Not all aircraft inspections are created equal. Each aircraft is nuanced and unique and requires a specific skill set to ensure its safety and airworthiness. A Beechjet inspection is no different. When you’re choosing an MRO for your Beechjet inspection, it’s important that you choose a team that has experience working with your specific aircraft. They will understand the ins and outs of your aircraft and will be able to walk meticulously through the steps of a proper inspection. See below for the steps for a proper Beechjet inspection, and what you should be looking for when choosing an MRO for yours.
Your MRO Should Tackle These Critical Parts of a Beechjet Inspection
Step 1: Inspect problematic areas
Step 2: Make sure past maintenance has been done correctly
Step 3: Visually inspect the exterior of the aircraft
Step 4: If there are thrust reversers, check them next
Step 5: Check the engine bleed air bellows
Step 6: Check horizontal stabilizer tips and stabilizing leading edges
Step 7: Check main cabin doorsteps
Inspect Problem Areas and Past Maintenance
At Winner Aviation, we inspect areas that are prone to be problematic first. With our knowledge of the airframe, we inspect certain areas quickly to get a feel for past maintenance and to see if previous maintenance has been accomplished properly.
Visual Inspection of Aircraft Exterior
We then assess the outside of the aircraft and visually inspect the condition of the paint and antennas. A good visual inspection of the radome and bonding to the airframe is an easy check. Failed bonding of the radome has been known to induce static in the radios and cause other issues. Early detection and any necessary repairs should be started early in the process.
Assessment of Thrust Reversers
If your Beechjet is equipped with Thrust Reversers (TRs), they will need to be inspected early in the inspection process as well. Although the maintenance manual allows spray lubricant on several moving components for the thrust reversers, it does not do a good enough job of keeping things freed up. Removing all the hardware, cleaning, and inspecting for wear is a solid foundation to keeping your TRs operating flawlessly. Applying the proper/recommended Anti-Seize (paste form) will go a long way in keeping the Thrust Reversers operating. This will not only aid in the function of the TRs, but it will reduce costly repairs in the future.
Review of Engine Bleed Air Bellows
Once those areas are addressed, the next components to look at are the engine bleed air bellows. The Beechjet has been notorious for failed and leaking bellows. There is an FAA-designated A.D. note covering the bleed air ducting for the aircraft. The bellows assembly is prone to failed braiding and leaks. We not only look closely at the bellows in the aft compartment (Air Cycle Machine) but we also assess the engine ducting to include the engine bleed air manifolds and pylon areas. The parts are sometimes difficult to find. However, with enough notice, your parts may be eligible for repair and upgrade to the latest standard. The new ducting is a much better design and at this point, we have not seen any issues or recurring problems.
Visual Inspection of Stabilizer Tips and Leading Edges
With the proper equipment, a detailed visual inspection of the Horizontal Stabilizer Tips and operational checks of the Stabilizer Leading Edges are a must. The Leading Edges and Tips are electrically heated and require testing for proper operation. Due to the harsh environment that the tips operate in, they can become eroded and have exposed heating elements. Repairing these in accordance with the maintenance manual requirements is essential. A quick coat of black paint or Anti-Static cement is not a proper fix. Following the correct procedures for repairing the tips, although somewhat time-consuming, will not only reduce your downtime but your final repair costs as well.
Review of Main Cabin Doorsteps
A moving part that is often overlooked is the Main Cabin Doorsteps. Everyone can see how often they get used and abused. Pilots tend to throw them down in haste and take their operation for granted. The doorsteps and attaching hardware are subject to heavy loads and many operations. A simple check for tightness of all the attaching hardware will save a canceled trip and costly re-work of the actuating components. Verifying that all the hardware is tight and in place should be a daily visual check, and should be addressed immediately if any problems are found. Finding loose or worn hardware early will save costly dollars in the future.
What You Should Keep in Mind for Your Beechjet Inspection
In order to keep your aircraft operating properly, following the maintenance manual procedures for lubrication intervals and using the specified lubrication products will keep systems moving freely. The landing gear, flaps, and other components not only need to be lubricated but the old, dried, and dust and dirt-covered grease need to be cleared away before new grease is added. A quick wipe-off and an acid brush to clean between moving rod ends, actuators and rollers are necessary. Applying lubricant sparingly and properly aids not only operationally but is a benefit when doing pre-flight/post-flight inspections. No one wants to stick their hands in a big glob of grease to inspect for cotter pins or potential binding issues.
All maintenance facilities will have areas that they have found problematic and will address them as they see the need. Continuing with the required inspections and any incoming writeups will ensure a smooth and hassle-free inspection of your aircraft with minimum downtime and costly dollars saved. Good and frequent communication with all parties involved will aid in a quick and seamless Return to Service of your aircraft. That is what everyone is striving for because an aircraft is made to fly—not remain grounded.
For questions about your aircraft, or to schedule your Beechjet inspection, contact the expert maintenance team at Winner Aviation today.