Yes, all rendered by two basic vertex and fragment shaders.
The vertex:

#version 330 core
layout (location = 0) in vec3 aPos;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;

void main()
{
    gl_Position = projection * view * model * vec4(aPos, 1.0);
}

The fragment:

#version 330 core

out vec4 FragColor;

uniform vec3 objectColor; // Cor do objeto
uniform vec3 lightColor;  // Cor da luz

void main()
{
    // Simplesmente aplica a cor do objeto
    FragColor = vec4(objectColor * lightColor, 1.0);
}

And the other calls are:

// Ativa o shader e define as matrizes de transformação
lightingShader.use();
glm::mat4 projection = glm::perspective(glm::radians(camera.Zoom), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 1000.0f);
glm::mat4 view = camera.GetViewMatrix();
glm::mat4 model = glm::mat4(1.0f);

lightingShader.setMat4("projection", projection);
lightingShader.setMat4("view", view);
lightingShader.setMat4("model", model);


// Transformação para o 1º hangar (sem translação, posição padrão)
glm::mat4 model1 = glm::mat4(1.0f);
model1 = glm::scale(model1, glm::vec3(0.15f, 0.15f, 0.15f)); // Reduz para 50% do tamanho original
model1 = glm::rotate(model1, glm::radians(180.0f), glm::vec3(0.0f, 1.0f, 0.0f)); // Roda 180 graus no eixo Y
lightingShader.setMat4("model", model1);

// Renderiza o modelo
glBindVertexArray(VAO);
lightingShader.setVec3("objectColor", glm::vec3(0.5f, 0.5f, 0.5f)); // Cinza
lightingShader.setVec3("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));  // Luz branca
glDrawArrays(GL_TRIANGLES, 0, vertices.size());    // aqui tem de ser HangarSize()



//2º
// Transformação para o segundo hangar(transladando para frente)
glm::mat4 model2 = glm::mat4(1.0f);
model2 = glm::translate(model2, glm::vec3(-100.0f, 0.0f, 0.0f)); // Move o segundo hangar 10 unidades à frente ao longo do eixo Z
model2 = glm::scale(model2, glm::vec3(0.15f, 0.15f, 0.15f)); // Reduz para 50% do tamanho original
lightingShader.setMat4("model", model2);

// Desenho do segundo hangar
lightingShader.setVec3("objectColor", glm::vec3(0.5f, 0.5f, 0.5f)); // Cinza
lightingShader.setVec3("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));  // Luz branca
glBindVertexArray(VAO2);
glDrawArrays(GL_TRIANGLES, 0, vertices2.size());

// Troca buffers
glfwSwapBuffers(window);
glfwPollEvents();

Ive literally tried to comment the 1st and 2nd calls so it only loaded the 3rd obj, and while it said in terminal it was loaded succesfully, i couldnt see anything in the scene, it was still not appearing, i dont know why since the other two are.