Kilo Flight

Kilo Flight is the code name for the Mukti Bahini combat aviation formation during the Bangladesh Liberation War in 1971. It consisted of one DHC-3 Otter plane and one Alouette III helicopter, both carrying rocket pods and machine guns for launching hit-and-run attacks on Pakistani targets, and one DC-3 Dakota for logistical missions. 9 Bengali pilots and 50 ex PAF personnel formed the unit under the command of Group Captain A. K. Khandker in September 1971. The aircraft were supplied by Indian Authorities and the formation was led by Flight Lieutenant Sultan Mahmud under the operational control of IAF base Jorhat. The unit started training in October 1971 at Dimapur in Nagaland, and this unit was the first to launch airstrikes on Pakistani targets in occupied Bangladesh on December 4, 1971 by attacking oil depots at Narayanganj and Chittagong. In total the unit flew 90 sorties and 40 combat missions between December 4 and December 16, 1971. After the war it formed the core of the nascent Bangladesh Air Force.

Background
The Partition of British India led to the assets and personnel of British Indian Armed Forces being divided between India and Pakistan in 1947. Pakistan concentrated most of her military assets in West Pakistan, and the first combat aircraft deployed in East Pakistan was a squadron of Hawker Fury biplanes in 1956. No. 14 squadron flyng F-86 Sabres were stationed in East Pakistan in 1964, and during the War of 1965 they earned the name "Tail Choppers" by launching successful raids on the Indian Air Force base at Kalaikunda, near Kharagpur in West Bengal, destroying several English Electric Canberra and de Havilland Vampire bombers on the ground. In March 1971, PAF Eastern Contingent under the command of Air Commodore Mitty Masud, had 1,222 personnel, of which 645 were of Bengali origin, and two fully operational bases at Tejgaon and Chittagong. PAF had 20 Canadair Sabre (No. 14 Squadron Tail-choppers OC Wing Commander Muhammad Afzal Chawdhary), two T-33 trainers, and two Aerospatiale Aoouette III helicopters stationed in East Pakistan, while Pakistan Army "Log Flight" of Army Aviation Squadron No. 4 under Major Liakat Bukhari contained two Mil Mi-8 and two Alouette III helicopters in East Pakistan.

Bengali servicemen and political concerns
The victory of Awami League in the 1970 elections was followed by a period of political uncertainty as General Yahia Khan delayed the transfer of power to Awami league. This eventually led to Awami League launching a non cooperation movement that eventually confined the authority of the Central government to the cantonments and government institutions in East Pakistan. Pakistani government decided to launch a military crackdown and began to move soldiers in civilian clothes to Dhaka using PIA and PAF aircraft from February 1971.

Bengali military officers, alarmed by the buildup of Pakistani forces and concerned about their own safety, maintained contact with Awami League and MAG Osmani and sought advise. The Awami League leadership, attempting a political solution, did not endorse any preemptive action or preparation for conflict by Bengali soldiers. Warnings by Bengali officers that the Pakistan Army was preparing to strike were ignored, and junior Bengali officers were told by their superiors to be prudent and avoid political issues. Osmani also advised the Bengali officers against "rash" actions. The Pakistan Army caught the Bengali political leadership and soldiers by surprise.

Bengali PAF personnel in Mukti Bahini
Initial Bengali resistance to Pakistani Military action was spontaneous and disorganized. Bengali soldiers were largely unaware of the larger situation; many units continued to performed routine duties until 31 March, rebelling only after coming under Pakistani attack. Group Captain A.K. Khandkar, OC Admin Wing of PAF East Pakistan, had witnessed the departure of Yahia Khan from East Pakistan prior to start of Pakistani attack on March 25th and warned Awami League members, and he had earlier also warned Sheikh Mujibur Rahman regarding Pakistani troop movements. However, no countrywide communication reached Bengali soldiers to begin the uprising; they rebelled when they came under attacked or heard news of the Pakistani attacks on Bengalis. Air Commodore Mitty Masud had opposed Operation Searchlight on moral grounds in a meeting of Pakistani Senior officers on March 15 and then had refused requests from the Army to commence airstrikes on March 29th. He also assured Bengali PAF staff of their personal safety on March 27 and on March 30 gave them the option of declining missions or going on leave, but also warned them against comitting treason, and Bengali airmen and staff were laid off duty. Air Commodore Masud was relieved of his post on March 31st, and was replaced by Air Commodore Inam -ul Haq. Several hundred Bengali officers and soldiers, airmen and Naval personnel were sent to West Pakistan between March and November 1971, while Pakistan Army imprisoned 21 army and 4 air force officers and several hundred soldiers in East Pakistan. However, while 46 Bengali Army officers were murdered by the Army between March–November 1971, no Air Force officers were victims of such a fate during that time.

