and undergo 98 days of inpatient treatment. Kozarsky moved to dismiss, arguing he had no doctor-patient relationship with Barnard and was exempt from liability as an FAA representative. The court denied the motion, ruling that "Mr. Barnard's complaint, accepted as true, plausibly alleges that it was foreseeable that Dr. Kozarsky's report would cause the FAA to revoke Barnard's medical license." The case is proceeding to discovery and represents the second known negligence lawsuit filed against a HIMS AME in two years, following McKeon v. Fries in Florida, which resulted in a $513,000 jury verdict against a different HIMS AME for misattributing a PEth test result (see above).^[24][29]

First Officer Michael Danford, a Delta pilot and United States Naval Academy graduate with 18 years at Delta, was terminated in 2018 after disputing a positive PEth alcohol test. Danford maintained he had not consumed alcohol and presented three subsequent negative tests, but Delta required him to either undergo three to six months of inpatient treatment or face termination. The arbitration decision noted that his HIMS AME, chief pilot, and union representative all urged him to accept treatment regardless of whether he had actually relapsed. In February 2021, the arbitrator ruled for Delta, finding that just cause existed under the negotiated program protocols, while acknowledging "we can never be certain whether or not Danford was abstinent and simply had some false positives."^[5]

The FAA subsequently reissued Danford's first-class medical certificate without requiring inpatient treatment, determining that full consideration of clinical and testing data "cast doubt on the reliability" of the disputed test result.^[5]

Subsequent peer-reviewed research confirmed that PEth false positives can result from alcohol vapor exposure during sample collection^[30] and from red blood cell transfusions.^[31]

Danford subsequently co-founded Pilots for HIMS Reform, a pilot advocacy organization, in 2024.^[6]

Several recurring patterns emerge across these cases:

• Testing reliability: Disputed biomarker results are central to Erwin (EtG from food preparation), Danford (PEth false positive acknowledged by arbitrator), McKeon (misattributed PEth result), Barnard (negative PEth overridden by AME report), and Ratfield (allegation of "non-controlled" PEth testing). The Substance Abuse and Mental Health Services Administration has warned that EtG tests "should not be used as the sole basis for legal or disciplinary action."^[20]
• Due process deficits: Multiple cases involve allegations that pilots lacked meaningful ability to challenge determinations—Castillo alleges retaliation for retaining counsel, Park documents an FAA paper review with no personal evaluation, and the National Academies found no formal complaint or appeals mechanism within the program structure.^[1]
• Diagnostic misalignment: Park established that the FAA can label a pilot as substance-dependent without meeting clinical diagnostic criteria under the DSM-5, while Tallon alleges a head injury was mischaracterized as alcoholism.
• Program weaponization: Petitt resulted in a judicial finding that Delta "weaponized" psychiatric evaluations, Ratfield alleged HIMS retreatment as retaliation for harassment complaints, and Castillo alleges HIMS referral pressure constituted racial discrimination and retaliation.
• HIMS AME accountability: McKeon produced the first jury verdict against a HIMS AME ($513,000), while Barnard is the second negligence lawsuit against a HIMS AME in two years, with the court denying dismissal based on the claimed absence of a doctor-patient relationship.

On March 19, 2026, the Department of Transportation Office of Inspector General announced an audit of FAA's oversight of the HIMS program (Project No. 26A3004A000), the first federal oversight audit in the program's 52-year history.^[32] The audit was requested on November 8, 2023, by Senator Ted Cruz (R-TX), then Ranking Member of the Senate Committee on Commerce, Science, and Transportation, citing "concerns with recent incidents involving the mental health of pilots."^[32] The announcement cited the October 22, 2023 Alaska Airlines incident involving an off-duty pilot as illustrating the importance of mental health and substance misuse treatment oversight.^[32] The Inspector General's office will conduct work at FAA Headquarters and the Civil Aerospace Medical Institute in Oklahoma City. For a detailed discussion of the audit see Human Intervention Motivation Study § DOT OIG audit (2026).^[32]

• Human Intervention Motivation Study
• Whistleblower protection in the United States
• Aviation medical examiner
• Alcoholics Anonymous
• Phosphatidylethanol
• Ethyl glucuronide