Sierra Sue II
The Story of a P-51 Mustang
Great Planes Press
ISBN 0-7388-0889-X
Chapter One
Wednesday and Thursday
North of the Minnesota River, between the two small prairie towns
of Belle Plaine and Jordan, the country is dark green, hilly and
rugged. South of the river it is bottomland and flat pasture marked
by an occasional silver-domed silo sticking up. Patches of woods
are splattered like green Rorschach blotches on the otherwise brown
landscape. The sky over this ten mile stretch is outside commercial
traffic lanes and the FAA control zone. It is remote airspace,
the perfect location for practicing aerial combat maneuvering at
sunset. Doc climbed to 6500 feet and positioned himself just over the crude
grass strip of the Belle Plaine Airport. He closed the radiator
scoop door on the belly of Sierra Sue II and made two quick turns,
standing her on her left wing, then her right wing to check for
any traffic below. The beginning of his workout was always the same: a zoom-dive heading
east to start a huge loop that took him over the top at 9000 feet.
What followed was never the same from day to day: a varied sequence
of loops, Immelmanns, Cuban eights, reverse Cuban eights, aileron
rolls and tight slewing turns which were all tied together in a
continuous east-west drift. Sometimes it was one loop instead of
two, or three Cuban eights. He varied the order too, depending
on speed, altitude and position at the end of each maneuver. The finish was also always the same: one-and-a-half rolls going
straight up belly to the sun just over the Belle Plaine airstrip.
He began the maneuver Wednesday just as the sun touched the horizon
and left behind a heavy prairie twilight that seemed as palpable
as soup. Coming over the top of his last loop, Doc added two hundred rpm's
and four inches of manifold pressure as he headed down. At the
bottom of the loop, his airspeed hit 320 mph and he pulled back
hard on the stick and the elevators dug in. The G-meter indicated
six Gs as Sierra Sue II lugged straight up against gravity. At 5000 feet Doc neutralized the stick--centered it momentarily
to remove all back pressure so that Sierra Sue II would not
continue looping. A second later, he jerked the stick to the right.
The first corkscrew was immediate and the horizon whirled like a
top. It took only two seconds to complete the full roll, but Sierra
Sue II's rate of climb dropped suddenly from the drag of her
wings spinning against the climb. Now timing was critical. He
had only a second to complete the last half roll before she ran
out of climbing speed and stalled out. Suddenly she shuddered. Her nose tipped slightly back, and Doc
felt her beginning to hang. Still, he told himself, I've been here before. On the edge at
the top of a vertical roll. Close to falling onto my back instead
of nosing forward. Close to sliding into a dangerous power-on spin.
He was confident that he knew exactly where the edge was, and how
to stop short of it. Without completing the last half roll, he thrust the stick forward
to get her nose down. He jammed the right rudder to the floor,
to keep her from pivoting left. Neither counter-measure worked. Sierra Sue II dropped backwards
and then slid into an upright, flat spin. The powerful left torque
of her engine threw her nose around the axis of her cockpit as she
dropped five hundred feet a turn. Fifteen seconds later, still
holding right rudder and forward stick, he knew he was in an uncontrollable,
power-on spin. "Power-on spins are extremely dangerous," the wartime
manual for P-51 Mustang fighter pilots warned. "They must
never be performed under any circumstance." Who the hell would perform one? Doc had questioned when
he had first read the manual warning. You got into it by mistake.
Once into it, she spun and turned uncontrollably with her nose slightly
up, the spin tightening until she was just an engine whirling rapidly
around her own cockpit. The best chance for escape was to cut the
throttle and pray. After three more spins, Doc pulled back the power. She spun two
more times, lurching and shuddering as the wind whistled around
the spinning airframe. She stopped her left whirl suddenly and bucked to the right. Doc's
body jerked left, reflex English against the sudden change of direction.