After March 26, Pakistani Army was initially confined to a handful of bases across the province, cut off and surrounded by the Mukti Bahini, but by mid April the Army had occupied all the large towns and by mid June Mukti Bahaini had been driven across the border into India. Serving and retired PAF personnel along with Bengali soldiers and officers had begun to join Mukti Bahini after March 26th. Eight Bengali officers of the PAF, including Group Captain Khandker, had crossed the border in mid-May, and eventually 44 officers and 729 airmen would join up between March–October 1971. Of the 44 officers, 10 came out of retirement, 8 were officer cadets of PAF, 9 joined while on leave in Occupied Bangladesh, and 3 officers came from postings abroad. These men will go on to earn one Bir Shreshtho, 5 Bir Uttam, 1 Bir Bikram and 11 Bir Protik medals for their contribution in the liberation war, while 17 Bengali Officer would continuue to serve in the PAF in East Pakistan until December 16, 1971.

Bengali airmen in Mukti Bahini
The Indian Army had been helping the Mukti Bahini, through Operation Jackpot, since May 1971, while the Indian Navy helped set up the Bengali Naval commando unit and then provided command staff for the Bengali gunboats, which were used to mine riverine craft and harass merchant marine operations in East Pakistan. The IAF had flown reconnaissance flights over East Pakistan since June 1971, but could not come to grips with the PAF until formal hostilities commenced. Former PAF officers and personnel were employed in various Mukti Bahani formations engaged in guerrilla warfare as they joined up, since Mukti Bahini lacked any aircraft or air defense equipment. Group Captain Abdul Karim Khandker became the deputy Chief of Staff of Mukti Bahini, Wing Commander Khademul Bashar, a veteran B-57 pilot, became Commander of Mukti Bahini Sector 6 with Squadron Leader Sadruddin as his deputy, F. Lt Sultan Mahmud led a guerrilla squad in Sector 1 before joining Kilo flight, F. Lt M. Hamidullah Khan eventually commanded Sector No. 11. During June –July, Mukti Bahini had regrouped across the border with Indian aid through Operation Jackpot and began sending 2000 – 5000 guerrillas across the border, the so-called Monsoon Offensive, which for various reasons (lack of proper training, supply shortage, lack of a proper support network inside Bangladesh etc.) failed to achieve its objectives. Bengali regular forces also attacked BOPs in Mymensingh, Comilla and Sylhet, but the results were mixed. Pakistani authorities concluded that they had successfully contained the Monsoon Offensive, and they were not far from the truth. Between March and November, 46 Bengali airmen died in combat.

Mukti Banini Air wing?
Group Captain Khandker, after becoming the Deputy Chief of Staff of Bangladesh Forces on July 19, 1971, continued to engage Bangladesh Government in Exile and Indian officials regarding obtaining aircraft for Mukti Bahini, being concerned that Bengali pilots were losing their skills due to lack of flying and the possibility of launching air attacks against Pakistani targets between May and September. Mukti Bahini lacked international recognition as a separate sovereign legal entity, so the Indian Government could not sanction IAF to offer any modern aircraft or use of its official facilities to Mukti Bahinia. Bengali diplomats who had left their posts had sent information on aircraft procurement during April - August 1971 to Bangladesh Government, the purchase cost was to be funded by Bengali diaspora, but this ultimately did not materialise.

Air Chief Marshall P.C. Lal, then Commander of IAF, Mrs Ila Lal and Khandker had met for dinner in August, and the idea was again discussed. IAF then offered to donate two De Havilland Vampire for Mukti Bahini, or absorb Bengali pilots into Indian Air formations. The Vampire aircraft were obsolete, and Bengali pilots were training in different aircraft, so Mukti Bahini did not take up the offers. P.C. Lal, howevere, gave a positive recommendation to the Indian government for giving Mukti Bahini an air wing, and a few days later, IAF agreed to provide non combat aircraft, logistical support and a training ground to Mukti Bahini. Khandker began to select pilots and airmen for Mukti Bahini Air wing from September 24th, 1971.

