Boeing Cargo Plane Vanishes Over Arabian Sea With Five Crew Members

Search Operation Underway After Contact Lost With Karachi-Bound Freighter

Pakistan has launched an extensive search operation for a Boeing 737-400 cargo aircraft that disappeared over the Arabian Sea on Tuesday evening with five crew members on board. The Karachi-bound freighter operated by Pakistani carrier K2 Airways took off from Sharjah in the United Arab Emirates and lost contact with air traffic control at approximately 9:18pm local time (16:18 GMT) after reporting a navigational system fault, according to the Pakistan Airports Authority. The plane, identified by registration AP-BOI, was the only aircraft in the K2 Airways fleet.

Flight tracking data from Flightradar24, a global flight-tracking service, reveals alarming details about the aircraft’s final moments. Minutes after the initial contact loss, the plane dropped nearly 1,525 metres (5,000 feet) of altitude in less than a minute before climbing about 1,830 metres (6,000 feet) in the next 30 seconds. The aircraft then entered a final, near-vertical descent from a height of 11,140 metres (36,550 feet), with its last transmitted position placing it at just 335 metres (1,100 feet), descending at 22,400 feet per minute, or about 400 kilometres per hour.

All contact with the freighter ceased approximately 155 nautical miles (287 kilometres or 178 miles) west of Karachi. Security sources confirmed to Al Jazeera that a Pakistani navy ship, a merchant vessel operated by the Pakistan National Shipping Corporation, and two navy aircraft have joined the search operation. No wreckage or survivors have been found so far, leaving families and aviation authorities anxiously awaiting updates.

Airline Confirms Full Cooperation With Authorities

K2 Airways, the Karachi-based private cargo airline that operated Flight KTA1732, released a statement on Wednesday expressing hope for the crew’s safety while pledging complete cooperation with investigating authorities. The airline emphasized its commitment to supporting search efforts and maintaining transparency throughout the investigation. The carrier’s management and staff remain focused on assisting authorities and providing any necessary information about the aircraft’s maintenance history and flight operations. Industry observers note that losing the company’s sole operational aircraft represents both a human tragedy and a devastating operational setback for the young carrier.

If investigators confirm a crash, this incident would mark Pakistan‘s first major civilian air disaster since May 2020, when a Pakistan International Airlines plane crashed short of the runway in Karachi, killing 97 of the 99 people on board. The country has experienced other aviation-related incidents, including a military helicopter crash in Kashmir that claimed at least 22 lives.

Aircraft’s Complex Service History Spans Multiple Operators

The missing Boeing 737-4M0(BDSF) has a lengthy operational history dating back to its delivery to Russia‘s Aeroflot as a passenger aircraft in 1999. The plane later flew for Garuda Indonesia in 2004 before undergoing conversion into a freighter configuration in 2012. Following its conversion, the aircraft operated for TNT Airways, then ASL Airlines, before eventually being acquired by K2 Airways in 2024. Aviation records confirm the aircraft began service with the Pakistani carrier in 2024, representing a new chapter in its quarter-century operational life across multiple continents and carriers.

The Boeing 737-400 series, while considered a reliable workhorse in both passenger and cargo configurations, requires rigorous maintenance protocols, particularly for older airframes that have undergone conversion from passenger to freight operations. The conversion process involves significant structural modifications, including reinforced flooring, cargo door installation, and the removal of passenger amenities. Maintenance standards and adherence to safety protocols become increasingly critical as converted freighters age and accumulate flight hours across diverse operational environments and climates.

Flight Data Reveals GNSS Interference Before Disappearance

Detailed flight playback data from Flightradar24 provides crucial insights into the aircraft’s journey. Shortly after takeoff, the plane, along with all other aircraft in the region, experienced GNSS interference, resulting in degraded data near Sharjah and forcing a transition to MLAT tracking by the flight-tracking service. Once the aircraft exited the area subject to GNSS interference, ADS-B data transmission resumed, providing granular information about altitude, ground speed, and vertical rate until the final moments of flight.

The navigational system fault reported by the crew coinciding with regional GNSS interference raises important questions about the aircraft’s ability to maintain stable flight control and navigation accuracy. Aviation safety experts note that modern aircraft employ redundant navigation systems designed to compensate for individual system failures, making the catastrophic loss of control evident in the flight data particularly concerning. Investigators will need to examine whether the navigational issues contributed directly to the loss of control or if other mechanical or technical factors played a role.

Regional Aviation Safety Under Scrutiny

The disappearance highlights ongoing aviation safety concerns in the region, particularly regarding aging cargo aircraft operating international routes. Cargo operations often involve older converted freighters that require enhanced oversight and maintenance compared to newer purpose-built aircraft. The Arabian Sea location of the incident, approximately 178 miles west of Karachi, presents significant challenges for search and recovery operations, as currents and weather conditions can complicate efforts to locate wreckage and retrieve critical components like flight data recorders.

The aviation community now waits anxiously for updates as search operations continue in the Arabian Sea, where environmental factors may hinder recovery efforts. The investigation into what caused the navigational system fault and subsequent loss of control will prove critical in preventing future incidents and ensuring the safety of cargo operations in the region. Aviation authorities from Pakistan, the United Arab Emirates, and Boeing will likely collaborate on the investigation once wreckage is located and recovered.