He also slammed left rudder now, still holding the stick forward
to get her nose down. As suddenly as she had veered right, she whirled left again. "God-damnit!" Doc swore. "She's going down!" He had fallen almost 3000 feet in less than a minute. Despite
cutting the power, Sierra Sue II's nose remained up, the
spin tightened, and Doc felt as if he were being sucked into a vortex. At 2000 feet, he shouted, "Back to the basics!" He pulled the stick to neutral, pumped it forward twice, then held
it. At the same time he held hard right rudder. At 1500 feet, her nose lifted twenty degrees. Her spin slowed
and the whistle of wind died. She stopped rotating momentarily
and seemed to freeze in the sky. Doc tensed. What's she gonna do now? he thought. She snap-rolled left suddenly. Doc felt himself hanging in the
straps. A screwdriver and pliers cradled in the cockpit longeron
fell past his face and clattered in the dish of the upside-down
canopy. "If the normal recovery procedure doesn't take you out of
the spin," the Mustang manual's instructions for spin recovery
read, "let the controls go." It was recognition that
once a Mustang was deep into her spin, she was in command of herself
and recovery controls had no effect. "Fix in your mind the
altitude at which to bail out," the manual advised finally,
"and bail out before it is too late." It was good advice, except Doc never wore a chute. He rode out the snap-roll and braced himself. At 1200 feet, Sierra Sue II finished her abrupt roll with
her nose down forty-five degrees. A second later, Doc got his bearings
looking south toward the town of Belle Plaine. "She's flying!" he shouted. He eased the stick back gently to avoid diving into pasture.
He glanced at his airspeed--110 mph--and pushed the power up slowly.
She swooped up and he turned left gradually to avoid Belle Plaine.
He headed east down the river valley over familiar territory. He
shook violently from the adrenaline rush, and his heart fell into
what he recognized were supra-ventricular contractions--premature
heartbeats that thumped in his chest like a trip-hammer. Now I'm gonna have a heart attack! he thought. With his free hand he pounded himself on the chest twice. The
blows, he knew from his medical training, sent tiny electrical impulses
through his chest and depolarized the irregular rhythms. He landed on runway 27L, bouncing Sierra Sue II awkwardly.
He taxied, parked, put the chocks and stack plugs in place, then
walked shakily to his car. Driving away, Doc glanced back at Sierra Sue II. He had
had her painted with her exact combat markings: a flat silver with
her name in bright blue script just beneath her exhaust stacks;
farther back, the cowling portrait of a sultry brunette in a peasant
blouse, one bare shoulder cocked forward, seemed to be accusing
him of inept flying. He looked away quickly and drove home. That night he poured himself
a stiff vodka and sat staring into space in his leather fireplace
chair, trying to rebuild his confidence. "What the hell," he told himself, "I got out of
it." But that conclusion was contradicted by the sinking feeling that
he was a lucky son-of-a-bitch who had miraculously escaped an uncontrollable
spin. On his hospital rounds the next day, he stared at charts in a
half daze and kept seeing himself as a ghost who had died the day
before. By noon, his confidence was so shaken that he found himself
mentally rehearsing the simplest rules for piloting an airplane. How in hell can I go to Omaha and fly in an air show in front
of a huge crowd if I'm spooked? he questioned. At dusk he headed again for Flying Cloud Airport. Flying Cloud sits on the north bluff overlooking the Minnesota
River where it winds a course ten miles southwest of Minneapolis.
On the south side of the airport, at the edge of the bluff, the
Flying Cloud tower sticks up with green windows like fish tank glass.
A sign on the tower marks the elevation at 905 feet. Doc mounted Sierra Sue II by stepping first on the top
of the wheel with his good leg, then swinging the knee of his bad
left leg onto the wing. Once seated in the cockpit, he finished
his checklist quickly. "Mustang Five One Delta," he called the tower at 8:30
p.m. "I'm ready to taxi, departing southwest." Straight
for Belle Plaine, he was determined. And right into another vertical
roll. "Mustang One Seven Five One Delta," a woman's voice
recited carefully from the tower. A trainee controller, Doc realized,
breaking in on the busy but uncomplicated traffic at Flying Cloud.
"Taxi to 27L," she directed slowly. Doc taxied and held short of the runway until the trainee controller
cleared him for takeoff and a southwest turn toward Belle Plaine.
For a second night, the roar of Sierra Sue II's engine down
the runway brought out a gallery of grease monkeys, pilots and spectators. As soon as Sierra Sue II lifted off the runway, the familiar
feel of the stick and Doc's pilot instincts took over. "What the hell was I so spooked about?" he wondered
aloud. With his left hand, he pulled the handle to retract the gear.
Climbing gradually west, he glanced at the green gear lights on
the top of the instrument panel. They were both still on. Maybe only a light switch failure, Doc guessed. Recycle the gear,
he told himself. Put them back down, then up again. If it's a
bad connection in the light switch, the recycling procedure might
somehow correct it. He reached again for the red handle on the left side of the cockpit.
He pushed it forward and checked his flight path as he continued
climbing a mile west of Flying Cloud. When he glanced back at the green gear lights, only the right
one was on now. Still in his climb, he felt Sierra Sue II wobble and crab.