Formation and training


Seven Bengali pilots and Fifty technicians - formerly of the PAF and then serving with the Mukti Bahini in various capacities - were gathered for a special mission by September 24, 1971 at Dimapur in Nagaland. Indian civilian authorities and the IAF donated 1 DC-3 Dakota (given by the Maharaja of Jodhpor), one DHC-3 Otter plane that had been in service with the IAF since 1959, and 1 Alouette III helicopter for the newborn Bangladesh Air Force. Bengali pilots were assembled at Dimapur on September 12, 1971, some of them were flown in from Agartala. Training commenced from September 14th, Captains Mukeet, Khaleque, Shahabuddin and Satter were selected to fly the Dakota, Captains Akram, Sharafuddin and Flight Lt. Shamsul Alam were train in the Otter. Flight Lt. Sultan Mahmud and Bardul Alam, experienced PAF Helicopter pilots, were to fly the Alouette. Captain Shahabuddin was later assigned to the Alouette crew.

These propeller driven aircraft were to take advantage of the lack of night-fighting capability of the PAF to launch hit-and-run attacks on sensitive targets inside Bangladesh from the air. Khandker, along with Flight Lieutenant Shamsul Alam (who escaped from Pakistani captivity on August 5th) flew to Dimapur via Gauhati on September 24th, and in the presence of Air Chief Marshall P.C. Lal, took delivery and inaugurated the newly formed Bangladesh Air Force. The unit officially became active on September 28, 1971 – birth day of Bangladesh Air force. The unit was dubbed” Kilo Flight” on October 4th, 1971, the first fighting formation of the nascent Bangladesh Air force.

Pilots
Nine pilots were assembled at Dimapur to fly the 3 aircraft. Flight Lieutenant Shamsul Alam, along with Flying Officer Badr-ul Alam, were PAF trained pilots. They were later joined on October 2, 1971 by Flight Lieutenant Sultan Mahmud, who had been previously wounded in a guerrilla operation in Chittagong, which had delayed his arrival, and he became the Commanding Officer of this unit. Captains Alamgir, Kazi Abdus Sattar, Shahabuddin Ahmed and Abdul Mukeet were F-27 pilots from PIA, while Captain  A.S.M.A Khaleque was a PIA veteran with 10,000 hours in a Boeing 707. Captain Akram Ahmad worked for East Pakistan Plant Protection Agency, and Captain Sharafuddin, deputed to the same agency, was actually an employee of Ciba-Geigy company.

Dimapur had a World War II era 5000 ft runway, a single control tower and some building, all surrounded by dense jungle. Bengali rank and file fixed up the World War II vintage runway at Dimapur, then took over the servicing duties for the 3 aircraft. Logistics and administration was coordinated by Group Captain Chandan Singh, station commander of IAF base Jorhat. After a few days of test-flying, the aircraft were taken and refitted at various IAF service stations.

Refitted Kilo Flight aircraft
The Otter boasted 7 rockets under each of its wings and could deliver ten 25 pound bombs, which were rolled out of the aircraft by hand through a makeshift door. Flight Lt. Shamsul Alam, along with Captains Akram Ahmed and Sharfuddin Ahmad, flew the Otter - all three were later awarded Bir Uttam for their service in 1971. Flight Lieutenant Ghosal of IAF was the trainer for the Otter.

The Dakota was modified to carry ten 500 pound bombs, for low level bombings. A section of the floor was cut off and a jury rigged devise was installed to drop the bombs on target. Near the back door of the Dakota, a bomb rack was installed to hold 5 1000 pound bombs. An officer was to manually push them off the rack and one second interval, after the pilot signaled him with a bell. Captain Abdul Khaleque, Captain Alamgir Satter, and Captain Abdul Mukit, all destined to earn the Bir Pratik award, piloted the Dakota. Flight Lieutenant Sinha of IAF was the instructor and flight safety officer.

The helicopter was rigged to fire 14 rockets from pylons attached to its side and had a twin-barreled .303 Browning machine gun installed underneath the main helicopter pod, in addition to having 1 in steel plate welded to its floor for extra protection. Squadron Leader Sultan Mahmood, Flight Lieutenant Bodiul Alam, and Captain Shahabuddin, all of whom later won the Bir Uttam award, operated the helicopter. Squadron Leader Sanjay Kumar Chowdhury and Flight Lieutenant Chandra Mohan Singla oF IAF was attached as trainers.

Flying and firing training


The propeller driven aircraft were slow, and would be no match for the F-86 Sabre aircraft of Pakistan Air Force and flying them in broad daylight for low level strafing and bombing also risked getting hit by anti aircraft fire. While the Bengali pilots went through their induction training on the aircraft with their IAF trainers, BAF and IAF command decided that initial missions would be carried out at night. The aircraft would fly low to avoid Rader detection, then pop up to hit their targets, then fly back to base. Bengali pilots became proficient in the risky task of night flying and firing, while the Bengali crew serviced the aircraft during the day to keep them operational. All technical glitches were also ironed out, in one case, when it was found that the fuse of the 57 mm rockets were hitting the tail rotor of the helicopter when the rockets were fired, the fuses were changed.

