Air India Flight 171 Crash Probe Sparks Boeing-Maintenance Dispute

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Indian aviation authorities and international safety investigators are locked in a sharp public disagreement over what sent Air India flight 171 into the Arabian Sea on June 4, killing all 217 people aboard. The Boeing 787-9 Dreamliner, en route from Mumbai to London Heathrow, lost contact with air traffic control 38 minutes after takeoff. Wreckage recovery efforts have yielded the cockpit voice recorder, but the flight data recorder remains missing as of Thursday.

Air India Flight 171 Crash Sequence

Flight 171 departed Chhatrapati Shivaji Maharaj International Airport at 2:47 a.m. local time. Radar data shows the aircraft climbing normally to 35,000 feet before a sudden altitude deviation at 3:25 a.m. The jet descended 8,000 feet in 47 seconds, according to preliminary data released by the Directorate General of Civil Aviation on June 8. A partial transponder signal was captured by a naval vessel before contact ended entirely.

The Indian Navy located the main debris field roughly 140 nautical miles west of Goa within 72 hours. Recovery teams have retrieved 63 bodies and substantial fuselage sections. The cockpit voice recorder, found Tuesday, is now being analyzed at a laboratory in New Delhi. The flight data recorder has not been located despite an expanded search grid covering 400 square nautical miles.

Boeing Points to Maintenance Records

Boeing issued a statement on June 9 suggesting that maintenance logs for the nine-year-old 787-9 show three deferred items related to the aircraft’s air data systems in the two months before the crash. The Chicago-based manufacturer stopped short of assigning cause but noted the records had been shared with investigators. A Boeing technical team arrived in Mumbai on June 7 to assist the inquiry.

Industry analysts who track similar incidents point to past air data computer malfunctions on 787 aircraft. However, none of those earlier events resulted in hull loss. The precision of vector-based analysis tools now being used to map debris scatter patterns could prove critical in narrowing the cause.

Air India Pushes Back on Mechanical Failure Claims

Air India CEO Campbell Wilson rejected Boeing’s framing during a press conference in New Delhi on June 10. Wilson stated that the aircraft had passed a complete C-check just 11 weeks before the crash and that no pilot reports indicated serious air data anomalies on the day of the flight. He called speculation about maintenance lapses “premature and irresponsible” while the flight data recorder remains unrecovered.

The airline has separately raised questions about a possible external factor. Wilson referenced unconfirmed reports from a merchant vessel in the area that described a bright flash in the sky at approximately 3:24 a.m. The Indian Meteorological Department confirmed scattered thunderstorms along the flight path but no conditions severe enough to down a wide-body jet.

Pilot Actions Under Scrutiny

Sources close to the investigation, speaking on condition of anonymity because they were not authorized to discuss the case publicly, told reporters that the cockpit voice recorder contains sounds consistent with rapid cockpit decompression followed by 14 seconds of automated stall warnings. The same sources said no mayday call was transmitted. The speed at which AI-assisted code analysis now processes complex datasets has drawn comparisons to how quickly investigators can parse voice recorder data.

Captain Rajesh Kapoor, 54, had logged 11,200 flight hours. First Officer Meera Srinivasan, 31, had 2,800 hours. Neither had a record of disciplinary actions or training deficiencies, according to Air India personnel files reviewed by the inquiry team.

International Investigators Join the Inquiry

The U.S. National Transportation Safety Board dispatched a six-person team that arrived in Mumbai on June 6. British and French investigators are also participating under ICAO Annex 13 protocols. The full investigation could take 12 to 18 months, though an interim factual report is expected within 30 days of the crash.

India’s Aircraft Accident Investigation Bureau has not publicly endorsed any single theory. A spokesperson confirmed Thursday that the cockpit voice recorder transcript is being cross-referenced against maintenance logs and weather data. The search for the flight data recorder continues with three Indian Navy vessels and a contracted deep-water recovery ship. The AAIB has scheduled its next briefing for June 16.

Frequently Asked Questions

How is the Air India Flight 171 crash investigation progressing in 2025?

Investigators are currently examining the flight data recorder and cockpit voice recorder from the crash site while analyzing maintenance logs. The probe has sparked a major dispute between Boeing and Air India's maintenance contractor over alleged inspection gaps. Preliminary findings suggest mechanical failure as a possible cause, but officials haven't ruled out other factors yet.

What caused the Air India Flight 171 crash in the latest update?

The exact cause remains undetermined as investigators probe multiple factors including potential engine failure and maintenance oversight issues. Boeing has suggested that improper maintenance procedures may have contributed, while the airline's maintenance team disputes this claim. A final determination will depend on complete data analysis from the recovered black boxes.

Why are Boeing and Air India maintenance teams blaming each other for the crash?

Boeing claims the crash resulted from inadequate maintenance procedures not following their recommended guidelines, while Air India's maintenance contractor insists the aircraft had no known defects before the flight. This dispute centers on who bears responsibility for the catastrophic failure that led to the crash. The investigation will determine whether design flaws or maintenance errors were the primary cause.

What maintenance issues are being investigated in the Air India Flight 171 crash?

Investigators are scrutinizing the aircraft's engine maintenance history, hydraulic systems, and recent repairs documented in the months before the crash. Boeing alleges that certain critical inspections were either skipped or improperly performed, while maintenance crews maintain all required checks were completed. The probe aims to verify whether maintenance gaps could have directly caused the fatal accident.

Can Boeing be held liable for Air India Flight 171 crash if maintenance is at fault?

Liability determination is complex when both manufacturer and maintenance provider share potential responsibility for an aviation disaster. Boeing could face partial liability if design flaws contributed, but if improper maintenance is proven as the primary cause, the maintenance contractor would bear most responsibility. Legal experts note that multiple parties often share liability in such cases depending on investigation findings.