At 9:27 a.m. on 13 December 1943, Second Lieutenant Philip Adair guided his Curtiss P-40N Warhawk into a climbing turn above Assam, India. Through the morning haze, he saw a large Japanese formation approximately three miles to the east, moving directly towards Dinjan Airfield. It consisted of 24 bombers and about 40 escorting fighters.

Adair was 23 years old and had already completed 43 combat missions with the 89th Fighter Squadron. His unit helped protect the aircraft carrying vital supplies over the Himalayas along the dangerous route known as the Hump. Yet on that morning, when the approaching formation first came into view, he was the only Allied fighter pilot in an immediate position to respond.

The situation below made every minute important. During the previous eight weeks, Japanese attacks against Allied airfields in north-eastern India had reportedly destroyed 47 transport aircraft on the ground and caused the deaths of 112 personnel. Adair understood that another successful raid could interrupt supply operations for weeks.

His P-40, Lulu Belle, carried the number 44 and was armed with six .50-calibre Browning machine guns. Its ammunition supply allowed only a limited amount of sustained firing, perhaps about 12 seconds if every weapon was fired continuously. This meant that courage alone would not be enough. Every approach, burst and turn would have to be carefully judged.

The Japanese force was organised around Mitsubishi Ki-21 “Sally” bombers, protected by layers of Nakajima Ki-43 “Oscar” fighters flying above and below them. Similar raids in Burma had demonstrated how effectively tightly grouped bombers could strike an airfield when they met little resistance.

At Dinjan, 14 C-47 transport aircraft were reportedly waiting with supplies intended for Chinese forces. A field hospital was caring for 63 wounded soldiers, while nearby fuel stocks were sufficient to support Hump operations for approximately 11 days. These were not merely buildings and machines on a map. They represented medical care, transport capacity and a fragile supply connection on which thousands of people depended.

The nearest friendly fighters were based at Jorhat and were estimated to be 38 minutes away. Adair checked his instruments. His internal tanks contained approximately 180 gallons of fuel, enough for around 90 minutes at combat power under favourable conditions.

The enemy formation was roughly 3,000 feet below him and travelling at about 240 miles per hour. Normal doctrine advised pilots to avoid an engagement when outnumbered by more than five to one. Adair faced odds of approximately 64 to one. He could report the formation, remain at a distance and wait for assistance, but the bombers might reach Dinjan long before reinforcements arrived.

His alternative was to attack alone and attempt to disturb the formation. It was an extraordinary decision, but it also reflected the difficult arithmetic of airfield defence. Sometimes the purpose of an interception was not to destroy every aircraft. Breaking the bombers’ concentration, delaying their approach or forcing them to manoeuvre could be enough to reduce the accuracy of an attack.

Adair pushed the throttle forward. The Allison V-1710 engine responded as the manifold pressure climbed towards 54 inches. Lulu Belle accelerated to approximately 320 miles per hour. He moved to a position around 4,000 feet above the bombers and approached from the south, placing the sun behind him.

The Japanese escorts appeared not to have noticed him. Their attention remained fixed on the route ahead and on the airfield they expected to encounter approximately 20 miles later. Surprise was Adair’s only clear advantage, and he needed to use it before the escorting fighters could react.

He selected the leading bomber group as his first objective. Rather than becoming involved immediately with the more manoeuvrable Oscars, he intended to disrupt the bombers, scatter their formation and make an accurate, coordinated release more difficult.

The leading group consisted of six aircraft arranged in two formations of three. Adair rolled, lowered the nose and entered a steep approach from their high seven-o’clock position. His speed increased rapidly towards 360 miles per hour as the distance closed.

At approximately 800 yards, he opened fire. The six machine guns sent a concentrated burst towards the leading bomber. The rounds moved across its left wing and engine area, and the aircraft began trailing smoke. More importantly, the compact formation immediately started to separate. Bombers moved left and right, abandoning the stable geometry needed for a carefully aimed attack.

Adair pulled away under heavy gravitational pressure and rolled to the right. Above him, numerous Oscar fighters were already turning towards the unexpected attacker.