Under the command of Squadron Leader Sultan Mahmud, guided by the Indian instructors, intense training took place in night flying and instrumental navigation. Dimapur was a remote place surrounded dense jungle, so the training went unnoticed. A white parachute was dropped on a tree to serve as target, pilots would take off after 12 at night, navigate to their destinations, locate their target in the dark visually and practice, diving, low angle approach, hitting the target with rockets and machine gun fire and then flying back.

Planned initial missions
After 2 months of training, the formation was activated for combat. Group Captain Chandan Singh briefed A. K. Khandker of the first three possible missions, the Dakota would bomb Dacca Airport, the helicopter was to hit the Air Fuel dumps at Godnail near Narayanganj, and the Otter would attack the Eastern Oil Refinery at Chittagong. The Otter and the Alouette would have to refuel on the way to their targets as after starting from Dimapur as the targets lay outside their operational range.

Two changes were made before the final missions took place. It was found that when the Dakota pulled up in full throttle after its bombing run, the engine exhaust flames were clearly visible, making them an easy mark for anti aircraft gunners, so the risk was deemed unacceptable and their mission was cancelled. The Dakota was sent to Barrakpur after November 2, 1971. and used to transport Bangladesh government officials and send supplies to remote areas. Bangladesh Government and Bangladesh force commanders vetoed the planned attack on the refinery, pointing out that it was essential for Bangladesh to have it intact and operational after Bangladesh was liberated. The target for the Otter was switched to the fuel dumps of the refinery. The IAF command, aware of the significance of the Bangladesh Liberation War, allotted the honor of first strike against Pakistan from the air to Bengali pilots.

The first sortie was scheduled to take place on 3 November 1971, then it was moved to 28 November, but again was moved back 6 days, to 2 December 1971. The Kilo flight pilots were flown to Jorhat for their final briefings on December 1, 1971 then assembled at Kilashhar. The Otter - flown by Flight Lt. Shamsul Alam, with co-pilot Captain Akram - was moved to Kailashsahar, and was prepared for a mission against targets in Chittagong. The helicopter, piloted by Flight Lt. Sultan Mahmud and Flight Lt. Bodiul Alam, was to hit Narayangang, flying from Teliamura.

First blood: Kilo Flight strikes
Pakistan Air Force initiated Operation Chengis Khan on December 3, 1971 against several IAF bases in the Western Front around 6:00 PM in the evening. In response, Kilo flight Otter and helicopter took off to hit their respective targets. The night was a foggy faintly moonlit one.

The Otter, piloted by FL Shamsul Alam, with Captain Akram as Co pilot, took off from Kilashahar Airport around 9:00 PM. They were accompanied by LAC Rustam Ali, air gunner, and Corporal Mujammel Haque,  the designated bomb aimer in the rear cabin. With the aid of a compass, Captain Akram navigated the airplane as it flew 25 miles to Teliamura, blinked their lights a few times, and where kilo flight personnel fired a flare to signal the aircraft that they were on course. The otter flew lower and lower to the ground to avoid Rader detection and to navigate through the mist, and after an hour made it to Chittagong, which was 140 miles to the south. The city was observing a blackout, only lights visible were some ships anchored at the port. The Aircraft turned southeast, located Chittagong Airport, then made a shallow dive to hit two fuel tanks with two rockets. It then made a second rocket attack on the depots and was met by anti-aircraft fire. The otter pulled up, and on its way out hit a ship with rockets, then flew back north to Kumbhirgram Airport. The otter pilots returned to Kilashahar the following day.

After the Otter had passed Teliamura, FL Sultan Mahmud, accompanied by Bodiul Alam and Sergeant Shahidullah,   took off in the Alouette III heading for Akhaura. The helicopter flew low and as they passed Akhaura, machine gun and small arms fire from both Pakistani and Indian forces targeted the craft. Mukti Bahini and Indian army had attacked Pakistani positions on November 30th and the troops on the ground were on edge. Having crossed the warzone, the helicopter reached Eliotganj on the Dhaka Comilla Highway, then turned to follow the road flying at treetop levels towards Demra. On the way the helicopter narrowly avoided colliding with electric poles several times. The Helicopter turned south towards Narayanganj along the Shitolakha river, and at one time the crew realized they were flying very close to the water and had flown below some electric lines in the dark. After reaching the Godnail depot, the helicopter hit the fuel tanks with rockets, and then returned to Teliamura, completing the three hour round trip with 12-15 minutes of fuel left.