This was no light switch failure. Sierra Sue II's left gear
had stayed up and she was now a dangerous, one-legged bird. He immediately throttled back to 160 mph and banked thirty degrees
left over the river valley. He held the turn until he was headed
back toward the tower at 2000 feet. Passing just south of the tower,
right at the edge of the river bluffs, he called for confirmation
of his predicament. "Mustang Five One Delta. Check my gear." It was the trainee controller who answered. "Mustang One
Seven Five One Delta," she said carefully, "your nose
wheel is down. Your main gear are not down." "I don't have a nose gear!" Doc snapped. "Check
again." Thirty seconds later, after the tower put binoculars on Sierra
Sue II, a familiar Flying Cloud controller's voice came on.
"Correction. Your right gear is all the way down. Your left
gear is still up." Doc banked slowly right and advised the tower that he was heading
southwest back to the area over Belle Plaine and Jordan. The challenge
of confronting a vertical roll was forgotten. He'd have to put
Sierra Sue II through a series of violent, sudden maneuvers
in an effort to shake her gear loose. Failing that, the challenge
would be to crash land her. Along the way, he tried again to recycle the gear. This time
when he pulled on the red gear handle, it was stuck. A sure sign
of some linkage screwup, Doc felt. He remembered then that earlier in the week he had detected a
small hydraulic leak somewhere in the left wheel-well. In an effort
to pinpoint the spot of the leak, he had stuffed a small rag into
the well. Now he figured the rag had come loose, wrapped around
one of the gear rods, and jammed the linkage. In a few minutes he was at 2000 feet over the town of Jordan,
heading for Belle Plaine. He squared himself firmly in the cockpit
and began climbing. At 4000 feet, he put Sierra Sue II into
a steep, sixty degree dive. His air speed quickly shot to 220 mph.
At 2500 feet he pulled up sharply so that four Gs tugged down on
Sierra Sue II's airframe. At the same time he wiggled and
jerked the jammed gear handle and watched for the left green light
to come on. The light remained off. At 4000 feet again, he pushed the stick
forward and Sierra Sue II arched as if she were going over
the top loop of a roller-coaster ride. This time one-and-a-half
negative Gs made Doc float in his seat. But the sudden buoyancy
did not unload the gear. Short of Belle Plaine, Doc turned steeply back toward Jordan.
He dove a second time, then zoom-climbed and went over the top,
still hoping that the sudden combination of down-load and lift would
break the gear loose. The green light stayed off. Doc flew a third and fourth route between the two prairie towns,
diving and swooping up, jiggling the red handle of the gear lever. The handle remained stuck and the gear still refused to come down. On the fifth route, turning west back toward Belle Plaine, Doc
thought, I'm gonna move that handle. I don't give a shit if it
breaks off. He put Sierra Sue II in level flight, reached for the handle,
and gave it a series of rapid jerks. Then he pulled steadily at
it with a lunge that flushed his face and bent him in the cockpit. The handle broke free and Doc banged against the seat. He glanced at the instrument panel. The stubborn left green gear
light was still off. He noticed too that his hydraulic pressure
gauge dropped to 250 psi and then stayed there. It could only mean one thing. Tugging on the gear handle had
broken the linkage and snapped a hydraulic line somewhere. Meanwhile,
the left gear remained stuck in the wheel-well. He'd have to crab
Sierra Sue II in flight, angling the wheel-well into the
wind to lock the gear down. Doc applied full right rudder. Sierra Sue II responded
immediately and crabbed through the sky. She also began rolling
right, and Doc countered the roll with heavy left aileron. The
effect of the cocked attitude was to run the left gear almost sideways
into a rush of air. Sierra Sue II wobbled, buffeted and
whistled from the canted flight. The green light remained off. "C'mon!" Doc begged. He turned over Belle Plaine and headed back toward Jordan. This
time he increased his speed and hurtled Sierra Sue II through
the sky like a car broad-sliding on ice. The green light was still out. He turned again toward Belle Plaine. Now he alternated slamming
the rudder pedals so that Sierra Sue II yawed left, then
abruptly right into the wind. No green light. He checked his gas. Enough for fifteen more minutes. I'll keep trying, he told himself, until the gear breaks loose. But after four more runs, he vowed, "One more time!" One more time back toward Jordan failed. Another "one more time" and he checked his gas again.
Down to ten minutes. Five minutes to get back, he calculated, and
five extra if he had to circle Flying Cloud before landing. "One more run," he paraphrased the dark joke of Catch
22, "than the five more I've already done." Nothing. Sierra Sue II was still a one-legged bird. He turned a last time over Belle Plaine. I'm gonna have to decide
where to crash land, he thought. For a second he considered the
crude grass strip directly below at Belle Plaine. But there was
a ditch at the north end of the field, too short for Mustang comfort.
