One plane made a strange, hidden sound.
Knock. Knock. Knock.
So faint most people would never notice it.
Grace sat upright at once.
It reminded her instantly of an old generator her father had once fixed.
She could almost hear his voice.
“That knocking means the fuel is not burning correctly, Grace. Something is scratching inside. If you don’t fix it early, the whole engine will die.”
Grace stared up into the sky.
“That plane is sick,” she murmured.
The next day, desperate for food, she wandered near the airport fence. Workers were dumping bags of discarded airplane parts nearby.
Curiosity overcame hunger.
She slipped closer, reached into the pile, and pulled out a metal component.
A fuel injector.
She recognized it immediately.
Turning it in the sunlight, she noticed something that made her pulse jump.
Tiny scratches.
Marks that should not have been there.
Her father’s warning echoed in her mind:
Small problems cause big trouble. Never ignore the small things.
Grace wanted to tell someone. But who would listen to a homeless woman?
That same day, Richard Stone stood at the airport raging after yet another emergency landing.
Passengers were furious. Staff were terrified. His chief engineer looked defeated.
“You’re fired,” Richard told him. “Get out of my sight.”
Then, burning with frustration, Richard walked away from the crowd toward the back of the airport to clear his head.
That was when he saw Grace.
She was sitting by the fence, studying an airplane part as if it were treasure.
“Hey!” Richard barked. “What are you doing? This is private property!”
Grace jumped up and dropped the part.
“I’m sorry, sir! I was leaving.”
“Wait.”
He walked closer. Up close, he saw she was homeless—thin, dirty, exhausted—but her eyes were sharp.
“Why are you looking at airplane parts?” he asked.
She hesitated. “My father taught me engines, sir.”
Richard laughed bitterly.
“Engines? Do you know who I am?”
Grace shook her head.
“I’m Richard Stone. I own Skybridge Airlines. I have spent three billion naira hiring experts from America, Germany, and Japan to fix my engines. None of them can solve it. And now you’re telling me you know engines?”
A lesser person would have run.
Grace didn’t.
“Sir,” she said carefully, “may I ask what symptoms the planes have?”
Richard stared at her.
But something in her face made him answer.
“The engines shake. They knock. They lose power in the air. No one can tell me why.”
Grace’s eyes widened.
It matched exactly what she had heard the day before.
“Sir,” she said, voice trembling, “did anyone check the fuel injectors for internal scratches?”
Richard went still.
“What did you say?”
“The fuel injectors,” Grace repeated. “If they develop tiny scratches inside, the fuel sprays wrongly. It’s like watering a plant with a broken hose—the liquid goes everywhere except where it should. That causes poor combustion, knocking, and shaking.”
Richard stared at her.
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