The Ki-43 was one of the most agile Japanese fighters used in the region. Its Nakajima Ha-115 engine produced approximately 1,150 horsepower, giving it a maximum speed of about 329 miles per hour at 13,000 feet. Its light construction and combat flaps enabled it to turn far more tightly than the heavier American fighter.

Japanese pilots understood this advantage and used it effectively. During the preceding six months, Oscars had been credited with numerous victories over Allied aircraft in Burma and north-eastern India. Entering a prolonged turning contest with them would place a P-40 pilot at a serious disadvantage.

Lulu Belle’s Allison V-1710-81 produced around 1,240 horsepower at 3,000 revolutions per minute. The P-40N could reach approximately 378 miles per hour at lower altitudes and was strong in a dive, but it lost energy more rapidly during sustained turns.

The established response was therefore simple: retain speed, make a brief firing pass, extend away and return from a better position. Yet Adair could not simply leave the area. If he withdrew too far, the bombers might reorganise and continue towards Dinjan.

Four Oscars approached from his high ten-o’clock position. Adair rolled left, lifted the nose and fired a short burst at the leading fighter. The rounds passed high, and the Japanese aircraft turned away. Adair reversed and descended to preserve his speed as two more fighters moved towards him.

His next burst also failed to find its target. The ammunition indicator suggested that approximately 800 rounds remained across the six guns. At the rate he was using them, he had only a small number of meaningful attacks left.

Behind the fighter screen, the bombers were already trying to regroup. Three groups of six were moving back towards formation. Adair estimated that he had little more than 90 seconds before they entered a position from which a coordinated bombing run could begin.

He levelled out, advanced the throttle and descended towards the bombers once more. Eight Oscars followed. The P-40 reached approximately 405 miles per hour in the dive, allowing it to create a temporary gap because the Japanese fighters could not safely match that speed.

At bomber altitude, Adair aligned Lulu Belle with the formation on the right. At about 300 yards, he fired. The burst converged around the leading bomber’s right engine. The aircraft lost its place, while a neighbouring bomber moved sharply aside to avoid it. Once again, the formation’s order was disturbed.

Adair used rudder to adjust his line and fired at another Ki-21. The bomber had limited protection compared with later aircraft. It lacked self-sealing fuel tanks and extensive armour for its crew. Although its mid-1930s design was showing its age by 1943, it could still carry roughly 2,200 pounds of bombs—more than enough to cause serious damage at an airfield.

Around 12 Oscars were now closing. Adair’s fuel gauge showed approximately 162 gallons, and the ammunition counter indicated about 650 rounds. The bombers remained around 19 miles from Dinjan, leaving perhaps four minutes before they could reach a suitable release area.

A new problem appeared on his instrument panel. The engine was becoming dangerously hot. The Allison was liquid-cooled, using coolant that moved through the cylinder heads and block before passing through a radiator beneath the fuselage.

At manifold pressures above 50 inches, the engine generated intense heat. The cooling system was not intended to remain indefinitely at such settings. Adair had been operating at high power for about 11 minutes, and the temperature had risen to roughly 230 degrees Fahrenheit. Normal operating temperature was closer to 210 degrees, while continued operation towards 250 degrees threatened serious damage.

He could reduce power and allow the engine to cool, abandon the interception or continue despite the risk. The bombers were still within effective range of the airfield. With no immediate replacement fighter available, he kept the throttle forward.

Two Oscars approached head-on. Their combined closing speed exceeded 600 miles per hour. Both opened fire from approximately 500 yards, sending 7.7-millimetre rounds towards the P-40. Adair returned fire, relying on the greater range and energy of his .50-calibre weapons.

At about 350 yards, his rounds reached the engine area of the fighter on the left. The Oscar turned away while trailing pale vapour, and its companion followed. Adair rolled right and descended. His coolant temperature had reached approximately 240 degrees.

The bombers were now around 15 miles from Dinjan. Two groups of six had recovered their bombing formations, while a third remained dispersed. Adair again aimed for the leading group.

Six Oscars attempted to intercept him, but the P-40 passed them in a high-speed descent at close to 390 miles per hour. At the bombers’ altitude, he levelled out and fired at the leading Sally. The burst struck the wing-root area, and the damaged aircraft departed the formation.