Besides, landing on a rough grass strip could bend the airframe
beyond repair. After having survived more than forty years of flight,
from perilous combat over Germany to his own hard combat maneuvering
in her at U.S. air shows, she'd be lost forever, destroyed in a
crash landing on a remote piece of Midwest prairie. She was too
historical for such an ignominious end. It had to be Flying Cloud, he decided. He headed back for the
familiar airport. Maybe she'll slide on the concrete, he hoped. Back to basics, he reminded himself again. The manual "basics" for a one-gear landing were simple: Roll the canopy back on final. Flaps down max to cut speed.
Keep the right wing on her gear side low. Touch down simultaneously
on her right gear and her tail wheel. Horse right aileron to keep
her left wing up as long as possible. Then let her down smoothly
onto her left wingtip. Stomp full right brakes and pray she slides. If Sierra Sue II didn't nose in or cartwheel, he could
save the airframe. Still, damage would be considerable: prop, $50,000,
he figured quickly; wingtip, $2000; spinner, $2000; belly scoop,
$20,000. And he'd wind up a no-show at Offutt. He pictured General
Urschler going through the briefing roll call, with half the warbirds
not there because they weren't O.R. or "Operation Ready,"
a euphemism for too dangerous to fly or already crashed. "Doc?" Urschler would call his name for the Mustang
flight. No answer. "Doc?" the general would look around. "Sierra
Sue II?" Still no answer. "No-show!" Urschler would pronounce and go on. Meanwhile,
a few of the pilots would wonder what the hell had happened to Doc.
Had he bought the farm? Sierra Sue II with him? Tough luck, they would say, and Doc imagined his own pithy eulogy:
Nobody ever flew a Mustang harder. So what happened? He throw a piston at Reno? Auger at Oshkosh? He crashed at Flying Cloud. Flying Cloud? Where the hell is Flying Cloud? The left green light came on just past Jordan. "She's down!" Doc shouted and pounded the canopy. His relief was short-lived. He noticed now that his hydraulic
gauge indicated only two hundred pounds of pressure, maybe not enough
to put the flaps down for a slow, flared landing that would keep
her from rolling off the end of the Flying Cloud runway. He reached for the flap handle and set it at the first of six
notches. Then he glanced at the flaps and watched them travel down
slowly from what little hydraulic pressure remained in the lines. Six miles out of Flying Cloud, he called into the tower. "Five
One Delta. I've done some fooling around out here. I think my
gear came down. I've got two green lights. I'm coming in. Give
me a check from the tower as soon as you can tell." He pictured the tower officials searching the horizon for him
with binoculars. It seemed forever before a voice broke the drone
of the Merlin engine: "Both gear appear down." Doc continued heading straight for the tower. "Better clear
out traffic," he told them. "I'm not sure where this
thing will go if the gear isn't locked." He didn't bother
to explain that he wasn't sure he could get the flaps down any farther
either. The tower directed a light Cherokee on final to go around. The
rest of the traffic was ordered to hold or clear out. Meanwhile,
Doc crossed the Minnesota River valley and put his flaps down another
notch, slowing Sierra Sue II slightly to 140 mph. He turned base leg over the river bluffs, and a sharp final over
the abandoned drive-in movie screen east of the field. One more flap notch slowed him to 110 mph as he swooped down for
27L. But the flaps would not travel to the fourth setting that
would have let him flare Sierra Sue II, and she hit the runway
hard and rolled fast. Small groups of observers watched Doc's landing from along the
line of hangars on the north side of Flying Cloud. A few had seen
him go off toward Belle Plaine with only one gear down. Others
had overheard him explain to the tower that he wasn't sure where
she would go on landing. They watched him land Sierra Sue II,
then slide back the canopy and lay both arms along the canopy sills
as she rolled. Either he was one of the coolest son-of-a-bitches
in aviation, somebody said, or nuts. Sierra Sue II stopped in the striped yellow warning zone
at the end of 27L. By the time he had taxied back to his tie-down
spot on the parking ramp, half a dozen witnesses to his predicament
had gathered. "We saw you go out with only your right gear," one of
them called as soon as he had shut her down. "My linkage jammed," Doc said and hauled himself out
of the cockpit. "I was sweating it." There was a huge
dark circle on the back of his shirt. "Sweating it! When you touched down, with that no-hands
landing shit, you looked like you were out for a Sunday drive." He didn't bother to explain that his landings weren't as casual
as they seemed. Last Updated
September 6, 2007
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