Search and rescue teams launched a major operation in the Arabian Sea after a Pakistan registered cargo aircraft carrying five crew members disappeared Tuesday night while approaching Karachi following a reported navigation system malfunction.
The Boeing 737 freighter, operated by K2 Airways, was flying from Sharjah in the United Arab Emirates to Karachi when it encountered technical difficulties before vanishing from radar, aviation officials said.
The Pakistan Airports Authority said the crew reported a navigation system problem at about 9:18 p.m. local time while en route to Karachi.
Air traffic controllers attempted to guide the aircraft after receiving the distress report. However, radar data indicated the plane made a sudden change in direction before rapidly losing altitude approximately three minutes later.
Communication with the aircraft was lost about 155 nautical miles, or roughly 287 kilometers, west of Karachi.
Authorities immediately activated Pakistan’s Rescue Coordination Center and launched a coordinated search involving military and civilian agencies across the Arabian Sea.
Officials said the Pakistan Navy diverted the frigate PNS Zulfiqar to the area where the aircraft disappeared. The Pakistan Air Force also deployed aircraft, while a Pakistan Navy ATR surveillance aircraft departed from Turbat to assist in the search.
A vessel operated by the Pakistan National Shipping Corporation also joined the operation.
K2 Airways said it is cooperating fully with the Pakistan Civil Aviation Authority and other government agencies investigating the disappearance.
“We continue to pray earnestly for the safety of our colleagues,” the airline said in a public statement.
Flight tracking information reviewed by Reuters indicated the aircraft experienced a series of unusual altitude changes before its final descent.
According to Flightradar24, the aircraft descended approximately 5,000 feet in less than one minute, briefly climbed about 6,000 feet within 30 seconds, and then entered a steep final descent.
The last transmitted data placed the aircraft at about 1,100 feet above sea level while descending at an exceptionally high rate.
Anthony Brickhouse, an aerospace safety consultant, said the flight data showed highly unusual aircraft behavior but cautioned against drawing conclusions before investigators recover additional evidence.
“It is too soon to determine what caused the aircraft to disappear,” he said.
Local aviation analyst Imran Aslam also expressed surprise at the reported flight profile, noting that even aircraft experiencing engine failure would normally glide rather than descend so abruptly.
The aircraft involved was a Boeing 737 400 freighter, a converted cargo aircraft from Boeing’s earlier generation 737 family. Flight tracking records indicate it originally entered service as a passenger aircraft before being converted into a cargo plane in 2012.
According to Flightradar24, the aircraft entered service with K2 Airways in 2024 and was the airline’s only aircraft.
What We Know So Far
The cargo aircraft departed Sharjah for Karachi carrying five crew members.
The crew reported a navigation system malfunction shortly before contact with air traffic controllers was lost.
Radar data showed sudden altitude fluctuations followed by a rapid descent over the Arabian Sea west of Karachi.
No distress signal beyond the reported navigation issue has been publicly disclosed, and authorities have not confirmed whether the aircraft crashed.
Search operations involving naval vessels, military aircraft and civilian agencies remain underway.
What Authorities Are Saying
Pakistan Airports Authority said search and rescue efforts were launched immediately after radar and radio contact with the aircraft ended.
K2 Airways said it is cooperating with investigators while expressing hope for the safety of the crew.
Aviation experts cautioned that the available flight data alone cannot determine the cause of the incident and stressed that a formal investigation will be required if the aircraft is located.
Why This Matters
The disappearance has renewed attention on aviation safety in Pakistan, where the country’s last major commercial aviation disaster occurred in 2020 when a Pakistan International Airlines passenger aircraft crashed while attempting to land in Karachi, killing 97 people. A government investigation later concluded that pilot error and failures in air traffic control procedures contributed to the tragedy.
Although cargo aircraft generally operate under different commercial conditions than passenger airlines, unexplained losses remain rare and typically trigger extensive international aviation investigations.
The incident also raises questions about the aircraft’s reported navigation system malfunction and whether mechanical failure, environmental conditions or another factor contributed to the disappearance. Aviation investigators are expected to analyze radar records, maintenance history, communications and any recovered flight recorders if wreckage is located.
What Happens Next
Search teams are expected to continue operations across the Arabian Sea until the aircraft or evidence of its location is found.
If wreckage is recovered, Pakistani aviation authorities are expected to launch a formal accident investigation, potentially with technical assistance from international aviation experts and the aircraft manufacturer.
Authorities have not released the identities of the five crew members, and no information has been provided regarding possible survivors.
Sources: The Associated Press (AP); Reuters