The remaining bombers separated once more. Even if they continued and released their loads, the loss of a compact formation would make it harder to concentrate them on the airfield. This was the strategic value of Adair’s decision: a single pilot could not dominate the entire sky, but he could impose uncertainty on every crew within it.

As he pulled away, the coolant gauge showed approximately 248 degrees. The engine ran unevenly, and vibration could be felt through the controls. Excessive heat was beginning to affect combustion inside the cylinders. Reducing power was no longer simply desirable; it was becoming essential.

Eight Oscars descended towards him. Adair noticed them late and rolled left, but he could not move quickly enough. Several 7.7-millimetre rounds struck the right wing. One damaged the right aileron control system, making the aircraft slow and heavy to respond.

Another burst reached the fuselage and engine cowling. A round damaged the coolant reservoir behind the firewall. Green coolant spread across the windscreen, the temperature passed 260 degrees and vapour began escaping through the cowling seams. Oil pressure also started to fall.

Adair reduced the throttle. Engine speed dropped from about 3,000 to 2,400 revolutions per minute, but the remaining power was insufficient to hold altitude. The P-40 descended first at approximately 1,000 feet per minute and then closer to 1,500.

Signs of fire appeared around the engine. In a liquid-cooled fighter, any fire near the fuel lines could quickly become uncontrollable. Standard procedure called for shutting down the engine and leaving the aircraft, but Adair was at only about 8,000 feet and remained over difficult terrain roughly 12 miles from friendly territory.

He used the mixture control, briefly moving it to idle cut-off for approximately three seconds to reduce the fuel reaching the engine. The intensity diminished. When he restored the mixture, the Allison coughed and resumed running, although it was rough and producing perhaps 60 per cent of normal power.

The Japanese bomber formation had now lost much of its original cohesion. Individual aircraft were moving towards the south-east, and the immediate pressure on Dinjan appeared to be easing. Adair turned towards his base at Nagaghuli, approximately 43 miles away. If the engine continued operating, the journey might take about 15 minutes. Six Oscars followed at a distance.

At 7,000 feet, the oil-pressure gauge dropped to zero. The Allison depended on circulating oil to protect the crankshaft, connecting rods and camshaft. Without lubrication, friction and heat would rapidly damage its internal components.

The vibration intensified and the propeller turned unevenly. Adair’s speed fell towards 180 miles per hour. The P-40 stalled at roughly 120, leaving an increasingly narrow margin between controlled flight and a loss of lift.

The Oscars approached to within about 400 yards but did not immediately fire. One moved alongside, close enough for Adair to see the pilot gesture downwards, apparently suggesting that he land. Adair continued towards Allied territory.

At approximately 6,000 feet, smoke began entering the cockpit from damaged electrical wiring behind the instrument panel. It irritated his eyes and throat. He opened the canopy, allowing the airflow to clear part of it, although the rushing air made breathing and concentration more difficult. His speed dropped to around 160 miles per hour.

At 4,000 feet, the damaged right aileron system deteriorated further. The aircraft rolled to the right and the nose lowered. Adair struggled against the controls as his speed increased through 200, 220 and then 250 miles per hour. Below him, the jungle seemed to approach with alarming speed.

The account describes an unconventional response. Adair reasoned that if the damaged controls were forcing one wing and the nose downward during upright flight, turning the aircraft upside down might reverse some of those aerodynamic forces.

At around 1,800 feet, he rolled Lulu Belle completely inverted. Negative gravitational force pressed him against his straps, and blood moved towards his head. The fuel system had not been designed for prolonged inverted flight, causing the engine to hesitate, but the nose rose and the descent slowed.

At approximately 1,200 feet, the P-40 levelled while inverted at about 140 miles per hour. Adair held that attitude for roughly 40 seconds. His speed increased towards 160, and the aircraft even gained altitude at an estimated 50 feet per minute.

Fuel starvation then caused the engine to falter. He rolled upright so that fuel could feed normally, but the damaged controls again lowered the nose. After losing about 300 feet, he rolled inverted once more and recovered around 200 feet before repeating the process.