Further missions
The Unit moved from Kailashahar to Agartala to cut down fuel usage and turn around time after December 4, 1971, and used Shamshernagar as a forward base. The Otter flew twelve and the Alouette seventy-seven sorties between December 4 and December 16, 1971, about 40 of them were combat missions to attack ground targets in Sylhet, Comilla, Daudkandi and Narshigndi.

The Otter, piloted by Captan Akram, flew several sorties and hit Pakistani positions in Syhlet on December 5 and again on December 6 while on December 6th FL Sultan Mahmud and Captain Shahabuddin flew four sorties in the helicopter and rocketed Pakistani troops in Sylhet, Maulivibazar and on the River Kushiyara. On December 7th, Indian Army used helicopters to land troops in Sylhet the Alouette, piloted by FL Singla of IAF and Sultan Mahmud and provided fire support and rocked and strafed targets near the Sylhet Circuit house and on Pakistani positions along the river Surma to contain the Pakistani attacks. The Aleoutte was repeatedly hit by small arms fire during these missions but sustained no significant damage.

The Alouette, piloted by FL Mahmud and Captain Shahabuddin, attacked Pakistani troops retreating from Sylhet to Bhairab on December 8th while Captain Sharafuddin in the Otter attacked Pakistani troops crossing the Kushiyara river on December 6th, 7th and December 8th several times, and after one sortie skillfully landed the craft after it’s tail rotor was hit by small arms fire near Maulavibazar. Pakistan army had destroyed the Bhairab bridge and on December 9th Meghna Heli Bridge dropped Mukti Bahini and India Soldiers at Riapura near Narshindi, Klo flight crafts were part of the air cover. Captain Shahabuddinn in the Alouette flew an unsuccessful sortie to rescue Squadron Leader R.C Sachdeva, who had bailed out near Naryanganj on December 10th. The Alouette attacked Pakistani positions near Narshigndi on December 11 while the Otter flew several missions near Narshindi between December 11–15, 1971. The Otter, flown by Fl Shamsul Alam, was the first fixed wing aircraft to land at Tezgaon on December 17th, after the unconditional surrender of Pakistani Forces to the Joint Command of Bangladesh and Indian Forces the previous day.

Aftermath
Tezgaon airport was made operational by December 25th, 1971 through the joint efforts of Indian and Pakistani airmen and engineers and Bengali workers. Kilo flight relocated to Tezgaon during that period. The newly formed Bangladesh Air Force lacked trained personnel and for some time the base was administered by IAF Air Commodore Kingly. Bangladesh government awarded six Bir Uttam medals (Flight Lieutenant Sultan Mahmud, Shamsul Alam, Badrul Alam, Captain Akram Ahmed, Shahabuddin Ahmed and Sharafuddin) and six Bir Protik medals (Captains A.S.M.A Khaleque, Kazi Abdus Satter and Abdul Mukeet, Sergeant Shahidullah, Corporal Muzammel Haque and LAC Rustom Ali) to Kilo Flight Personnel. IAF awarded Vir Chakra to Squadron Leader Sanjay Kumar Chowdhury and FL Chandra Mohan Singla for their service in Kilo Flight.

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Under the leadership of Air Commodore A. K. Khandker, the newly formed Bangladesh Air Force began to organize itself. The DC-3 was given to Bangladesh Biman, however, it ceashed during a test flight, claiming the life of Kilo flight members Captain Khaleque and Sharafuddin. Former PAF personnel and officers were requested to muster in Dhaka over radio and the personnel were grouped into three squadrons under one operational wing under Squadron Leader Manjoor. Squadron Leader Sultan Mahmud commanded Squadron No. 501, Squadron Leader Sadruddin Squadron No. 507 and Wahidur Rahman commanded the third squadron. Pakistan forces had abandoned eleven Canadair F-86 Sabre jets, two T-33 Shooting Stars, one Alouette III and one Hiller UH-12E4 helicopter in Dhaka. The airplanes had been scuttled by cutting their wirings and small arms fire before the surrender by Pakistani forces. The Hiller was taken over by Bangladesh Army, while Bengali airmen set to work on fixing the aircraft. By March 1972, 8 Sabers, one T-33 and the Alouette were airworthy. Five Sabers, the lone T-33 and the Alouette were activated for service. On March 26, 1972, to mark the first anniversary of Independence day, Bangladesh Air Force staged a fly past with 2 F-86 Sabre, one T-33, 3 Alouette and one DHC-3 Otter. These aircraft remained operational until replaced by more modern aircraft after 1973.