At Detroit Metro, preventing crew impairment starts before the gate

Detroit Metro Airport runs more than 1,100 departures and arrivals a day. With long-haul routes and crews drawn from multiple countries, one lapse in a safety-critical job can disrupt an entire operation. The airport’s safety system depends on keeping impaired employees off duty before a flight ever pushes back.

Recent events in London show the stakes. A British Airways flight attendant admitted in a U.K. court that he performed an aviation duty while impaired by drugs on a May San Francisco–Heathrow flight. Colleagues reported he seemed disoriented, locked himself in a lavatory, and emerged naked and incoherent. The crew removed him from duty, notified the captain, and requested medical help. A blood test later detected methamphetamine and amphetamine. No announcement was made to passengers during the 10.5-hour trip. Paramedics met the aircraft at Heathrow, and British Airways later dismissed him.

A judge imposed a six-month prison term, suspended for 12 months, plus community service and costs. The court called the conduct serious because it diverted the captain and crew and left required pre-flight checks undone, shifting work to others on a long-haul flight. Under U.K. law the offense can carry up to two years in prison; the suspended sentence reflected an early guilty plea and no prior record.

In Michigan, the comparison point is the U.S. system built to stop such cases at the gate. At Detroit Metro in Romulus and at other U.S. airports, pilots, flight attendants, aircraft dispatchers, maintenance technicians, and certain ground personnel fall under Federal Aviation Administration drug and alcohol rules in 14 CFR Part 120. Programs must include pre-employment screening, random testing, testing for reasonable cause, and post-accident testing. Any verified violation leads to immediate removal from safety-sensitive duties. Before a return, employees must complete an evaluation by a qualified professional, provide a negative return-to-duty test, and complete unannounced follow-up tests. Airlines also require crews to attest they are fit for duty at sign-in and train employees to escalate concerns to a supervisor or the captain.

These programs are designed to work quietly and consistently. The aim is to prevent impairment from reaching the aircraft; if a problem is discovered in flight, isolate the employee, redistribute tasks, and complete the trip safely. If detection happens only after takeoff, a breakdown has already occurred before departure.

DTW’s size makes consistent compliance essential. Delta Air Lines, the airport’s largest carrier, and other U.S. and foreign airlines operating here must run FAA-compliant testing and training. The Wayne County Airport Authority manages the airfield and terminals, but carriers administer employee testing and the FAA enforces compliance through inspections. Union contracts often add peer-support and reporting pathways. Even where crews are not unionized, most airlines provide confidential assistance and monitoring designed to identify issues early and keep qualified employees in recovery on a structured path.

What matters locally is whether the system works day to day:

• Program rigor: carriers keep testing protocols current, document training, and respond promptly to reasonable-cause reports. FAA audits and Detroit-area inspections review these systems.
• Early intervention: treatment and monitoring programs for safety-sensitive employees, well established for pilots and expanding for cabin crews, work best when help is sought before duty.
• Reporting discipline: crews know how to raise concerns, and supervisors record actions so gaps can be found and fixed.

Cases like the London incident are rare in commercial aviation, but the margin for error is thin. One impaired crew member can leave safety checks incomplete and pull attention from passengers and emergencies. The record from that flight shows the response chain worked: colleagues acted, the captain adjusted staffing, and medical care met the aircraft. For Michigan carriers, the measure is prevention, training, peer support, and testing that catch impairment before anyone steps into a safety-sensitive role. The standard for Detroit is clear: catch it on the ground, before the cabin door closes.