The pattern became a demanding cycle: inverted to reduce the descent or climb slightly, upright to restore fuel flow, then inverted again. It was physically exhausting and contrary to normal procedure, yet the narrative presents it as a practical response to an aircraft whose conventional controls were no longer behaving predictably.

The six Oscars watched from above. One descended to investigate, but Adair rolled and briefly pointed the P-40 towards it. The Japanese fighter withdrew, and the group eventually turned east. Whether they regarded the damaged aircraft as no longer threatening or simply chose not to pursue it farther, their departure gave Adair a final opportunity to reach home.

His fuel gauge showed approximately 83 gallons, while the oil-pressure needle had remained at zero for nine minutes. By ordinary mechanical expectations, the engine should already have stopped. Whatever lubrication remained on its internal surfaces was providing only temporary protection.

Adair gradually reached 3,000 feet and then 4,000. Nagaghuli remained about 21 miles away, perhaps 11 minutes at his reduced speed. The coolant gauge no longer provided useful information, and smoke continued to trail behind the aircraft, although the visible fire had diminished.

At around 5,000 feet, he saw the airfield. Safety was finally visible, but landing introduced another series of problems. The undercarriage relied on an engine-powered hydraulic system, and the failing Allison might not provide enough pressure to lower it.

A wheels-up landing could damage the remaining fuel tanks and increase the risk of fire. Yet lowering the wheels too early would add drag, and the engine might then fail before the runway was within reach.

Adair pulled the gear lever down. Nothing happened. The hydraulic system normally operated at around 1,000 pounds per square inch, but the engine-driven pump could no longer create sufficient pressure.

The P-40 included a manual emergency pump on the left side of the cockpit. Approximately 28 strokes were required to pressurise the system and lower the landing gear. Adair tried to operate it with one hand while holding the control stick with the other, but this did not produce enough force.

He loosened his lap belt, wrapped it around the control stick and secured it to the seat frame. The improvised restraint kept the stick close to neutral—not perfectly, but well enough for a short period. He then used both hands on the pump.

After five strokes, then ten and fifteen, the wheels remained retracted. At approximately the twenty-third stroke, he felt resistance as pressure began to build. By the twenty-eighth, the left main wheel extended and locked. The right followed around three seconds later.

The extended gear increased drag. Airspeed fell from roughly 160 to 135 miles per hour, still above the stall but with little reserve. Nagaghuli was approximately seven miles away, perhaps three minutes of flight.

Adair’s vision was narrowing. Smoke had been entering the cockpit for around 14 minutes, raising the possibility of carbon-monoxide exposure. He focused on the runway as the distance fell to six miles and then five. An engine-temperature instrument showed about 310 degrees, far beyond its normal limit.

Ground personnel saw the damaged P-40 approaching with smoke behind it and the wheels extended. A conventional landing required flaps, but the flaps also used hydraulic pressure. Adair had barely generated enough to lower the undercarriage, so the flaps remained retracted.

Without flaps, he would have to land at approximately 120 miles per hour rather than around 90. The 4,000-foot runway offered limited room. A damaged P-40 making a flapless landing could require at least 3,000 feet to stop.

Two miles from the runway, the Allison finally stopped. The propeller slowed and ceased turning, leaving Lulu Belle without thrust. A normal P-40 had a glide ratio of roughly eight to one. From 2,000 feet, that could provide close to three miles of horizontal distance, but battle damage and the extended landing gear reduced its performance, perhaps towards six to one.

The runway appeared just beyond comfortable gliding range. The account describes Adair again using inverted flight in an attempt to reduce drag at a particular attitude. At approximately 1,800 feet and one mile from the runway, he rolled upside down.

His speed held near 125 miles per hour. The descent rate reportedly improved from about 700 to approximately 500 feet per minute. From the ground, the sight was bewildering: an inverted P-40 approaching with its landing gear extended and smoke trailing from the engine area.

Technical Sergeant Robert Martinez watched through binoculars. For a moment, he wondered whether the unusual aircraft was hostile. He and several crewmen moved towards a .50-calibre defensive position, then studied the approaching fighter more carefully.

