Aerotough Gf™ Landing Gear Door Hinge Bushings Set For Bonanza Aircraft

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Part# 05-11934
MFR Model# M1000


Main landing gear door hinge kits from Marsh Brothers Aviation for all models of Beech Bonanza and Debonair.

Avoid unnecessary and costly repairs by installing AeroTough™ GF polymer bushings. This preventative maintenance solution will ensure that you will never have the complications with seized bushings that traditional metal bushings can exhibit.

Lifetime lubricated AeroTough™ bushings prevent problems:
    Eliminate anxiety about damages to the supporting structure
    Never worry about lubricating tough-to-access places
    Zero risk of corrosion between sleeve and bushing
Be proactive: The cost to repair greatly exceeds the price of prevention. Don’t wait for disasters to occur. Make the change now!

Accessory Notes:
    Accessing the main landing gear door hinge brackets is difficult. The install kit is not essential but it is highly recommended because it make the installation of the main landing gear door hinge kits much easier. The install kit includes a 0.251” reamer to re-size the ID of the bushings in case they are tight, a press-out and press-in jack that can be used to push out the OEM bushings and press in the new polymer bushings, a push pin which is an adapter for the screw jack, some “Stick-it” for holding washers etc. in place during installation and a temporary distance piece to keep the housing flanges from bending.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


  • An essential part of your landing gear maintenance checklist is the need for periodic lubrication of hard-to-get-at door hinge bushings. Achieving proper lubrication is challenging because access is difficult. If these bushings are not lubricated regularly, corrosion will result. This can cause the bushing and sleeve to fuse together over time, resulting in problems with the door rigging and the operation of the aircraft. This could lead to an inoperable gear door or the cracking of the gear door - a safety issue for sure and at best, an expensive repair. Our kit is insurance against the possibility of future problems.
  • The solution to this problem is AeroTough™ GF polymer bushings. These non-metallic bushings can be easily installed and will provide smooth grease-free operation. AeroTough™ bushings will never require lubrication. The polymer material is designed to incorporate its own lubrication. If someone doesn’t know our bushings have been fitted and decides to squirt some lubrication into the hinges, it’s no problem. Our bushings are quite happy to run in oil or grease – it’s just not necessary!


  • Approved for installation in U.S. registered aircraft by Federal Aviation Administration Supplemental Type Certificate # SA03343NY.
  • Approved for installation in Canadian registered aircraft by Transport Canada Supplemental Type Certificate # SA13-39.
  • Reaming may be necessary, depending on any damage to the airframe (if damage is present, it is typically caused by corrosion of the OEM parts).
  • Corresponding Bonanza/Debonair OEM Part #: 105739X-ZP1050, 105740X-ZR0480, 105740X-ZJ0490.
  • List of approved Beech models: 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, 36, A36, A36TC, B36TC, E33, E33A, E33C, F33, F33A, F33C, G33, G36, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B.

Manufacturer Q & A


In The Box

  • 8 pre-packaged door hinge assemblies for direct replacement of OEM parts at each hinge location
  • Detailed installation instructions
  • Maintenance manual supplement
  • Copies of the US and Canadian Supplemental Type Certificates
  • An Authorized Release Certificate confirming regulatory compliance



Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Will one kit do the entire aircraft, ie. both right and left main gears?

Per the supplier: Yes the kit will do the entire aircraft, both right and left main gear doors.

Q: Will the kit 05-11934 do the complete aircraft and do I also need the 05-12241 install kit? What does that consist of?

P/N# 05-12241 is not required to install P/N# 05-11934. It is highly recommended because it comes with materials that will make installing the hinge kit much easier.