Why Was An Air India Pilot Removed From A Zurich-Delhi Flight?

An Air India pilot was removed from a Zurich-Delhi flight before take-off after concerns about alcohol consumption led to testing at Zurich Airport.

The incident happened on September 6, 2026, when Air India flight AI151 was preparing to fly from Zurich to Delhi. Ground-handling staff reportedly noticed the smell of alcohol and alerted the authorities.

The pilot was then taken off the flight. Reports said the subsequent alcohol testing showed a result above the permitted limit. Swiss aviation authorities informed India's aviation regulator, the Directorate General of Civil Aviation (DGCA).

The incident has again brought attention to strict alcohol and fitness rules for airline pilots.

Why Was The Air India Pilot Removed?

The main reason was an alcohol-related test before the flight.

According to reports, ground staff at Zurich Airport noticed the smell of alcohol from the crew member and informed the authorities. The pilot was subsequently tested.

Swiss aviation authorities have rules that allow alcohol checks on flight and cabin crew during ramp inspections. Switzerland has conducted such random checks since 2022, including tests without prior suspicion.

In this case, the pilot was removed from the aircraft before the Zurich-Delhi service could operate as scheduled.

What Did The Alcohol Test Show?

Reports differ slightly on the stage of testing and the status of the final medical process.

The Economic Times reported that sobriety testing showed the pilot's blood alcohol level was above the permissible limit. It also reported that Swiss aviation authorities took action and informed the DGCA.

Another report said the first officer failed the preliminary test and that a second test/final medical examination was still part of the process. The pilot was reportedly sent back to India as a passenger and suspended pending the final report.

Therefore, the case should be understood as an ongoing regulatory and disciplinary matter, rather than assuming every final detail has already been settled.

What Did Air India Say?

Air India said it follows a zero-tolerance policy regarding safety, regulatory and company-rule violations.

The airline said that confirmed violations are dealt with according to regulatory requirements and company policy. It also said safety remains a major priority.

Air India's own safety material states that pilots undergo a mandatory pre-flight medical check for alcohol consumption and that the airline follows a strict zero-tolerance policy.

The airline has also indicated that its staff reporting the Zurich incident shows that safety monitoring mechanisms are being used.

What Role Did Swiss Aviation Authorities Play?

The incident took place in Switzerland, so Swiss aviation authorities were involved.

The Swiss Federal Office of Civil Aviation (FOCA) has a system for alcohol testing of flight and cabin crew. According to FOCA, testing can happen during ramp inspections and is carried out with the cooperation of local police.

If an alcohol test is confirmed positive, the crew member can be suspended from further activities and the relevant authorities are informed.

FOCA told The Economic Times that it had taken action against the pilot under Swiss regulations and informed India's DGCA.

Why Are Alcohol Rules So Strict For Pilots?

Flying a passenger aircraft requires pilots to remain fully fit and alert.

Even a small impairment can affect important tasks such as:

• Decision-making
• Concentration
• Reaction time
• Communication
• Emergency handling
• Aircraft operation

Because of this, aviation regulators treat alcohol violations very seriously.

India's DGCA rules also provide for breath-analyser testing of crew members. The rules specify procedures for positive tests, including a second test and reporting of positive or missed cases to the regulator.

What Happens After A Pilot Fails An Alcohol Test?

The exact process can depend on where the flight starts and which aviation authority conducts the test.

Generally, the crew member may be:

1. Removed from flying duty.
2. Tested again according to the applicable procedure.
3. Reported to the relevant aviation authority.
4. Investigated by the airline.
5. Subjected to regulatory or disciplinary action.
6. Allowed to return to flying only after meeting the required conditions.

In the Zurich case, Swiss authorities informed the DGCA, while Air India separately dealt with the pilot under its company and safety procedures.

Did The Zurich-Delhi Flight Continue?

The Economic Times reported that AI151 could not operate as scheduled after the pilot was removed from the aircraft.

The incident therefore involved not only a crew-safety issue but also an operational impact on the scheduled flight.

The available reports do not establish that passengers were put at risk during flight because the pilot was removed before take-off.

Is This The Same As The Recent Air India Drug-Test Case?

No. These are separate incidents.

Earlier in September 2026, Air India terminated the Pilot-in-Command of a Phuket-Delhi flight after a confirmatory test showed a non-negative result for a psychoactive substance following an August 4 incident.

That case involved a different flight, different circumstances and a different substance-related investigation.

The Zurich case concerns an alcohol test before departure.

Keeping the two cases separate is important because they involve different investigations.

What Does This Mean For Air India?

The Zurich incident comes at a time when aviation safety and crew fitness are receiving increased attention.

Air India has publicly highlighted its safety systems and zero-tolerance approach. The airline has also faced scrutiny over other recent crew-related safety matters.

However, one incident should not automatically be treated as evidence about every pilot or every Air India flight. The Zurich case concerns the specific crew member involved and remains subject to the applicable investigation and regulatory process.