Adair was at roughly 400 feet and half a mile from the runway threshold. Smoke exposure and negative gravitational forces were affecting his vision. He believed he had perhaps 20 seconds of useful consciousness remaining.

Rolling upright too early would allow the damaged controls to force the nose down before he reached the runway. Rolling too late could leave insufficient time to stabilise the aircraft. At around 200 feet and 300 yards from the threshold, he returned the P-40 to an upright attitude.

The right wing immediately dropped. Adair applied opposite pressure, levelled the wings as far as possible and pulled back against the damaged elevator system. Only partial control remained, but it was enough to keep the aircraft pointed towards the runway.

Martinez and the defensive crew followed the aircraft with their weapon but withheld fire. The P-40 crossed the threshold at approximately 90 feet and descended steeply. The main wheels contacted the runway firmly, compressing the undercarriage.

The right main gear then collapsed. The wingtip touched the surface, and the aircraft turned around while sliding for approximately 200 feet. It finally stopped with smoke rising from the engine compartment.

Emergency crews hurried towards Lulu Belle. Adair remained still for about 12 seconds, then released his shoulder straps and climbed onto the wing. His legs gave way, but ground personnel reached him and helped him down.

Inspection showed severe damage. The engine had suffered from overheating and the loss of oil and coolant. The airframe reportedly contained 16 bullet holes in the fuselage, seven in the right wing and four in the left. One round had damaged the right aileron control, another had punctured part of the hydraulic system, and others had affected electrical wiring behind the instrument panel.

Lulu Belle would not return to combat. Yet the wider meaning of the engagement did not depend solely on the number of aircraft claimed. By attacking a much larger force, Adair forced numerous crews to react to him instead of concentrating entirely on their assigned objective.

Three days later, on 16 December 1943, Tenth Air Force personnel interviewed him about the encounter. Flight surgeons also assessed the physical effects of smoke exposure, fatigue and the extreme forces experienced during the return.

On 8 January 1944, Lieutenant General Joseph Stilwell presented Adair with the Silver Star for gallantry. The recognition reflected his willingness to engage a greatly superior force and continue despite damage to his aircraft.

Adair later flew many more combat missions with the 80th Fighter Group and achieved ace status. During a later engagement over northern Burma, he was credited with further victories against Ki-43 fighters. He returned to the United States in 1944, survived the war and continued serving in the Air Force for decades before retiring as a colonel in 1971.

The 80th Fighter Group—the Burma Banshees—continued operating until the final months of the war. Its distinctive skull emblem became one of the best-known markings of the China-Burma-India theatre, but behind that symbol were pilots, mechanics, medical staff and transport crews working under constant pressure.

The P-40 never acquired quite the reputation of the P-51 Mustang or P-47 Thunderbolt. It was less effective at very high altitude and was increasingly regarded as an older design by 1943. Nevertheless, it remained strong, fast in a dive and dependable when operated by pilots who understood its limitations.

Adair’s experience illustrates a broader truth about aviation history. Technical specifications shape what an aircraft can do, but they never tell the complete story. Training, judgement, endurance and the ability to make decisions while frightened and exhausted can be equally decisive.

It is easy, decades later, to reduce an engagement to numbers: one P-40, 24 bombers, approximately 40 fighters and odds of 64 to one. The human reality was more complicated. A young pilot had only seconds to decide whether to protect himself or attempt to delay an attack that threatened an airfield filled with other people.

His decision did not make him immune to fear, and courage should not be understood as the absence of it. Courage is often the decision to continue while fully recognising the possible cost. That is what gives this account its lasting emotional weight.

The story of Philip Adair and Lulu Belle therefore deserves to be remembered not as a celebration of destruction, but as an examination of responsibility, skill and perseverance during an exceptionally difficult period of history. Preserving such accounts also means remembering the wider human cost of war and treating every extraordinary claim with care, context and respect.

If historical aviation stories like this help keep the experiences of an earlier generation in view, share your thoughts and mention whether someone in your family served in the China-Burma-India theatre. Thank you for reading, and join us for the next account from aviation history.